Are segments so bad?

By: Gabriele Svelto (gabriele.svelto.delete@this.gmail.com), January 17, 2020 3:18 pm
Room: Moderated Discussions
Brendan (btrotter.delete@this.gmail.com) on January 17, 2020 12:51 pm wrote:
> My main argument is that overcommit needs to be phased out because it has resulted in "too
> much software is bad and doesn't handle allocation failures gracefully". I'd be proving
> myself wrong if I could show codebases gracefully handling all allocation failures.

And you provided exactly zero evidence to back this assertion.

> So you're saying that using signals to avoid and/or recover from "OOM killer" is so easy that
> you couldn't do it, so you resorted to restoring processes that were killed by OOM instead?

Actually we're doing that mainly on Windows.

> Great; now code that explicitly checks for allocation failures and ensures the error is reported
> in a manner consistent with the way other errors are reported is the same as pretending that
> allocations never fail and letting OOM killer worry about reporting the problem.

Yes, it is. It removes the error checking from everywhere else because that's impossible to handle in a sane way.

> I didn't look at every single crash report. I looked at about 12 of them. 11 of them
> looked extremely similar; and one looked very different (mostly because it failed to
> find most symbols in the backtrace so a large part of the bottom of the page was red)
> so I ignored it thinking it was a outlier (possibly misattributed to OOM).
>
> > A quick check would have
> > revealed that machines in the >90% bracket are made up mostly of users with 2-, 3- or 4GiB of RAM.
>
> Yes, and? The amount of "RAM+swap" that the OS is willing to commit to providing (which
> is the amount FireFox exceeds) does not depend on the amount of RAM alone. Of course
> with a large amount of "memory that kernel committed to providing that isn't actually
> allocated (yet)" the amount of free physical RAM is also relatively unimportant.

You were the one that brought up the system memory usage, not me. The amount of physical RAM is important because on Linux and macOS you OOM only when you've not only exhausted all your physical RAM but you're thrashing your swap file hard. On Windows you run into an OOM much earlier when free RAM is actually available.

That's a flaw Windows has and macOS/Linux don't.

> That's easy enough:
>
> a) your statistics don't include "OOM killer terminated a completely unrelated process", causing
> an unknown number of incidences of resource starvation on Linux and MacOS to be uncounted.

Yes it does. In fact I'm overestimating the Linux OOMs because you can get SIGBUS crashes for other reasons beside the OOM killer.

> b) FireFox is not designed purely for "no overcommit" (and is designed for portability,
> supporting systems with and without overcommit), and is therefore more likely to
> overcommit and less likely to avoid crashing when it does overcommit.

Until two years ago I didn't even know that Windows wouldn't overcommit. I discovered it because I started looking at why we were OOM'ing so often and the data looked odd because most of the crashes still had free memory. So no, we didn't give a damn about this, let alone "designed" Firefox around it.

> c) FireFox attempts to cache a large amount of "previously used" data in an attempt to improve
> performance, so the resource consumption is continually increasing over time until it reaches
> some kind of threshold; but whatever "some kind of threshold" is is likely extremely wrong
> for Windows.

No, we routinely purge caches and intermediate structures. We've got even a special purging event that runs once per day to ensure stale data on very long-running instances doesn't stay around.

> Mozilla's workaround is "Restart Firefox" ( https://support.mozilla.org/en-US/kb/firefox-uses-too-much-memory-or-cpu-resources#w_restart-firefox ).

It's funny that you attribute this to Firefox directly. All allocations in Firefox are in response to what a given page requests. If a site leaks, or holds onto too much data at once we can't do anything about it. Would you blame Java and .NET virtual machines for using too much memory too when running large programs?

> Software I write never continually increases its consumption until its hogging all memory the OS is willing
> to commit to, never needs anything like "timer based polling of resource consumption" (that's susceptible
> to rapid changes in resource consumption by other processes while my process is idle), relies purely on
> handling allocation failures when they occur (and never crashing when allocation failures occur), tries
> to minimize the amount it expects OS to commit to providing (never using fork, never using multiple processes
> when threads will do, never memory mapping files as "read/write", etc), and (in general) is designed with
> the assumption that the OS supports multi-tasking (and there may be many other processes running that are
> competing for the same resources, hopefully using the same resource management tactics I am).
>
> So, no, applications I write never need to go to those lengths to prevent OOMs.

But you claimed that we didn't go to these lengths, that we just had "screwed up new()", when instead we behave better than most other applications even WRT other processes in the system. We even de-prioritize background processes to ensure we play nicely with whatever is in the foreground.
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TopicPosted ByDate
Nuances related to Spinlock implementation and the Linux SchedulerBeastian2020/01/03 12:46 PM
  Nuances related to Spinlock implementation and the Linux SchedulerMontaray Jack2020/01/03 01:14 PM
    Nuances related to Spinlock implementation and the Linux SchedulerMontaray Jack2020/01/03 01:49 PM
  No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)Linus Torvalds2020/01/03 07:05 PM
    No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)Beastian2020/01/04 12:03 PM
    No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)Malte Skarupke2020/01/04 12:22 PM
      No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)Linus Torvalds2020/01/04 01:31 PM
        No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)dmcq2020/01/05 07:33 AM
        No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)smeuletz2020/01/06 02:05 AM
          Do not blame others for your unfinished jobsmeuletz2020/01/06 02:08 AM
            Where did all the experts come from? Did Linus get linked? (NT)anon2020/01/06 04:27 AM
              PhoronixGabriele Svelto2020/01/06 05:04 AM
                PhoronixSalvatore De Dominicis2020/01/06 07:59 AM
            Do not blame anyone. Please give polite, constructive criticismChester2020/01/06 09:17 AM
              Do not blame anyone. Please give polite, constructive criticismsmeuletz2020/01/06 10:11 AM
                Do not blame anyone. Please give polite, constructive criticismChester2020/01/06 10:54 AM
                  Do not blame anyone. Please give polite, constructive criticismsmeuletz2020/01/06 11:33 AM
                    Do not blame anyone. Please give polite, constructive criticismLinus Torvalds2020/01/06 12:58 PM
                      Do not blame anyone. Please give polite, constructive criticismGionatan Danti2020/01/06 01:13 PM
                        Do not blame anyone. Please give polite, constructive criticismLinus Torvalds2020/01/06 01:28 PM
                          Do not blame anyone. Please give polite, constructive criticismGionatan Danti2020/01/06 01:52 PM
                          Do not blame anyone. Please give polite, constructive criticismJohn Scott2020/01/10 08:48 AM
                          Do not blame anyone. Please give polite, constructive criticismsupernovas2020/01/10 10:01 AM
                            Do not blame anyone. Please give polite, constructive criticismLinus Torvalds2020/01/10 12:45 PM
                          Do not blame anyone. Please give polite, constructive criticismGDan2020/04/06 03:10 AM
                            OracleAnon32020/04/07 06:42 AM
                      Do not blame anyone. Please give polite, constructive criticismsmeuletz2020/01/07 04:07 AM
                        Do not blame anyone. Please give polite, constructive criticismSimon Farnsworth2020/01/07 01:40 PM
                        Do not blame anyone. Please give polite, constructive criticismEtienne2020/01/08 02:08 AM
                          Do not blame anyone. Please give polite, constructive criticismsmeuletz2020/01/08 02:18 AM
                            Do not blame anyone. Please give polite, constructive criticismMichael S2020/01/08 02:56 AM
                      Not deprecating irrelevant API: sched_yield() on quantum computers?smeuletz2020/01/07 04:34 AM
                      Do not blame anyone. Please give polite, constructive criticismmagicalgoat2020/01/09 05:58 PM
                        Do not blame anyone. Please give polite, constructive criticismLinus Torvalds2020/01/09 10:37 PM
                          Do not blame anyone. Please give polite, constructive criticismAnon32020/01/10 04:40 PM
                  Do not blame anyone. Please give polite, constructive criticismrwessel2020/01/06 10:04 PM
                Do not blame anyone. Please give polite, constructive criticismLinus Torvalds2020/01/06 12:11 PM
                  Do not blame anyone. Please give polite, constructive criticismGabriele Svelto2020/01/06 02:36 PM
        No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)Howard Chu2020/01/09 11:39 PM
          No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)Linus Torvalds2020/01/10 12:30 PM
      No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)president ltd2020/01/04 02:44 PM
    No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)Jörn Engel2020/01/04 12:34 PM
      No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)Emil Briggs2020/01/04 01:13 PM
        No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)Jörn Engel2020/01/04 01:46 PM
      No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)Linus Torvalds2020/01/04 02:24 PM
        No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)Linus Torvalds2020/01/04 03:54 PM
          No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)Jörn Engel2020/01/05 10:21 AM
            No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)Linus Torvalds2020/01/05 12:42 PM
              FUTEX_LOCK_PI performanceJörn Engel2020/01/05 02:45 PM
                FUTEX_LOCK_PI performanceLinus Torvalds2020/01/05 04:30 PM
                  FUTEX_LOCK_PI performanceJörn Engel2020/01/05 07:03 PM
                    FUTEX_LOCK_PI performanceRichardC2020/01/06 07:11 AM
                      FUTEX_LOCK_PI performanceLinus Torvalds2020/01/06 01:11 PM
                  FUTEX_LOCK_PI performanceGabriele Svelto2020/01/06 03:20 AM
                    FUTEX_LOCK_PI performancexilun2020/01/06 05:19 PM
                    FUTEX_LOCK_PI performanceKonrad Schwarz2020/01/13 04:36 AM
                      FUTEX_LOCK_PI performanceGabriele Svelto2020/01/13 04:53 AM
                      FUTEX_LOCK_PI performanceSimon Farnsworth2020/01/13 05:36 AM
                      FUTEX_LOCK_PI performancerwessel2020/01/13 06:22 AM
    No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)rainstar2020/01/04 10:58 PM
      No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)Charles Ellis2020/01/05 04:00 AM
        No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)Richard2020/01/05 09:58 AM
          It's hard to separateMichael S2020/01/05 11:17 AM
            It's hard to separaterainstared2020/01/06 01:52 AM
              It's hard to separateDavid Kanter2020/01/08 09:27 AM
                It's hard to separateAnon2020/01/08 09:37 PM
                  It's hard to separatenone2020/01/08 11:50 PM
                    It's hard to separateAnon2020/01/09 01:41 AM
                      It's hard to separatenone2020/01/09 03:54 AM
                        It's hard to separategallier22020/01/09 04:19 AM
                          It's hard to separateAnon2020/01/09 05:12 AM
                            It's hard to separateAdrian2020/01/09 05:24 AM
                              It's hard to separategallier22020/01/09 05:58 AM
                                It's hard to separateAdrian2020/01/09 07:09 AM
                            It's hard to separategallier22020/01/09 05:42 AM
                        It's hard to separateAdrian2020/01/09 04:41 AM
                        It's hard to separateAnon2020/01/09 05:24 AM
                          It's hard to separategallier22020/01/09 06:07 AM
                          It's hard to separateDavid Hess2020/01/09 09:27 AM
                            It's hard to separateAdrian2020/01/09 10:15 AM
                              It's hard to separateDavid Hess2020/01/09 10:45 AM
                                It's hard to separateAnon2020/01/09 11:15 AM
                                  It's hard to separateAdrian2020/01/09 11:51 AM
                                    It's hard to separateBrett2020/01/09 01:49 PM
                                      Zilog Z8000Brett2020/01/10 10:53 PM
                                        Zilog Z8000David Hess2020/01/11 07:06 AM
                                          Zilog Z8000Adrian2020/01/11 07:29 AM
                                            Zilog Z8000David Hess2020/01/11 08:45 AM
                                              Zilog Z8000Ricardo B2020/01/11 08:04 PM
                                                Zilog Z8000Ronald Maas2020/01/12 10:47 AM
                                                  Zilog Z8000Ricardo B2020/01/12 12:15 PM
                                                    Zilog Z8000Anon2020/01/12 11:34 PM
                                                      Zilog Z8000Jose2020/01/13 01:23 AM
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                                                            Zilog Z8000rwessel2020/01/13 10:40 PM
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                                                                Zilog Z8000Simon Farnsworth2020/01/14 03:56 AM
                                                                  Zilog Z8000Michael S2020/01/14 04:09 AM
                                                                    Zilog Z8000Simon Farnsworth2020/01/14 05:06 AM
                                                                      Zilog Z8000David Hess2020/01/14 10:22 AM
                                                                  Zilog Z8000David Hess2020/01/14 10:15 AM
                                                                Zilog Z8000rwessel2020/01/14 04:12 PM
                                                                  286 16 bit I/OTim McCaffrey2020/01/15 11:25 AM
                                                                    286 16 bit I/ODavid Hess2020/01/15 09:17 PM
                                                      Zilog Z8000Ricardo B2020/01/13 11:52 AM
                                                        Zilog Z8000Anon2020/01/13 12:25 PM
                                                          Zilog Z8000David Hess2020/01/13 06:38 PM
                                                            Zilog Z8000rwessel2020/01/13 07:16 PM
                                                              Zilog Z8000David Hess2020/01/13 07:47 PM
                                                          Zilog Z8000someone2020/01/14 07:54 AM
                                                            Zilog Z8000Anon2020/01/14 08:31 AM
                                                          Zilog Z8000Ricardo B2020/01/14 06:29 PM
                                                  Zilog Z8000Simon Farnsworth2020/01/15 03:26 AM
                                                    Zilog Z8000Tim McCaffrey2020/01/15 11:27 AM
                                                      Zilog Z8000Simon Farnsworth2020/01/15 02:32 PM
                                                    Zilog Z8000Ricardo B2020/01/15 03:47 PM
                                                      Zilog Z8000Anon2020/01/15 04:08 PM
                                                        Zilog Z8000Ricardo B2020/01/15 05:16 PM
                                                          Zilog Z8000Anon2020/01/15 05:31 PM
                                                            Zilog Z8000Ricardo B2020/01/15 06:46 PM
                                                              Zilog Z8000Anon2020/01/15 07:04 PM
                                                                Zilog Z8000David Hess2020/01/15 09:53 PM
                                                                Zilog Z8000Ricardo B2020/01/16 07:27 PM
                                                                  Zilog Z8000Anon2020/01/16 08:33 PM
                                                                    Zilog Z8000Ronald Maas2020/01/17 12:05 AM
                                                                      Zilog Z8000Anon2020/01/17 08:15 AM
                                                                    Zilog Z8000Ricardo B2020/01/17 02:59 PM
                                                                      Zilog Z8000Anon2020/01/17 07:40 PM
                                                                        Zilog Z8000Ricardo B2020/01/18 08:42 AM
                                                                          Zilog Z8000gallier22020/01/19 08:02 AM
                                                                    Zilog Z8000David Hess2020/01/18 07:12 AM
                                                            Zilog Z8000David Hess2020/01/15 09:49 PM
                                                          Zilog Z8000gallier22020/01/16 12:57 AM
                                                      Zilog Z8000Simon Farnsworth2020/01/16 02:30 AM
                                                        IBM PC successEtienne2020/01/16 06:42 AM
                                                        Zilog Z8000Ricardo B2020/01/16 07:32 PM
                                                          Zilog Z8000Brett2020/01/17 01:38 AM
                                                            Zilog Z8000David Hess2020/01/18 07:28 AM
                                                          Zilog Z8000David Hess2020/01/18 07:22 AM
                                                    Zilog Z8000David Hess2020/01/15 09:30 PM
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                                                Zilog Z8000Maxwell2020/01/11 10:08 AM
                                                  Zilog Z8000Ricardo B2020/01/11 08:42 PM
                                                    8086 does NOT have those addressing modesDevin2020/01/12 02:13 PM
                                                      8086 does NOT have those addressing modesRicardo B2020/01/12 06:46 PM
                                                        8086 does NOT have those addressing modesAnon2020/01/13 05:10 AM
                                                          8086 does NOT have those addressing modesgallier22020/01/13 06:07 AM
                                                            8086 does NOT have those addressing modesAnon2020/01/13 07:09 AM
                                                              8086 does NOT have those addressing modesRicardo B2020/01/13 11:48 AM
                                                          8086 does NOT have those addressing modesMichael S2020/01/13 07:40 AM
                                                            Zilog Z8000Ronald Maas2020/01/13 09:44 AM
                                                              Zilog Z8000Anon2020/01/13 04:32 PM
                                                          8086 does NOT have those addressing modesRicardo B2020/01/13 11:24 AM
                                                            8086 does NOT have those addressing modesrwessel2020/01/13 03:59 PM
                                                              8086 does NOT have those addressing modesDavid Hess2020/01/13 07:12 PM
                                                                8086 does NOT have those addressing modesrwessel2020/01/13 07:28 PM
                                                                  8086 does NOT have those addressing modesDavid Hess2020/01/13 07:51 PM
                                                          8086 does NOT have those addressing modesDavid Hess2020/01/13 06:55 PM
                                            Zilog Z8000rwessel2020/01/11 01:26 PM
                                              Zilog Z8000Brett2020/01/11 03:16 PM
                                                Zilog Z8000rwessel2020/01/11 08:20 PM
                                                  Zilog Z8000Brett2020/01/12 01:02 PM
                                                    Zilog Z8000rwessel2020/01/12 10:06 PM
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                                                    Zilog Z8000James2020/01/13 06:12 AM
                                              Zilog Z8000Adrian2020/01/12 12:38 AM
                                                PDP-11Michael S2020/01/12 02:33 AM
                                                Zilog Z8000rwessel2020/01/12 07:01 AM
                                              Zilog Z8000Ronald Maas2020/01/12 11:03 AM
                                            Zilog Z8000Konrad Schwarz2020/01/13 04:49 AM
                                              Zilog Z8000Adrian2020/01/14 12:38 AM
                                                Zilog Z8000konrad.schwarz2020/01/15 05:50 AM
                                                  Zilog Z8000Adrian2020/01/15 11:24 PM
                                    It's hard to separateDavid Hess2020/01/11 07:08 AM
                                  It's hard to separateDavid Hess2020/01/11 07:11 AM
                                It's hard to separateAdrian2020/01/09 12:16 PM
                                  It's hard to separateDavid Hess2020/01/11 07:17 AM
                                It's hard to separategallier22020/01/10 01:11 AM
                                  It's hard to separatenone2020/01/10 02:58 AM
                        It's hard to separaterwessel2020/01/09 08:00 AM
                        It's hard to separateDavid Hess2020/01/09 09:10 AM
                          It's hard to separaterwessel2020/01/09 09:51 AM
                  It's hard to separateAdrian2020/01/08 11:58 PM
                    It's hard to separaterwessel2020/01/09 07:31 AM
                      It's hard to separateAdrian2020/01/09 07:44 AM
                    It's hard to separateDavid Hess2020/01/09 09:37 AM
                      It's hard to separatenone2020/01/09 10:34 AM
                  Are segments so bad?Paul A. Clayton2020/01/09 03:15 PM
                    Yes, they are terrible (NT)Anon2020/01/09 03:20 PM
                    Are segments so bad?Adrian2020/01/10 12:49 AM
                      Are segments so bad?Etienne2020/01/10 02:28 AM
                        Are segments so bad?gallier22020/01/10 02:37 AM
                          Are segments so bad?Adrian2020/01/10 03:19 AM
                            Are segments so bad?Adrian2020/01/10 04:27 AM
                              Are segments so bad?Etienne2020/01/10 04:41 AM
                        Are segments so bad?Adrian2020/01/10 03:05 AM
                          Are segments so bad?gallier22020/01/10 03:13 AM
                      Are segments so bad?Anon32020/01/10 11:37 AM
                        Are segments so bad?Adrian2020/01/10 11:47 AM
                          Are segments so bad?Brendan2020/01/11 01:43 AM
                      Are segments so bad?Anon2020/01/10 06:51 PM
                        Are segments so bad?Adrian2020/01/11 01:05 AM
                          Are segments so bad?Jukka Larja2020/01/11 08:20 AM
                            Are segments so bad?Brendan2020/01/11 10:14 AM
                              Are segments so bad?Jukka Larja2020/01/11 09:15 PM
                                Are segments so bad?Brendan2020/01/11 11:15 PM
                                  Are segments so bad?Jukka Larja2020/01/12 04:18 AM
                                  Are segments so bad?anon2020/01/12 12:30 PM
                                    Are segments so bad?Brendan2020/01/12 10:19 PM
                                      the world sucks worse than you're aware ofMichael S2020/01/13 01:50 AM
                                        the world sucks worse than you're aware ofBrendan2020/01/13 03:56 AM
                                        the world sucks worse than you're aware ofGabriele Svelto2020/01/13 04:46 AM
                                      Are segments so bad?Jukka Larja2020/01/13 07:41 AM
                                        Are segments so bad?Brendan2020/01/13 08:21 AM
                                          Are segments so bad?Jukka Larja2020/01/13 09:43 AM
                                            Are segments so bad?Brendan2020/01/13 01:02 PM
                                              Are segments so bad?Anne O. Nymous2020/01/13 01:22 PM
                                                Are segments so bad?Brendan2020/01/13 02:50 PM
                                                  actor of around 200?Michael S2020/01/14 03:58 AM
                                                  Not overcomitting leads to more OOMs, not lessGabriele Svelto2020/01/14 12:50 PM
                                                    Not overcomitting leads to more OOMs, not lessBrendan2020/01/14 01:40 PM
                                                      Not overcomitting leads to more OOMs, not lessGabriele Svelto2020/01/15 03:17 AM
                                                        Not overcomitting leads to more OOMs, not lessAnon2020/01/15 04:43 AM
                                                          Not overcomitting leads to more OOMs, not lessGabriele Svelto2020/01/15 05:09 AM
                                                            Not overcomitting leads to more OOMs, not lessAnon2020/01/15 05:16 AM
                                                              Not overcomitting leads to more OOMs, not lessGabriele Svelto2020/01/15 06:58 AM
                                                                Not overcomitting leads to more OOMs, not lessAnon2020/01/15 09:08 AM
                                                                  Not overcomitting leads to more OOMs, not lessGabriele Svelto2020/01/16 04:05 AM
                                                        Not overcomitting leads to more OOMs, not lessMichael S2020/01/15 04:48 AM
                                                          Not overcomitting leads to more OOMs, not lessGabriele Svelto2020/01/15 05:10 AM
                                                            Not overcomitting leads to more OOMs, not lessMichael S2020/01/15 08:13 AM
                                                              Not overcomitting leads to more OOMs, not lessJukka Larja2020/01/15 08:46 AM
                                                        Not overcomitting leads to more OOMs, not lessJukka Larja2020/01/15 06:08 AM
                                                          Thanks for the info (NT)Gabriele Svelto2020/01/15 07:00 AM
                                                      Not overcomitting leads to more OOMs, not lessLinus Torvalds2020/01/15 12:30 PM
                                                        OOM killer complainsAnon2020/01/15 12:44 PM
                                                          OOM killer complainsanon2020/01/15 04:26 PM
                                                        Not overcomitting leads to more OOMs, not lessBrendan2020/01/16 07:26 AM
                                                          Not overcomitting leads to more OOMs, not lessLinus Torvalds2020/01/16 10:17 AM
                                                            Not overcomitting leads to more OOMs, not lessLinus Torvalds2020/01/16 10:48 AM
                                                              Not overcomitting leads to more OOMs, not lessDoug S2020/01/16 03:41 PM
                                                                Not overcomitting leads to more OOMs, not lessDoug S2020/01/16 03:44 PM
                                                Are segments so bad?rwessel2020/01/13 04:11 PM
                                              Are segments so bad?Jukka Larja2020/01/14 07:37 AM
                                                Are segments so bad?Brendan2020/01/14 08:48 AM
                                                  Are segments so bad?Jukka Larja2020/01/14 11:13 AM
                                                    Are segments so bad?Brendan2020/01/14 02:30 PM
                                                      Are segments so bad?Brett2020/01/14 10:13 PM
                                                      Are segments so bad?Jukka Larja2020/01/15 07:04 AM
                                                  Are segments so bad?Gabriele Svelto2020/01/15 03:35 AM
                                            Specifying cost of dropping pagesPaul A. Clayton2020/01/13 03:00 PM
                                              Specifying cost of dropping pagesrwessel2020/01/13 04:19 PM
                                                Specifying cost of dropping pagesGabriele Svelto2020/01/15 03:23 AM
                                          Are segments so bad?anon2020/01/14 02:15 AM
                                            Are segments so bad?Brendan2020/01/14 06:13 AM
                                          Are segments so bad?Gabriele Svelto2020/01/14 12:57 PM
                                            Are segments so bad?Brendan2020/01/14 02:58 PM
                                              Are segments so bad?Gabriele Svelto2020/01/15 03:33 AM
                                                Are segments so bad?Anon2020/01/15 05:24 AM
                                                  Are segments so bad?Jukka Larja2020/01/15 06:20 AM
                                                Are segments so bad?Etienne2020/01/15 05:56 AM
                                                  Are segments so bad?Jukka Larja2020/01/15 08:53 AM
                                                    Are segments so bad?Gabriele Svelto2020/01/16 06:12 AM
                                                      Are segments so bad?Jukka Larja2020/01/16 10:56 AM
                                                Are segments so bad?Brendan2020/01/15 06:20 AM
                                                  Are segments so bad?Gabriele Svelto2020/01/15 06:56 AM
                                                    Are segments so bad?Brendan2020/01/16 07:16 AM
                                                      Are segments so bad?Jukka Larja2020/01/16 11:08 AM
                                                        Are segments so bad?Brendan2020/01/17 01:52 PM
                                                          Are segments so bad?Jukka Larja2020/01/17 10:08 PM
                                                            Are segments so bad?Brendan2020/01/18 12:40 PM
                                                              Are segments so bad?Jukka Larja2020/01/18 10:13 PM
                                                                Are segments so bad?Brendan2020/01/19 12:25 PM
                                                                  Are segments so bad?Brett2020/01/19 03:18 PM
                                                                    Are segments so bad?Brett2020/01/19 03:34 PM
                                                                  Are segments so bad?Gabriele Svelto2020/01/20 12:57 AM
                                                                  Are segments so bad?Jukka Larja2020/01/20 05:54 AM
                                                                    Are segments so bad?Brendan2020/01/20 12:43 PM
                                                                      Are segments so bad?Jukka Larja2020/01/21 07:01 AM
                                                                        Are segments so bad?Brendan2020/01/21 06:04 PM
                                                                          Are segments so bad?Jukka Larja2020/01/22 07:30 AM
                                                                            Are segments so bad?Brendan2020/01/22 03:56 PM
                                                                              Are segments so bad?Jukka Larja2020/01/23 08:44 AM
                                                      Are segments so bad?rwessel2020/01/16 03:06 PM
                                                      Are segments so bad?Gabriele Svelto2020/01/16 03:13 PM
                                                        Are segments so bad?Brendan2020/01/17 01:51 PM
                                                          Are segments so bad?Gabriele Svelto2020/01/17 03:18 PM
                                                            Are segments so bad?Anon2020/01/17 08:01 PM
                                                              Are segments so bad?Gabriele Svelto2020/01/20 01:06 AM
                                                            Are segments so bad?Brendan2020/01/18 03:15 PM
                                                              Are segments so bad?Gabriele Svelto2020/01/20 12:55 AM
                                                                Are segments so bad?Michael S2020/01/20 05:30 AM
                                                                  Are segments so bad?Gabriele Svelto2020/01/20 08:02 AM
                                                                    Are segments so bad?Jukka Larja2020/01/20 08:41 AM
                                                                    Are segments so bad?Michael S2020/01/20 08:45 AM
                                                                      Are segments so bad?Gabriele Svelto2020/01/20 09:36 AM
                                                                Are segments so bad?Brendan2020/01/20 11:04 AM
                                                                  Are segments so bad?Michael S2020/01/20 01:22 PM
                                                                    Are segments so bad?Brendan2020/01/20 02:38 PM
                                                                      Are segments so bad?Simon Farnsworth2020/01/20 03:40 PM
                                                                        Are segments so bad?Anon2020/01/20 04:35 PM
                                                                          Are segments so bad?Simon Farnsworth2020/01/20 05:30 PM
                                                                      Are segments so bad?Michael S2020/01/20 05:20 PM
                                                                  Are segments so bad?Gabriele Svelto2020/01/21 05:08 AM
                                                                    Are segments so bad?Brendan2020/01/21 06:07 PM
                                                                      Are segments so bad?Gabriele Svelto2020/01/22 01:53 AM
                                                                        Are segments so bad?Brendan2020/01/22 04:32 AM
                                                                          Are segments so bad?Jukka Larja2020/01/22 07:12 AM
                                                                            Are segments so bad?Brendan2020/01/22 04:28 PM
                                                                              Are segments so bad?Jukka Larja2020/01/23 07:36 AM
                                                                                Are segments so bad?Brendan2020/01/24 07:27 PM
                                                                                  Are segments so bad?Jukka Larja2020/01/24 10:42 PM
                                                                                    Are segments so bad?Brendan2020/01/25 02:46 AM
                                                                                      Are segments so bad?Jukka Larja2020/01/25 08:29 AM
                                                                                        Are segments so bad?Brendan2020/01/26 11:17 PM
                                                                                          Are segments so bad?Jukka Larja2020/01/27 07:55 AM
                                                                                            Are segments so bad?Gabriele Svelto2020/01/27 04:33 PM
                                                                                              Are segments so bad?Jukka Larja2020/01/28 06:28 AM
                                                                                                DDS assets and MipMap chainsMontaray Jack2020/01/29 03:26 AM
                                                                                      Are segments so bad?gallier22020/01/27 03:58 AM
                                                                                        Are segments so bad?Jukka Larja2020/01/27 06:19 AM
                                                                                  Are segments so bad?Anne O. Nymous2020/01/25 03:23 AM
                                                                            Are segments so bad?Anon2020/01/22 05:52 PM
                                                                              Are segments so bad?Anne O. Nymous2020/01/23 01:24 AM
                                                                                Are segments so bad?Anon2020/01/23 05:24 PM
                                                                                  Are segments so bad?Anne O. Nymous2020/01/24 12:43 AM
                                                                                    Are segments so bad?Anon2020/01/24 04:04 AM
                                                                                      Are segments so bad?Etienne2020/01/24 06:10 AM
                                                                              Are segments so bad?Gabriele Svelto2020/01/23 01:48 AM
                                                                                Are segments so bad?Michael S2020/01/23 03:48 AM
                                                                                Are segments so bad?Jukka Larja2020/01/23 07:38 AM
                                                                                  Are segments so bad?Gabriele Svelto2020/01/23 01:29 PM
                                                                                    Are segments so bad?Anon2020/01/23 06:08 PM
                                                                                      Are segments so bad?Jukka Larja2020/01/24 09:51 PM
                                                                                Are segments so bad?Anon2020/01/23 06:02 PM
                                                                                  Are segments so bad?Gabriele Svelto2020/01/24 03:57 AM
                                                                                    Are segments so bad?Anon2020/01/24 04:17 AM
                                                                                      Are segments so bad?Gabriele Svelto2020/01/24 09:23 AM
                                                                                        Are segments so bad?Anon2020/02/02 10:15 PM
                                                                                          Are segments so bad?Gabriele Svelto2020/02/03 01:47 AM
                                                                                            Are segments so bad?Anon2020/02/03 02:34 AM
                                                                                              Are segments so bad?Gabriele Svelto2020/02/03 05:36 AM
                                                                                                Are segments so bad?Anon32020/02/03 08:47 AM
                                                                                                Are segments so bad?Anon2020/02/04 05:49 PM
                                                                                  Are segments so bad?Jukka Larja2020/01/24 10:10 PM
                                                          Are segments so bad?Jukka Larja2020/01/17 10:26 PM
                                Are segments so bad?Anne O. Nymous2020/01/12 04:18 AM
                                  Are segments so bad?Jukka Larja2020/01/12 08:41 AM
                            Are segments so bad?rwessel2020/01/11 01:31 PM
                          Are segments so bad?Anne O. Nymous2020/01/11 08:22 AM
                      Are segments so bad?Ricardo B2020/01/11 08:01 PM
                        Are segments so bad?Adrian2020/01/12 12:18 AM
                          Are segments so bad?Michael S2020/01/12 02:43 AM
                            Are segments so bad?Adrian2020/01/12 04:35 AM
                          Are segments so bad?Ricardo B2020/01/12 12:04 PM
                            Are segments so bad?Anon32020/01/12 05:52 PM
                            Are segments so bad?Brendan2020/01/12 09:58 PM
                      Are segments so bad?Paul A. Clayton2020/01/13 09:11 AM
        No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)rainstared2020/01/06 01:43 AM
          No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)Foo_2020/01/06 05:33 AM
            No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)dmcq2020/01/06 06:03 AM
            changes in contextCarlie Coats2020/01/09 09:06 AM
      No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)rainstar2020/01/09 10:16 PM
        No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)Montaray Jack2020/01/09 11:11 PM
    Suggested reading for the authoranon2020/01/04 11:16 PM
      Suggested reading for the authorab2020/01/05 05:15 AM
        Looking at the other side (frequency scaling)Chester2020/01/06 10:19 AM
          Looking at the other side (frequency scaling)Foo_2020/01/06 11:00 AM
          Why spinlocks were usedFoo_2020/01/06 11:06 AM
            Why spinlocks were usedJukka Larja2020/01/06 12:59 PM
            Why spinlocks were usedSimon Cooke2020/01/06 03:16 PM
            Why spinlocks were usedRizzo2020/01/07 01:18 AM
          Looking at the other side (frequency scaling)ab2020/01/07 01:14 AM
    Cross-platform codeGian-Carlo Pascutto2020/01/06 08:00 AM
      Cross-platform codeMichael S2020/01/06 09:11 AM
        Cross-platform codeGian-Carlo Pascutto2020/01/06 12:33 PM
          Cross-platform codeMichael S2020/01/06 01:59 PM
            Cross-platform codeNksingh2020/01/07 12:09 AM
              Cross-platform codeMichael S2020/01/07 02:00 AM
              SRW lock implementationMichael S2020/01/07 02:35 AM
                SRW lock implementationNksingh2020/01/09 02:17 PM
                  broken URL in Linux source codeMichael S2020/01/14 01:56 AM
                    broken URL in Linux source codeTravis Downs2020/01/14 10:14 AM
                      broken URL in Linux source codeMichael S2020/01/14 10:48 AM
                        broken URL in Linux source codeTravis Downs2020/01/14 04:43 PM
                  SRW lock implementation - url brokenMichael S2020/01/14 03:07 AM
                    SRW lock implementation - url brokenTravis Downs2020/01/14 11:06 AM
                      SRW lock implementation - url brokengpderetta2020/01/15 04:28 AM
                        SRW lock implementation - url brokenTravis Downs2020/01/15 11:16 AM
                      SRW lock implementation - url brokenLinus Torvalds2020/01/15 11:20 AM
                        SRW lock implementation - url brokenTravis Downs2020/01/15 11:35 AM
                          SRW lock implementation - url brokenLinus Torvalds2020/01/16 11:24 AM
                    SRW lock implementation - url brokenKonrad Schwarz2020/02/05 10:19 AM
                    SRW lock implementation - url brokennksingh2020/02/05 02:42 PM
      Cross-platform codeLinus Torvalds2020/01/06 01:57 PM
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