Some alternatives for alias handling

By: Linus Torvalds (torvalds.delete@this.linux-foundation.org), October 28, 2014 8:58 am
Room: Moderated Discussions
Etienne (etienne_lorrain.delete@this.yahoo.fr) on October 28, 2014 5:06 am wrote:
>
> But if your "source" and "result" files are high resolution photos or videos, it looks
> like a lot of work to manage them in 4 Kb quantities.

It isn't, actually.

People always bring up big files (or, as anon mentioned, frame buffers), but it's a total red herring.

If you are working with big datasets, your primary issue is going to be the data, not the TLB. To get good performance, you want to try to make sure that you have good locality, because if you don't, you're blowing your D$ to hell, and that is going to be your primary source of problems. And if you have any kind of reasonable locality, the TLB isn't going to be all that noticeable.

Now, there are exceptions to this, but they all boil down to incompetence:

- If you have a software TLB fill, you're never going to make it fast.

I used to really like SW TLB fills. They are generic, they are wonderful for playing tricks (want to do per-cpu variations of the mappings? Go wild!), and they look incredibly clean in architecture manuals. In other words, I fell for them too.

And then I grew up, and stopped believing in Santa Claus and the Easter Bunny, and I realized that SW-filled TLB's are just stupid. Don't do them. The cost is too f*cking high. I'm sorry. It's just a fact.

- Too many people do bad HW filled TLBs too

If your TLB miss is all synchronous, and causes some kind of slow state machine, and you don't cache your page tables, your HW fill isn't going to be any faster than a SW fill. That makes the SW fill look like a good idea. But see above. It's not.

The big advantage of a HW filled TLB isn't that "it's hardware". That's not what makes it fast. No, the big advantage of a HW-filled TLB is that you can hide the fact that you do asynchronous TLB fills and that you can do them speculatively etc. And that you can possibly do multiple entries at a time, and use special TLB fill caches etc.

- Yeah, if your page tables have horrible locality, you'll have performance problems filling them.

Don't do hashed page tables. Really. Just don't. They are a disaster. Locality matters, and the page tables have to be cached. Maybe you'll never bring them into the L1, and decide that the L2 together with perhaps a special "page table line cache" for adjacent entries is a good model. But regardless of what you do, you need to use a data structure that gives locality. Just do the tree-based one. Don't think your odd crap is "clever". It's not.

- Yeah, if you still have issues, make sure your TLB is large enough.

Use a L2 or even a L3 cache of just TLB entries. Make sure you don't have tons of capacity misses just because your TLB is too small. I've seen TLB's that had smaller coverage than the L3 caches on the CPU even if those caches had perfect utilization. Who the f*ck thought that was a good idea? Make a L2 or L3 TLB so that your TLB matches the caches you have, for chissake.

- Yeah, have a few bits of TLB address space tags. Even just two.

Don't flush the TLB just because some load bounces between a few processes. Intel, I'm looking at you. Don't make the ASID be some virtualization-only special case. Expose it to people who want to use it in general.

- Don't make filling the page tables too expensive

This includes things like making page faults (for those mandatory misses!) too expensive. We have this problem on Intel - the page fault (both the actual exception, but also the iret to return from it) are excessively slow. But you have it for another reason on powerpc, for example: the crazy hashed page tables are just more cost and complexity to set up and tear down.


Anyway.

The point is, people who say "do large pages" invariably seem to say it because they have a shit-for-brains TLB handling, and they can't be bothered to fix the real issues. Making the page size bigger is the broken "cheap" fix. Exactly like making the D$ cacheline longer is the broken "cheap" fix for "my memory controller is crap".

Linus

PS. Honesty in advertising: you can always come up with loads where TLB's are a noticeable part even if you've spent tons of effort on them. Sometimes you simply do not have good locality, and some pointer-chasing loads may have a relatively small D$ footprint, and a relatively large TLB footprint, for example. Tough. TLB's are caches, and caches don't work without locality.
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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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How do you spell green?