Are segments so bad?

By: Jukka Larja (roskakori2006.delete@this.gmail.com), January 15, 2020 6:04 am
Room: Moderated Discussions
Brendan (btrotter.delete@this.gmail.com) on January 14, 2020 1:30 pm wrote:
> Jukka Larja (roskakori2006.delete@this.gmail.com) on January 14, 2020 10:13 am wrote:
>
> > Not untestable, but in practice hardly ever tested, because OOMs practically never happen.
> >
> > Every game console requires us to handle out of disk space
> > (and other user data write errors) in some sensible
> > way.
>
> If someone ignored the error during write then (later) crashed while trying to load
> data that wasn't correctly written, would you assume the software is stupid? Why is
> it stupid for one resource (disk) and "normal" for another resource (memory)?

Handling doesn't mean just not crashing. It means showing particular errors based on rules that depend on what exactly the error was and what is the error state of the system (e.g. should multiple errors about the same thing be shown individually or just as a single popup). There are also rules about which errors may be reported to user, which errors must be reported using API functions only and so on.

There are no such rules about OOM, of course, because the basic rule "never crash" takes care of that. My point is mostly that compared to trying to handle OOM, handling the save data access errors is trivial, yet it's still a huge thing compared to actual save-data-access-in-errorless-case.

To answer the question, handling OOM is stupid, because it is so much easier to avoid it. That's software and system dependent of course, so if in your particular case it is easy to handle and OOMs happen all the time, then it isn't stupid.

In some system it may be easier (like a game console, where amount of available memory is always the same) than on others (normal PC, where amount of memory varies, and amount of available memory varies even more, in real time). And in some software being able to hold some huge cache when there's a lot of available memory may be such an advantage that it makes sense to try to live as close to OOM as possible.

Every single one of the apps with such caches I've seen (various audio software suites, CD burning software, both in-house and third party build tools), have managed them badly, usually just allowing to set the minimum and maximum. Basically leaving it to user. And frankly, I don't think I could come up with any idea how to do better. By the time things slide to OOM it's far too late to back out.

> > Even with ready made tools to simulate the problem, it's still a bitch to test, because it's very
> > much out of the normal execution path. It never gets tested, except when someone spends time to do just
> > that. Devkits never run out of disk space in any normal use. In practice, it's easier to get saving the
> > data right than it is to handle the case when saving fails. Not because it's actually more complicated,
> > but because the non-problematic saving gets tested couple of orders of magnitude more often.
>
> Seems like it'd be trivial to pretend a write returned an error when it didn't.

Just looking at the specs that would be my first thought too. My practical experience says otherwise.

The problem is that on no platform you can actually write anything to disk in main thread (On PS4, for example, mounting and unmounting save data takes about 200 ms each and you can only hold it mounted for about five seconds. It doesn't really matter, since HDD seek time would be too long in any case). So you setup the access and go on and then on some random moment the thread doing the access will tell you that it went wrong, and you have to somehow handle it. And you have no idea in what state the whole program actually is.

So you come up with something, preverrably trivial to avoid any problems, test it with some trivial "every access fails" test, commit it and let QA know that save data errors should now be handled. So far on every platform QA has come up with something that broke the trivial system. Often this involved incredibly accurate timing (going to that menu, loading a level, then quitting about two seconds later etc.), or some other special circumstances (e.g. all save slots and their backups filled).

In modern game engines, common problems have annoying habit of turning to threading and timing problems.

> The problem is that allowing overcommit prevents all software from handling OOM, not just software that
> doesn't handle OOM. You are saying "I don't handle OOM, therefore nobody should be allowed to handle OOM".

Most of those special apps could probably code around that just by touching all the memory they allocate.

> Note: If someone calls "mmap()" and doesn't bother to check if it returned -1, then I do consider them
> incompetent. At a minimum I'd expect some kind of "fprintf(stderr, "Failed to mmap, reason: %sn", strerror(errno)
> );" where OOM is at least treated the same as any other error condition and not ignored.

I mostly agree on that, though in case of memory allocations, we have our own memory manager which will report the error, then return null. It's pointless to check the return value, since error has already been reported and if we were trying to handle the OOM, we'd do it in the memory manager.

For pretty much any use of any third party API, I feel allowed to yell at anyone who doesn't check the return values though. But that's just because you don't know what sort of error, if any, will be reported. It doesn't necessarily even mean that we try to avoid crashing.

-JLarja
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TopicPosted ByDate
Nuances related to Spinlock implementation and the Linux SchedulerBeastian2020/01/03 11:46 AM
  Nuances related to Spinlock implementation and the Linux SchedulerMontaray Jack2020/01/03 12:14 PM
    Nuances related to Spinlock implementation and the Linux SchedulerMontaray Jack2020/01/03 12:49 PM
  No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)Linus Torvalds2020/01/03 06:05 PM
    No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)Beastian2020/01/04 11:03 AM
    No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)Malte Skarupke2020/01/04 11:22 AM
      No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)Linus Torvalds2020/01/04 12:31 PM
        No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)dmcq2020/01/05 06:33 AM
        No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)smeuletz2020/01/06 01:05 AM
          Do not blame others for your unfinished jobsmeuletz2020/01/06 01:08 AM
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              PhoronixGabriele Svelto2020/01/06 04:04 AM
                PhoronixSalvatore De Dominicis2020/01/06 06:59 AM
            Do not blame anyone. Please give polite, constructive criticismChester2020/01/06 08:17 AM
              Do not blame anyone. Please give polite, constructive criticismsmeuletz2020/01/06 09:11 AM
                Do not blame anyone. Please give polite, constructive criticismChester2020/01/06 09:54 AM
                  Do not blame anyone. Please give polite, constructive criticismsmeuletz2020/01/06 10:33 AM
                    Do not blame anyone. Please give polite, constructive criticismLinus Torvalds2020/01/06 11:58 AM
                      Do not blame anyone. Please give polite, constructive criticismGionatan Danti2020/01/06 12:13 PM
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                          Do not blame anyone. Please give polite, constructive criticismsupernovas2020/01/10 09:01 AM
                            Do not blame anyone. Please give polite, constructive criticismLinus Torvalds2020/01/10 11:45 AM
                      Do not blame anyone. Please give polite, constructive criticismsmeuletz2020/01/07 03:07 AM
                        Do not blame anyone. Please give polite, constructive criticismSimon Farnsworth2020/01/07 12:40 PM
                        Do not blame anyone. Please give polite, constructive criticismEtienne2020/01/08 01:08 AM
                          Do not blame anyone. Please give polite, constructive criticismsmeuletz2020/01/08 01:18 AM
                            Do not blame anyone. Please give polite, constructive criticismMichael S2020/01/08 01:56 AM
                      Not deprecating irrelevant API: sched_yield() on quantum computers?smeuletz2020/01/07 03:34 AM
                      Do not blame anyone. Please give polite, constructive criticismmagicalgoat2020/01/09 04:58 PM
                        Do not blame anyone. Please give polite, constructive criticismLinus Torvalds2020/01/09 09:37 PM
                          Do not blame anyone. Please give polite, constructive criticismAnon32020/01/10 03:40 PM
                  Do not blame anyone. Please give polite, constructive criticismrwessel2020/01/06 09:04 PM
                Do not blame anyone. Please give polite, constructive criticismLinus Torvalds2020/01/06 11:11 AM
                  Do not blame anyone. Please give polite, constructive criticismGabriele Svelto2020/01/06 01:36 PM
        No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)Howard Chu2020/01/09 10:39 PM
          No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)Linus Torvalds2020/01/10 11:30 AM
      No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)president ltd2020/01/04 01:44 PM
    No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)Jörn Engel2020/01/04 11:34 AM
      No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)Emil Briggs2020/01/04 12:13 PM
        No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)Jörn Engel2020/01/04 12:46 PM
      No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)Linus Torvalds2020/01/04 01:24 PM
        No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)Linus Torvalds2020/01/04 02:54 PM
          No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)Jörn Engel2020/01/05 09:21 AM
            No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)Linus Torvalds2020/01/05 11:42 AM
              FUTEX_LOCK_PI performanceJörn Engel2020/01/05 01:45 PM
                FUTEX_LOCK_PI performanceLinus Torvalds2020/01/05 03:30 PM
                  FUTEX_LOCK_PI performanceJörn Engel2020/01/05 06:03 PM
                    FUTEX_LOCK_PI performanceRichardC2020/01/06 06:11 AM
                      FUTEX_LOCK_PI performanceLinus Torvalds2020/01/06 12:11 PM
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                      FUTEX_LOCK_PI performanceGabriele Svelto2020/01/13 03:53 AM
                      FUTEX_LOCK_PI performanceSimon Farnsworth2020/01/13 04:36 AM
                      FUTEX_LOCK_PI performancerwessel2020/01/13 05:22 AM
    No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)rainstar2020/01/04 09:58 PM
      No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)Charles Ellis2020/01/05 03:00 AM
        No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)Richard2020/01/05 08:58 AM
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                  Are segments so bad?Paul A. Clayton2020/01/09 02:15 PM
                    Yes, they are terrible (NT)Anon2020/01/09 02:20 PM
                    Are segments so bad?Adrian2020/01/09 11:49 PM
                      Are segments so bad?Etienne2020/01/10 01:28 AM
                        Are segments so bad?gallier22020/01/10 01:37 AM
                          Are segments so bad?Adrian2020/01/10 02:19 AM
                            Are segments so bad?Adrian2020/01/10 03:27 AM
                              Are segments so bad?Etienne2020/01/10 03:41 AM
                        Are segments so bad?Adrian2020/01/10 02:05 AM
                          Are segments so bad?gallier22020/01/10 02:13 AM
                      Are segments so bad?Anon32020/01/10 10:37 AM
                        Are segments so bad?Adrian2020/01/10 10:47 AM
                          Are segments so bad?Brendan2020/01/11 12:43 AM
                      Are segments so bad?Anon2020/01/10 05:51 PM
                        Are segments so bad?Adrian2020/01/11 12:05 AM
                          Are segments so bad?Jukka Larja2020/01/11 07:20 AM
                            Are segments so bad?Brendan2020/01/11 09:14 AM
                              Are segments so bad?Jukka Larja2020/01/11 08:15 PM
                                Are segments so bad?Brendan2020/01/11 10:15 PM
                                  Are segments so bad?Jukka Larja2020/01/12 03:18 AM
                                  Are segments so bad?anon2020/01/12 11:30 AM
                                    Are segments so bad?Brendan2020/01/12 09:19 PM
                                      the world sucks worse than you're aware ofMichael S2020/01/13 12:50 AM
                                        the world sucks worse than you're aware ofBrendan2020/01/13 02:56 AM
                                        the world sucks worse than you're aware ofGabriele Svelto2020/01/13 03:46 AM
                                      Are segments so bad?Jukka Larja2020/01/13 06:41 AM
                                        Are segments so bad?Brendan2020/01/13 07:21 AM
                                          Are segments so bad?Jukka Larja2020/01/13 08:43 AM
                                            Are segments so bad?Brendan2020/01/13 12:02 PM
                                              Are segments so bad?Anne O. Nymous2020/01/13 12:22 PM
                                                Are segments so bad?Brendan2020/01/13 01:50 PM
                                                  actor of around 200?Michael S2020/01/14 02:58 AM
                                                  Not overcomitting leads to more OOMs, not lessGabriele Svelto2020/01/14 11:50 AM
                                                    Not overcomitting leads to more OOMs, not lessBrendan2020/01/14 12:40 PM
                                                      Not overcomitting leads to more OOMs, not lessGabriele Svelto2020/01/15 02:17 AM
                                                        Not overcomitting leads to more OOMs, not lessAnon2020/01/15 03:43 AM
                                                          Not overcomitting leads to more OOMs, not lessGabriele Svelto2020/01/15 04:09 AM
                                                            Not overcomitting leads to more OOMs, not lessAnon2020/01/15 04:16 AM
                                                              Not overcomitting leads to more OOMs, not lessGabriele Svelto2020/01/15 05:58 AM
                                                                Not overcomitting leads to more OOMs, not lessAnon2020/01/15 08:08 AM
                                                                  Not overcomitting leads to more OOMs, not lessGabriele Svelto2020/01/16 03:05 AM
                                                        Not overcomitting leads to more OOMs, not lessMichael S2020/01/15 03:48 AM
                                                          Not overcomitting leads to more OOMs, not lessGabriele Svelto2020/01/15 04:10 AM
                                                            Not overcomitting leads to more OOMs, not lessMichael S2020/01/15 07:13 AM
                                                              Not overcomitting leads to more OOMs, not lessJukka Larja2020/01/15 07:46 AM
                                                        Not overcomitting leads to more OOMs, not lessJukka Larja2020/01/15 05:08 AM
                                                          Thanks for the info (NT)Gabriele Svelto2020/01/15 06:00 AM
                                                      Not overcomitting leads to more OOMs, not lessLinus Torvalds2020/01/15 11:30 AM
                                                        OOM killer complainsAnon2020/01/15 11:44 AM
                                                          OOM killer complainsanon2020/01/15 03:26 PM
                                                        Not overcomitting leads to more OOMs, not lessBrendan2020/01/16 06:26 AM
                                                          Not overcomitting leads to more OOMs, not lessLinus Torvalds2020/01/16 09:17 AM
                                                            Not overcomitting leads to more OOMs, not lessLinus Torvalds2020/01/16 09:48 AM
                                                              Not overcomitting leads to more OOMs, not lessDoug S2020/01/16 02:41 PM
                                                                Not overcomitting leads to more OOMs, not lessDoug S2020/01/16 02:44 PM
                                                Are segments so bad?rwessel2020/01/13 03:11 PM
                                              Are segments so bad?Jukka Larja2020/01/14 06:37 AM
                                                Are segments so bad?Brendan2020/01/14 07:48 AM
                                                  Are segments so bad?Jukka Larja2020/01/14 10:13 AM
                                                    Are segments so bad?Brendan2020/01/14 01:30 PM
                                                      Are segments so bad?Brett2020/01/14 09:13 PM
                                                      Are segments so bad?Jukka Larja2020/01/15 06:04 AM
                                                  Are segments so bad?Gabriele Svelto2020/01/15 02:35 AM
                                            Specifying cost of dropping pagesPaul A. Clayton2020/01/13 02:00 PM
                                              Specifying cost of dropping pagesrwessel2020/01/13 03:19 PM
                                                Specifying cost of dropping pagesGabriele Svelto2020/01/15 02:23 AM
                                          Are segments so bad?anon2020/01/14 01:15 AM
                                            Are segments so bad?Brendan2020/01/14 05:13 AM
                                          Are segments so bad?Gabriele Svelto2020/01/14 11:57 AM
                                            Are segments so bad?Brendan2020/01/14 01:58 PM
                                              Are segments so bad?Gabriele Svelto2020/01/15 02:33 AM
                                                Are segments so bad?Anon2020/01/15 04:24 AM
                                                  Are segments so bad?Jukka Larja2020/01/15 05:20 AM
                                                Are segments so bad?Etienne2020/01/15 04:56 AM
                                                  Are segments so bad?Jukka Larja2020/01/15 07:53 AM
                                                    Are segments so bad?Gabriele Svelto2020/01/16 05:12 AM
                                                      Are segments so bad?Jukka Larja2020/01/16 09:56 AM
                                                Are segments so bad?Brendan2020/01/15 05:20 AM
                                                  Are segments so bad?Gabriele Svelto2020/01/15 05:56 AM
                                                    Are segments so bad?Brendan2020/01/16 06:16 AM
                                                      Are segments so bad?Jukka Larja2020/01/16 10:08 AM
                                                        Are segments so bad?Brendan2020/01/17 12:52 PM
                                                          Are segments so bad?Jukka Larja2020/01/17 09:08 PM
                                                            Are segments so bad?Brendan2020/01/18 11:40 AM
                                                              Are segments so bad?Jukka Larja2020/01/18 09:13 PM
                                                                Are segments so bad?Brendan2020/01/19 11:25 AM
                                                                  Are segments so bad?Brett2020/01/19 02:18 PM
                                                                    Are segments so bad?Brett2020/01/19 02:34 PM
                                                                  Are segments so bad?Gabriele Svelto2020/01/19 11:57 PM
                                                                  Are segments so bad?Jukka Larja2020/01/20 04:54 AM
                                                                    Are segments so bad?Brendan2020/01/20 11:43 AM
                                                                      Are segments so bad?Jukka Larja2020/01/21 06:01 AM
                                                                        Are segments so bad?Brendan2020/01/21 05:04 PM
                                                                          Are segments so bad?Jukka Larja2020/01/22 06:30 AM
                                                                            Are segments so bad?Brendan2020/01/22 02:56 PM
                                                                              Are segments so bad?Jukka Larja2020/01/23 07:44 AM
                                                      Are segments so bad?rwessel2020/01/16 02:06 PM
                                                      Are segments so bad?Gabriele Svelto2020/01/16 02:13 PM
                                                        Are segments so bad?Brendan2020/01/17 12:51 PM
                                                          Are segments so bad?Gabriele Svelto2020/01/17 02:18 PM
                                                            Are segments so bad?Anon2020/01/17 07:01 PM
                                                              Are segments so bad?Gabriele Svelto2020/01/20 12:06 AM
                                                            Are segments so bad?Brendan2020/01/18 02:15 PM
                                                              Are segments so bad?Gabriele Svelto2020/01/19 11:55 PM
                                                                Are segments so bad?Michael S2020/01/20 04:30 AM
                                                                  Are segments so bad?Gabriele Svelto2020/01/20 07:02 AM
                                                                    Are segments so bad?Jukka Larja2020/01/20 07:41 AM
                                                                    Are segments so bad?Michael S2020/01/20 07:45 AM
                                                                      Are segments so bad?Gabriele Svelto2020/01/20 08:36 AM
                                                                Are segments so bad?Brendan2020/01/20 10:04 AM
                                                                  Are segments so bad?Michael S2020/01/20 12:22 PM
                                                                    Are segments so bad?Brendan2020/01/20 01:38 PM
                                                                      Are segments so bad?Simon Farnsworth2020/01/20 02:40 PM
                                                                        Are segments so bad?Anon2020/01/20 03:35 PM
                                                                          Are segments so bad?Simon Farnsworth2020/01/20 04:30 PM
                                                                      Are segments so bad?Michael S2020/01/20 04:20 PM
                                                                  Are segments so bad?Gabriele Svelto2020/01/21 04:08 AM
                                                                    Are segments so bad?Brendan2020/01/21 05:07 PM
                                                                      Are segments so bad?Gabriele Svelto2020/01/22 12:53 AM
                                                                        Are segments so bad?Brendan2020/01/22 03:32 AM
                                                                          Are segments so bad?Jukka Larja2020/01/22 06:12 AM
                                                                            Are segments so bad?Brendan2020/01/22 03:28 PM
                                                                              Are segments so bad?Jukka Larja2020/01/23 06:36 AM
                                                                                Are segments so bad?Brendan2020/01/24 06:27 PM
                                                                                  Are segments so bad?Jukka Larja2020/01/24 09:42 PM
                                                                                    Are segments so bad?Brendan2020/01/25 01:46 AM
                                                                                      Are segments so bad?Jukka Larja2020/01/25 07:29 AM
                                                                                        Are segments so bad?Brendan2020/01/26 10:17 PM
                                                                                          Are segments so bad?Jukka Larja2020/01/27 06:55 AM
                                                                                            Are segments so bad?Gabriele Svelto2020/01/27 03:33 PM
                                                                                              Are segments so bad?Jukka Larja2020/01/28 05:28 AM
                                                                                                DDS assets and MipMap chainsMontaray Jack2020/01/29 02:26 AM
                                                                                      Are segments so bad?gallier22020/01/27 02:58 AM
                                                                                        Are segments so bad?Jukka Larja2020/01/27 05:19 AM
                                                                                  Are segments so bad?Anne O. Nymous2020/01/25 02:23 AM
                                                                            Are segments so bad?Anon2020/01/22 04:52 PM
                                                                              Are segments so bad?Anne O. Nymous2020/01/23 12:24 AM
                                                                                Are segments so bad?Anon2020/01/23 04:24 PM
                                                                                  Are segments so bad?Anne O. Nymous2020/01/23 11:43 PM
                                                                                    Are segments so bad?Anon2020/01/24 03:04 AM
                                                                                      Are segments so bad?Etienne2020/01/24 05:10 AM
                                                                              Are segments so bad?Gabriele Svelto2020/01/23 12:48 AM
                                                                                Are segments so bad?Michael S2020/01/23 02:48 AM
                                                                                Are segments so bad?Jukka Larja2020/01/23 06:38 AM
                                                                                  Are segments so bad?Gabriele Svelto2020/01/23 12:29 PM
                                                                                    Are segments so bad?Anon2020/01/23 05:08 PM
                                                                                      Are segments so bad?Jukka Larja2020/01/24 08:51 PM
                                                                                Are segments so bad?Anon2020/01/23 05:02 PM
                                                                                  Are segments so bad?Gabriele Svelto2020/01/24 02:57 AM
                                                                                    Are segments so bad?Anon2020/01/24 03:17 AM
                                                                                      Are segments so bad?Gabriele Svelto2020/01/24 08:23 AM
                                                                                        Are segments so bad?Anon2020/02/02 09:15 PM
                                                                                          Are segments so bad?Gabriele Svelto2020/02/03 12:47 AM
                                                                                            Are segments so bad?Anon2020/02/03 01:34 AM
                                                                                              Are segments so bad?Gabriele Svelto2020/02/03 04:36 AM
                                                                                                Are segments so bad?Anon32020/02/03 07:47 AM
                                                                                                Are segments so bad?Anon2020/02/04 04:49 PM
                                                                                  Are segments so bad?Jukka Larja2020/01/24 09:10 PM
                                                          Are segments so bad?Jukka Larja2020/01/17 09:26 PM
                                Are segments so bad?Anne O. Nymous2020/01/12 03:18 AM
                                  Are segments so bad?Jukka Larja2020/01/12 07:41 AM
                            Are segments so bad?rwessel2020/01/11 12:31 PM
                          Are segments so bad?Anne O. Nymous2020/01/11 07:22 AM
                      Are segments so bad?Ricardo B2020/01/11 07:01 PM
                        Are segments so bad?Adrian2020/01/11 11:18 PM
                          Are segments so bad?Michael S2020/01/12 01:43 AM
                            Are segments so bad?Adrian2020/01/12 03:35 AM
                          Are segments so bad?Ricardo B2020/01/12 11:04 AM
                            Are segments so bad?Anon32020/01/12 04:52 PM
                            Are segments so bad?Brendan2020/01/12 08:58 PM
                      Are segments so bad?Paul A. Clayton2020/01/13 08:11 AM
        No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)rainstared2020/01/06 12:43 AM
          No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)Foo_2020/01/06 04:33 AM
            No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)dmcq2020/01/06 05:03 AM
            changes in contextCarlie Coats2020/01/09 08:06 AM
      No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)rainstar2020/01/09 09:16 PM
        No nuances, just buggy code (was: related to Spinlock implementation and the Linux Scheduler)Montaray Jack2020/01/09 10:11 PM
    Suggested reading for the authoranon2020/01/04 10:16 PM
      Suggested reading for the authorab2020/01/05 04:15 AM
        Looking at the other side (frequency scaling)Chester2020/01/06 09:19 AM
          Looking at the other side (frequency scaling)Foo_2020/01/06 10:00 AM
          Why spinlocks were usedFoo_2020/01/06 10:06 AM
            Why spinlocks were usedJukka Larja2020/01/06 11:59 AM
            Why spinlocks were usedSimon Cooke2020/01/06 02:16 PM
            Why spinlocks were usedRizzo2020/01/07 12:18 AM
          Looking at the other side (frequency scaling)ab2020/01/07 12:14 AM
    Cross-platform codeGian-Carlo Pascutto2020/01/06 07:00 AM
      Cross-platform codeMichael S2020/01/06 08:11 AM
        Cross-platform codeGian-Carlo Pascutto2020/01/06 11:33 AM
          Cross-platform codeMichael S2020/01/06 12:59 PM
            Cross-platform codeNksingh2020/01/06 11:09 PM
              Cross-platform codeMichael S2020/01/07 01:00 AM
              SRW lock implementationMichael S2020/01/07 01:35 AM
                SRW lock implementationNksingh2020/01/09 01:17 PM
                  broken URL in Linux source codeMichael S2020/01/14 12:56 AM
                    broken URL in Linux source codeTravis Downs2020/01/14 09:14 AM
                      broken URL in Linux source codeMichael S2020/01/14 09:48 AM
                        broken URL in Linux source codeTravis Downs2020/01/14 03:43 PM
                  SRW lock implementation - url brokenMichael S2020/01/14 02:07 AM
                    SRW lock implementation - url brokenTravis Downs2020/01/14 10:06 AM
                      SRW lock implementation - url brokengpderetta2020/01/15 03:28 AM
                        SRW lock implementation - url brokenTravis Downs2020/01/15 10:16 AM
                      SRW lock implementation - url brokenLinus Torvalds2020/01/15 10:20 AM
                        SRW lock implementation - url brokenTravis Downs2020/01/15 10:35 AM
                          SRW lock implementation - url brokenLinus Torvalds2020/01/16 10:24 AM
                    SRW lock implementation - url brokenKonrad Schwarz2020/02/05 09:19 AM
                    SRW lock implementation - url brokennksingh2020/02/05 01:42 PM
      Cross-platform codeLinus Torvalds2020/01/06 12:57 PM
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