Some alternatives for alias handling

By: Linus Torvalds (torvalds.delete@this.linux-foundation.org), October 28, 2014 11:47 am
Room: Moderated Discussions
Etienne (etienne_lorrain.delete@this.yahoo.fr) on October 28, 2014 10:00 am wrote:
>
> I would agree in the usual case, but things as simple as reading a vertical line
> of pixel of the screen may involve reading one TLB for each pixel, and if you are
> really unlucky it may have a bad cache behaviour.

Sure. And anybody who does that deserves anything they get. If you read vertical lines pixel by pixel, you're doing something wrong. In fact, if you touch the frame buffer at all with the CPU, you're probably doing something wrong, and performance isn't really the issue.

The thing is, the "big frame buffer" etc example is often used as an argument for big pages, and it's just BS. It's basically made up from historical bad hardware implementations and bad software running on top of it.

Sure, you can still use things like hugepages for this, but (a) no it doesn't really matter and (b) that definitely is not an argument for making the base page size bigger.

> But another side of having 4 Kbytes pages is that you also have the state of the page
> to maintain (accessed, written, ...) - are you sure writing a bit (i.e. reading a
> cache line, changing a bit, writing a cache line) may not take more time than
> the TLB fetching?
>
> I have to say I do not know that much here, I just know it is difficult to measure...

It *is* hard to measure, but certainly not impossible. Many years ago, I complained to Intel engineers when I measured the cost of making a PTE be dirty as being about 1500 cycles on a P4. It ends up being a micro-fault (not visible to SW, but acting pretty much like an exception into microcode) that then does the actual update. Really badly.

The P4 was fragile as hell in many situations like this.

However, that was really just a seriously bad implementation and is not an argument for bigger pages - it's an argument for not screwing up your page table handling!

It's still true that page table updates can be slow, but they normally really aren't a problem. They happen once or twice, it's not like you mmap things to then access them once and unmap them (and if you do do it for reading sparse data with some simple model, a sane OS will actually mark the pages accessed when populated, so you don't actually get the update behavior under the simple cases).

Side note: it's also an argument for micro-architectures that have been around for a long time, and have had these kinds of things sorted out over several incremental iterations. New micro-architectures tend to have all these kinds of corner-case glass jaws, and it really tends to take time and long-term effort for people to fix up increasingly higher-hanging fruit like getting the TLB and page tables right.

A lot of small incremental improvements in a lot of odd corner-case areas that do actually matter, but that don't necessarily show up as a huge deal of their own, especially not on simplistic benchmarks.

People who think you fix things by re-inventing the wheel and "clean it all up by redesigning it" end up always throwing out all that effort, and then you start from square one again. Oh well.

Linus
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TopicPosted ByDate
Cache pipelineHugo Décharnes2014/10/27 05:39 AM
  your picture is broken, not visible (NT)Heikki Kultala2014/10/27 07:09 AM
    your picture is broken, not visibleKaneki2014/10/27 07:24 AM
  Cache pipelinesune2014/10/27 11:58 AM
    Cache pipelineHugo Décharnes2014/10/27 01:59 PM
      Cache pipelinePatrick Chase2014/10/27 04:13 PM
        Some alternatives for alias handlingPaul A. Clayton2014/10/27 06:22 PM
          Some alternatives for alias handlingLinus Torvalds2014/10/27 09:48 PM
            Some alternatives for alias handlingEtienne2014/10/28 05:06 AM
              Some alternatives for alias handlinganon2014/10/28 07:42 AM
              Some alternatives for alias handlingLinus Torvalds2014/10/28 08:58 AM
                Some alternatives for alias handlingEtienne2014/10/28 10:00 AM
                  Some alternatives for alias handlingHugo Décharnes2014/10/28 11:34 AM
                  Some alternatives for alias handlingLinus Torvalds2014/10/28 11:47 AM
                    Some alternatives for alias handlingPatrick Chase2014/10/28 01:25 PM
                      Some alternatives for alias handlingLinus Torvalds2014/10/28 02:10 PM
                        HugepagesRobert David Graham2014/10/29 04:23 PM
                          Hugepages : Isn't the kernel itself put in hugepages ? (NT)TREZA2014/10/29 07:33 PM
                          HugepagesGabriele Svelto2014/10/30 12:52 AM
                          HugepagesHugo Décharnes2014/10/30 02:22 AM
                            Hugepagesanon2014/10/30 03:52 AM
                              HugepagesJouni Osmala2014/10/30 04:17 AM
                                Hugepagesanon2014/10/30 05:35 AM
                                  HugepagesMichael S2014/10/30 06:40 AM
                                  HugepagesJouni Osmala2014/10/30 07:38 AM
                                    HP has internet tool to play around cache parameters and see their latencies in nsJouni Osmala2014/10/31 01:47 AM
                                      HP has internet tool to play around cache parameters and see their latencies in nsPatrick Chase2014/10/31 10:21 AM
                                        HP has internet tool to play around cache parameters and see their latencies in nsJouni Osmala2014/10/31 11:58 AM
                                          HP has internet tool to play around cache parameters and see their latencies in nsLinus Torvalds2014/10/31 04:04 PM
                                            HP has internet tool to play around cache parameters and see their latencies in nsTREZA2014/10/31 06:23 PM
                                              HP has internet tool to play around cache parameters and see their latencies in nsLinus Torvalds2014/10/31 07:07 PM
                                                I understand better your disgust, direct map caches on CPUs as complex as Alphas is unforgiveable. (NT)TREZA2014/11/01 04:54 PM
                                                  21064 was not that complexMichael S2014/11/01 05:21 PM
                                                    21064 was not that complexPatrick Chase2014/11/03 12:40 PM
                                                      21064 was not that complexMichael S2014/11/03 01:13 PM
                                                        21064 was not that complexPatrick Chase2014/11/03 02:51 PM
                                                          21064 was not that complexMichael S2014/11/03 03:25 PM
                                                            21064 was not that complexPatrick Chase2014/11/03 06:52 PM
                                                              21064 was not that complexLinus Torvalds2014/11/03 10:38 PM
                                                                21064 was not that complexPatrick Chase2014/11/04 11:00 AM
                                                                  21064 was not that complexAnon2014/11/06 08:17 AM
                                                                    Could Alpha have been a volume play? Probably not...Mark Roulo2014/11/06 10:21 AM
                                                                      Could Alpha have been a volume play? Probably not...Anon2014/11/07 05:30 AM
                                                                        Could Alpha have been a volume play? Probably not...David Hess2014/11/18 08:38 PM
                                                                          Could Alpha have been a volume play? Probably not...Brett2014/11/18 10:17 PM
                                                                            Could Alpha have been a volume play? Probably not...Gabriele Svelto2014/11/19 03:01 AM
                                                                              Could Alpha have been a volume play? Probably not...Michael S2014/11/19 03:33 AM
                                                                                Could Alpha have been a volume play? Probably not...coppice2014/11/19 03:45 AM
                                                                                  ARM versions and popularityHeikki Kultala2014/11/20 01:28 AM
                                                                                    ARM versions and popularitycoppice2014/11/20 09:41 AM
                                                                                    ARM versions and popularitycoppice2014/11/20 09:55 AM
                                                                                      ARM versions and popularityMichael S2014/11/20 10:29 AM
                                                                                        ARM versions and popularitycoppice2014/11/20 11:03 AM
                                                                                          ARM versions and popularityMichael S2014/11/20 11:14 AM
                                                                                            ARM versions and popularitycoppice2014/11/20 11:26 AM
                                                                                      nokias processoers(re:ARM versions and popularity)Heikki Kultala2014/11/20 04:17 PM
                                                                                        nokias processoers(re:ARM versions and popularity)coppice2014/11/20 07:52 PM
                                                                                          nokias processoers(re:ARM versions and popularity)anon2014/11/20 10:18 PM
                                                                                            nokias processoers(re:ARM versions and popularity)Heikki Kultala2014/11/21 12:44 AM
                                                                                              nokias processoers(re:ARM versions and popularity)Rob Thorpe2014/11/22 10:00 AM
                                                                                          nokias processoers(re:ARM versions and popularity)Heikki Kultala2014/11/21 12:57 AM
                                                                                          nokias processoers(re:ARM versions and popularity)Rob Thorpe2014/11/22 09:54 AM
                                                                                            bluetooth(nokias processoers(re:ARM versions and popularity))Heikki Kultala2014/11/22 04:37 PM
                                                                                              bluetooth(nokias processoers(re:ARM versions and popularity))Rob Thorpe2014/11/22 08:52 PM
                                                                                  Could Alpha have been a volume play? Probably not...Rob Thorpe2014/11/20 05:01 AM
                                                                            worst coreRichardC2014/11/19 05:27 AM
                                                                              worst coredmcq2014/11/19 07:53 AM
                                                                                worst coreLinus Torvalds2014/11/19 10:55 AM
                                                                                  worst corePatrick Chase2014/11/19 11:34 AM
                                                                                    worst coreLinus Torvalds2014/11/19 12:15 PM
                                                                                  worst coredmcq2014/11/19 11:55 AM
                                                                                    worst coreLinus Torvalds2014/11/19 01:36 PM
                                                                                      worst coredmcq2014/11/19 02:36 PM
                                                                                        worst coreExophase2014/11/19 03:12 PM
                                                                                          worst coredmcq2014/11/19 05:46 PM
                                                                                            worst coreKonrad Schwarz2014/11/20 08:51 AM
                                                                                            worst coreExophase2014/11/20 07:59 PM
                                                                                      worst coreRichardC2014/11/19 06:07 PM
                                                                                        worst coredmcq2014/11/20 03:42 AM
                                                                                          worst coreRichardC2014/11/20 10:00 AM
                                                                                            worst coredmcq2014/11/20 05:15 PM
                                                                                    worst coreExophase2014/11/19 02:08 PM
                                                                          Could Alpha have been a volume play? Probably not...Maynard Handley2014/11/18 11:03 PM
                                                                            Americans brought the world Cheez-Whiz!Mark Roulo2014/11/19 10:06 AM
                                                                              Americans brought the world Cheez-Whiz!Brett2014/11/19 12:16 PM
                                                                                You have missed the pointMark Roulo2014/11/19 12:28 PM
                                                                                  You have missed the pointBrett2014/11/20 11:08 AM
                                                                                Americans brought the world Cheez-Whiz!Gabriele Svelto2014/11/19 03:17 PM
                                                                                  Americans brought the world Cheez-Whiz!James2014/11/20 06:15 AM
                                                                                    Americans brought the world Cheez-Whiz!Konrad Schwarz2014/11/20 09:00 AM
                                                                                Americans brought the world Cheez-Whiz!Wilco2014/11/19 03:41 PM
                                                                                  ARM2 vs 8088 or 80386?Mark Roulo2014/11/19 04:40 PM
                                                                                    ARM2 vs 8088 or 80386?Wilco2014/11/19 05:53 PM
                                                                                    ARM2 vs 8088 or 80386?Linus Torvalds2014/11/19 06:03 PM
                                                                                      Even 486 was fairly slowWilco2014/11/19 07:07 PM
                                                                                        Even 486 was fairly slowLinus Torvalds2014/11/20 11:50 AM
                                                                                          Even 486 was fairly slowLinus Torvalds2014/11/20 12:09 PM
                                                                                            Even 486 was fairly slowDoug S2014/11/20 09:51 PM
                                                                                          Even 486 was fairly slowincorrector2014/11/20 01:57 PM
                                                                                            Even 486 was fairly slowLinus Torvalds2014/11/20 02:44 PM
                                                                                              Even 486 was fairly slowincorrector2014/11/20 04:01 PM
                                                                                                Even 486 was fairly slowLinus Torvalds2014/11/20 04:11 PM
                                                                                                  Even 486 was fairly slowincorrector2014/11/20 04:58 PM
                                                                                              Even 486 was fairly slowWilco2014/11/20 04:16 PM
                                                                                                Even 486 was slow: 33Mhz was faster than 66MhzJouni Osmala2014/11/21 06:03 AM
                                                                                                  Even 486 was slow: 33Mhz was faster than 66MhzJames2014/11/21 06:47 AM
                                                                                              Even 486 was fairly slowJesper Frimann2014/11/21 02:00 AM
                                                                                            Even 486 was fairly slowSeni2014/11/20 03:51 PM
                                                                                              Even 486 was fairly slowincorrector2014/11/20 04:32 PM
                                                                                                Even 486 was fairly slowYuhong Bao2014/11/20 06:26 PM
                                                                                                Even 486 was fairly slowcoppice2014/11/20 07:21 PM
                                                                                              Even 486 was fairly slowHeikki Kultala2014/11/21 01:07 AM
                                                                                                Even 486 was fairly slowGabriele Svelto2014/11/21 02:51 AM
                                                                                          Even 486 was fairly slowcoppice2014/11/20 07:01 PM
                                                                                      ARM2 vs 8088 or 80386?David Hess2014/11/19 09:15 PM
                                                                                        ARM2 vs 8088 or 80386?rwessel2014/11/19 10:07 PM
                                                                                        ARM2 vs 8088 or 80386?Yuhong Bao2014/11/19 11:54 PM
                                                                                        80286 vs 80386Heikki Kultala2014/11/20 12:55 AM
                                                                                      ARM2 vs 8088 or 80386?Michael S2014/11/20 02:00 AM
                                                                                    ARM2 vs 8088 or 80386?incorrector2014/11/20 09:49 AM
                                                                                    ARM2 vs 8088 or 80386?Tim McCffrey2014/11/20 03:19 PM
                                                                                      ARM2 vs 8088 or 80386?Wilco2014/11/20 04:57 PM
                                                                                        ARM2 vs 8088 or 80386?Tim McCaffrey2014/11/21 02:10 PM
                                                                                          ARM2 vs 8088 or 80386?Wilco2014/11/21 05:48 PM
                                                                                            ARM2 vs 8088 or 80386?Linus Torvalds2014/11/21 06:10 PM
                                                                                              ARM2 vs 8088 or 80386?incorrector2014/11/21 06:40 PM
                                                                                                ARM2 vs 8088 or 80386?Linus Torvalds2014/11/22 12:14 AM
                                                                                                  ARM2 vs 8088 or 80386?Exophase2014/11/22 01:03 AM
                                                                                                  ARM2 vs 8088 or 80386?incorrector2014/11/22 01:58 PM
                                                                                                    ARM2 vs 8088 or 80386?Linus Torvalds2014/11/22 04:07 PM
                                                                                                      ARM2 vs 8088 or 80386?incorrector2014/11/22 05:45 PM
                                                                                                      Would Linux have still existed?Doug S2014/11/22 07:00 PM
                                                                                                        Would Linux have still existed?Linus Torvalds2014/11/23 12:30 PM
                                                                                                      ARM2 vs 8088 or 80386?Wilco2014/11/23 08:30 AM
                                                                                                        ARM2 vs 8088 or 80386?Patrick Chase2014/11/23 12:02 PM
                                                                                                          386BSD? (NT)Michael S2014/11/23 12:08 PM
                                                                                                            386BSD?Linus Torvalds2014/11/23 12:21 PM
                                                                                                          ARM2 vs 8088 or 80386?Yuhong Bao2014/11/23 04:29 PM
                                                                                                          ARM2 vs 8088 or 80386?Ricardo B2014/11/23 05:05 PM
                                                                                                        ARM2 vs 8088 or 80386?Linus Torvalds2014/11/23 04:58 PM
                                                                                                          ARM2 vs 8088 or 80386?Yuhong Bao2014/11/23 05:19 PM
                                                                                                            ARM2 vs 8088 or 80386?Patrick Chase2014/11/24 12:51 PM
                                                                                                              ARM2 vs 8088 or 80386?Yuhong Bao2014/11/24 06:23 PM
                                                                                                                ARM2 vs 8088 or 80386?Doug S2014/11/24 08:51 PM
                                                                                                                  ARM2 vs 8088 or 80386?Yuhong Bao2014/11/25 06:11 PM
                                                                                                                  ARM2 vs 8088 or 80386?Patrick Chase2014/11/25 07:52 PM
                                                                                                                    ARM2 vs 8088 or 80386?Linus Torvalds2014/11/25 11:04 PM
                                                                                                                      ARM2 vs 8088 or 80386?Patrick Chase2014/11/26 06:47 PM
                                                                                                                        ARM2 vs 8088 or 80386?Doug S2014/11/27 01:04 AM
                                                                                                                          ARM2 vs 8088 or 80386?Maynard Handley2014/11/27 11:26 AM
                                                                                                                          ARM2 vs 8088 or 80386?NoSpammer2014/11/27 01:07 PM
                                                                                                      ARM2 vs 8088 or 80386?Yuhong Bao2014/11/23 05:37 PM
                                                                                                ARM2 vs 8088 or 80386?dmcq2014/11/22 05:29 AM
                                                                                                ARM2 vs 8088 or 80386?pgerassi2014/11/22 05:54 AM
                                                                                                  ARM2 vs 8088 or 80386?Yuhong Bao2014/11/22 12:46 PM
                                                                                            ARM2 vs 8088 or 80386?Tim McCaffrey2014/11/23 09:01 PM
                                                                                              ARM2 vs 8088 or 80386?Exophase2014/11/23 09:41 PM
                                                                                                ARM2 vs 8088 or 80386?gallier22014/11/24 12:20 AM
                                                                                                  ARM2 vs 8088 or 80386?Exophase2014/11/24 01:07 AM
                                                                                                    ARM2 vs 8088 or 80386?Exophase2014/11/24 01:11 AM
                                                                                                    ARM2 vs 8088 or 80386?gallier22014/11/24 03:14 AM
                                                                                                    ARM2 vs 8088 or 80386?Linus Torvalds2014/11/24 10:53 AM
                                                                                                      ARM2 vs 8088 or 80386?Exophase2014/11/24 11:56 AM
                                                                                                        ARM2 vs 8088 or 80386?Patrick Chase2014/11/26 11:37 AM
                                                                                                          ARM2 vs 8088 or 80386?coppice2014/11/26 06:45 PM
                                                                                                    ARM2 vs 8088 or 80386?David Hess2014/12/07 03:21 AM
                                                                                                      ARM2 vs 8088 or 80386?Exophase2014/12/07 04:47 AM
                                                                                                        ARM2 vs 8088 or 80386?David Hess2014/12/07 10:05 AM
                                                                                                          ARM2 vs 8088 or 80386?Yuhong Bao2014/12/07 04:08 PM
                                                                                              ARM2 vs 8088 or 80386?incorrector2014/11/24 02:39 AM
                                                                                                ARM2 vs 8088 or 80386?Michael S2014/11/24 02:58 AM
                                                                                                  ARM2 vs 8088 or 80386?incorrector2014/11/24 05:03 AM
                                                                                                ARM2 vs 8088 or 80386?Tim McCaffrey2014/11/24 11:48 AM
                                                                                                  ARM2 vs 8088 or 80386?incorrector2014/11/24 04:58 PM
                                                                                        ARM2 vs 8088 or 80386?gallier22014/11/23 02:13 AM
                                                                                          ARM2 vs 8088 or 80386?Wilco2014/11/23 07:47 AM
                                                                                            ARM2 vs 8088 or 80386?gallier22014/11/23 10:41 AM
                                                                                          ARM2 vs 8088 or 80386?_Arthur2014/11/24 09:37 AM
                                                                              Americans brought the world Cheez-Whiz!coppice2014/11/19 09:47 PM
                                                                          Could Alpha have been a volume play? Probably not...coppice2014/11/19 02:24 AM
                                                                            Could Alpha have been a volume play? Probably not...Gabriele Svelto2014/11/19 03:38 AM
                                                                        Could Alpha have been a volume play? Probably not...coppice2014/11/19 02:31 AM
                                                                    21064 was not that complexLinus Torvalds2014/11/06 11:28 AM
                                                                      21064 was not that complexDoug S2014/11/06 12:07 PM
                                                                        21064 was not that complexLinus Torvalds2014/11/06 03:39 PM
                                                                          21064 was not that complexDoug S2014/11/06 10:03 PM
                                                                          21064 was not that complexcoppice2014/11/07 08:55 AM
                                                                            21064 was not that complexLinus Torvalds2014/11/07 02:50 PM
                                                                              21064 was not that complexcoppice2014/11/10 02:59 AM
                                                                                21064 was not that complexMichael S2014/11/10 03:09 AM
                                                                                  21064 was not that complexcoppice2014/11/10 03:20 AM
                                                                        21064 was not that complexanon2014/11/07 05:46 AM
                                                                        21064 was not that complexPatrick Chase2014/11/16 08:12 PM
                                                                      21064 was not that complexanon2014/11/07 05:35 AM
                                                                    Samsung and Alpha Processor IncRichardC2014/11/09 06:03 AM
                                                                      Samsung and Alpha Processor IncKevin G2014/11/11 08:49 AM
                                                                        Samsung and Alpha Processor IncRichardC2014/11/12 09:04 PM
                                                                          Samsung and Alpha Processor IncRichardC2014/11/13 02:04 PM
                                                                            Samsung and Alpha Processor IncYuhong Bao2014/11/20 06:48 PM
                                              MIPS made 2- and 4-way associative off-chip cachesPaul A. Clayton2014/11/01 06:17 AM
                                                MIPS made 2- and 4-way associative off-chip cachesrwessel2014/11/01 08:10 AM
                                                  Yes, Pentium Pro had 4-way associative L2Paul A. Clayton2014/11/01 09:15 AM
                                                    Yes, Pentium Pro had 4-way associative L2Antti-Ville Tuunainen2014/11/02 01:34 AM
                                            HP has internet tool to play around cache parameters and see their latencies in nsJouni Osmala2014/11/01 09:13 AM
                                  HugepagesPatrick Chase2014/10/30 09:43 PM
                              HugepagesHugo Décharnes2014/10/30 04:47 AM
                                Hugepagesanon2014/10/30 05:49 AM
                                  HugepagesHugo Décharnes2014/10/30 09:08 AM
                                    Hugepagesanon2014/10/30 10:42 AM
                                      ASIDsDavid Kanter2014/10/30 11:41 PM
                                        ASIDsPatrick Chase2014/10/31 10:00 AM
                                          ASIDsMegol2014/11/01 03:19 AM
                                            PCIDs, enabled since Westmere (NT)David Kanter2014/11/01 12:12 PM
                                              PCIDs, enabled since WestmerePatrick Chase2014/11/03 01:03 AM
                                                PCIDs, enabled since WestmereDavid Kanter2014/11/03 08:01 AM
                                                  PCIDs, enabled since WestmerePatrick Chase2014/11/03 09:22 AM
                                    HugepagesPatrick Chase2014/10/30 10:14 PM
                                      HugepagesHugo Décharnes2014/10/31 02:32 AM
                                        HugepagesBrendan2014/10/31 10:43 AM
                                          HugepagesLinus Torvalds2014/10/31 12:25 PM
                                            HugepagesLinus Torvalds2014/10/31 12:43 PM
                              Compare with SPARCgallier22014/10/31 01:05 AM
                                Compare with SPARCGabriele Svelto2014/10/31 03:42 AM
                                  16k pagesIan Ameline2014/11/02 07:12 AM
                                    16k pagesLinus Torvalds2014/11/02 11:50 AM
                                      16k pagesDoug S2014/11/02 03:18 PM
                                        16k pagesLinus Torvalds2014/11/03 11:45 AM
                                      16k pagesnksingh2014/11/02 09:26 PM
                                        16k pages and memory usageDavid Kanter2014/11/03 08:03 AM
                                          16k pages and memory usageanon2014/11/03 10:28 AM
                                            16k pages and memory usageDavid Kanter2014/11/03 10:39 AM
                                              16k pages and memory usageanon2014/11/03 11:06 AM
                        Some alternatives for alias handlingEtienne2014/10/31 04:48 AM
                          Write combining?Paul A. Clayton2014/10/31 05:50 AM
                            Write combining?rwessel2014/10/31 09:16 AM
                          Some alternatives for alias handlingMichael S2014/10/31 05:56 AM
                            Some alternatives for alias handlingEric Bron2014/10/31 06:50 AM
                              Some alternatives for alias handlingMichael S2014/10/31 07:12 AM
                            Some alternatives for alias handlingEtienne2014/10/31 07:38 AM
                              Some alternatives for alias handlingEric Bron2014/10/31 08:06 AM
                                Some alternatives for alias handlingEtienne2014/10/31 08:30 AM
                                  Some alternatives for alias handlingEric Bron2014/10/31 08:45 AM
                                  Some alternatives for alias handlingEric Bron2014/10/31 08:54 AM
                              Some alternatives for alias handlingMichael S2014/11/01 10:38 AM
                            Some alternatives for alias handlingKonrad Schwarz2014/10/31 08:11 AM
                              Some alternatives for alias handlingMichael S2014/11/01 10:11 AM
                    Some alternatives for alias handlingEtienne2014/10/29 04:28 AM
                      Some alternatives for alias handlinganon2014/10/29 05:19 AM
                        Some alternatives for alias handlingEtienne2014/10/29 07:47 AM
                          Some alternatives for alias handlinganon2014/10/29 08:17 AM
            The real reason for page coloring etc...Jouni Osmala2014/10/29 12:33 AM
          Some alternatives for alias handlingPatrick Chase2014/10/28 10:20 AM
        Cache pipelineHugo Décharnes2014/10/28 12:55 AM
          Cache pipelinePatrick Chase2014/10/28 10:41 AM
        Cache pipelineHugo Décharnes2014/10/28 01:17 AM
          Cache pipelinePatrick Chase2014/10/28 10:43 AM
            Cache pipelineHugo Décharnes2014/10/28 11:13 AM
              Cache pipelineKlimax2014/10/28 11:36 AM
                Cache pipelineHugo Décharnes2014/10/28 11:58 AM
                  Cache pipelinePatrick Chase2014/10/28 01:49 PM
                    Cache pipelineHugo Décharnes2014/10/28 02:45 PM
                      Cache pipelinePatrick Chase2014/10/28 03:19 PM
                        Cache pipelineHugo Décharnes2014/10/29 12:59 AM
                          This assumes (tag) inclusionPaul A. Clayton2014/10/29 06:17 AM
                            This assumes (tag) inclusionHugo Décharnes2014/10/29 06:59 AM
                          Cache pipelineJouni Osmala2014/10/29 06:50 AM
                            Cache pipelineHugo Décharnes2014/10/29 07:24 AM
                              Cache pipelineJouni Osmala2014/10/29 07:59 AM
                                Cache pipelineHugo Décharnes2014/10/29 08:23 AM
        Cache pipelineMichael S2014/10/28 01:37 AM
          Fun with terminologyPatrick Chase2014/10/28 10:17 AM
            Fun with terminologyEtienne2014/10/29 03:28 AM
              Fun with terminologyHugo Décharnes2014/10/29 04:25 AM
              %(2<<n) indexing can also be painful (NT)Paul A. Clayton2014/10/29 06:20 AM
              Fun with terminologyPatrick Chase2014/10/29 10:23 AM
  Cache pipelineHugo Décharnes2014/10/29 04:40 AM
    Cache read is probably multiple cyclesPaul A. Clayton2014/10/29 08:15 AM
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