An elaborate theory of why AMD64 succeeded

By: anon (anon.delete@this.anon.com), August 22, 2013 1:25 am
Room: Moderated Discussions
Michael S (already5chosen.delete@this.yahoo.com) on August 21, 2013 10:02 am wrote:
> Stubabe (Stubabe.delete@this.nospam.com) on August 21, 2013 9:43 am wrote:

> > But lots do (and certainly far more than 0.1%): databases are a classic example and highly relevant
> > to a lot of the server market,
>
> Databases is one of the few cases where PAE actually worked quite well.
> For big databases of early 00s, the biggest x386 problem was not a PAE itself, but the fact that under PAE physical
> address was limited to 36 bits. Which, of course, could have been lifted without full 64-bittness.

In some cases, for some types of database, depends on the design.

Oracle allocates a huge shared "buffercache" (with a shared-memory "file" in Linux), and all DB processes map that file, and the cache/IO manager can just return an index to the buffercache when a database page has been brought in from disk.

Pretty efficient because the cache and IO processes can do zero copy IO to load and store data from processes that are processing the client requests. OS can stay completely out of the way and becomes little more than a process scheduler + SCSI/network device driver. Shared memory can be mapped with large size TLBs.

When the buffer cache is larger than addressable memory, you have to window into it (hence remap_file_pages nasty hack from RedHat/Oracle). Which now means system calls, TLB shootdowns, inefficient use of large TLBs, and an extra layer in the cache hierarchy (mapped data vs resident data).

You might say "well, it's a cache, so your mapped memory cache should be able to soak up a large amount of hits so you only need to remap on infrequent miss". True to some extent. So it did work quite well for, say, 8-16GB. But keep increasing memory sizes and the mapped memory size becomes ever smaller part of the data you are trying to keep in your in-memory working set, and that starts to break down.

In Linux, this windowing overhead did become a significant Oracle performance overhead before they abandoned 32-bit PAE.

DB2 does roughly the same buffercache mapping, but I don't know if they ever bothered with these mapping hacks.

So it does work quite well, but only if you factor in a redesign of part of the core code, and only for some values of quite well. Certainly you could not have just continued to add more physical address bits without any adverse affect.

Databases which do not care so much for zero-copy IOs and use OS cache for caching tables may get a bit more mileage (PostgreSQL). But even they need to have mapped memory in the process for hot-cache, query optimization, sorting, etc. So they will run in to limits as well.
< Previous Post in ThreadNext Post in Thread >
TopicPosted ByDate
Power Goes LicensableKira2013/08/06 09:51 AM
  Power Goes Licensablesomeone2013/08/06 11:22 AM
    Power Goes Licensablesomeone2013/08/06 11:25 AM
      Power Goes LicensableDoug S2013/08/06 11:47 AM
        Trusted Foundry programMark Roulo2013/08/06 12:25 PM
          Trusted Foundry programMax2013/08/06 12:51 PM
          Trusted Foundry programKevin G2013/08/07 08:08 AM
            Trusted Foundry programMark Roulo2013/08/07 09:55 AM
              Trusted Foundry programKevin G2013/08/07 11:00 AM
  is it?Michael S2013/08/06 03:05 PM
    is it?Mark Roulo2013/08/06 04:16 PM
      is it?anon2013/08/06 05:30 PM
    is it?Eric2013/08/06 04:31 PM
      is it?Kira2013/08/06 05:17 PM
        is it?Eric2013/08/06 09:45 PM
  How does Power compare to ARM / MIPS?Drazick2013/08/11 03:27 AM
    How does Power compare to ARM / MIPS?Kira2013/08/11 04:52 PM
    How does Power compare to ARM / MIPS?Michael S2013/08/12 04:08 AM
    How does Power compare to ARM / MIPS?Brett2013/08/12 06:50 PM
      How does Power compare to ARM / MIPS?Mark Roulo2013/08/13 10:11 AM
        How does Power compare to ARM / MIPS?none2013/08/13 10:22 AM
          How does Power compare to ARM / MIPS?none2013/08/13 10:23 AM
        How does Power compare to ARM / MIPS?EduardoS2013/08/13 11:42 AM
          How does Power compare to ARM / MIPS?Exophase2013/08/13 12:27 PM
            How does Power compare to ARM / MIPS?Patrick Chase2013/08/15 12:17 PM
              How does Power compare to ARM / MIPS?David Hess2013/08/15 02:38 PM
                How does Power compare to ARM / MIPS?Mark Roulo2013/08/15 03:31 PM
                  How does Power compare to ARM / MIPS?EduardoS2013/08/15 08:45 PM
                    How does Power compare to ARM / MIPS?Patrick Chase2013/08/15 08:54 PM
                      How does Power compare to ARM / MIPS?EduardoS2013/08/15 09:21 PM
                How does Power compare to ARM / MIPS?Patrick Chase2013/08/15 07:47 PM
              How does Power compare to ARM / MIPS?Exophase2013/08/15 07:56 PM
                How does Power compare to ARM / MIPS?Patrick Chase2013/08/15 08:41 PM
        Server and Embedded "environments" are still distinguishedPaul A. Clayton2013/08/13 06:31 PM
        How does Power compare to ARM / MIPS?Michael S2013/08/14 01:45 AM
        How does Power compare to ARM / MIPS?Brett2013/08/14 08:17 PM
          How does Power compare to ARM / MIPS?anon2013/08/15 12:13 AM
            How does Power compare to ARM / MIPS?David Kanter2013/08/15 01:23 AM
              How does Power compare to ARM / MIPS?anon2013/08/15 03:51 AM
                How does Power compare to ARM / MIPS?someone2013/08/15 11:46 AM
          How does Power compare to ARM / MIPS?none2013/08/15 03:47 AM
          How does Power compare to ARM / MIPS?Doug S2013/08/15 09:46 AM
            How does Power compare to ARM / MIPS?David Kanter2013/08/15 12:48 PM
              Initial 64-bit ARM *can* run older 32-bit ARM codeMark Roulo2013/08/15 01:56 PM
                Initial 64-bit ARM *can* run older 32-bit ARM codeRonald Maas2013/08/19 09:19 PM
                  Initial 64-bit ARM *can* run older 32-bit ARM codeanon2013/08/20 01:58 AM
                    Initial 64-bit ARM *can* run older 32-bit ARM codeLinus Torvalds2013/08/20 10:58 AM
                      Initial 64-bit ARM *can* run older 32-bit ARM codeRicardo B2013/08/20 03:27 PM
                        Initial 64-bit ARM *can* run older 32-bit ARM coderwessel2013/08/20 04:04 PM
                        Initial 64-bit ARM *can* run older 32-bit ARM codeLinus Torvalds2013/08/20 04:05 PM
                          Initial 64-bit ARM *can* run older 32-bit ARM codeMichael S2013/08/20 04:54 PM
                            Initial 64-bit ARM *can* run older 32-bit ARM codeLinus Torvalds2013/08/20 05:09 PM
                          Initial 64-bit ARM *can* run older 32-bit ARM codeTREZA2013/08/21 06:06 AM
                            Initial 64-bit ARM *can* run older 32-bit ARM codeLinus Torvalds2013/08/21 09:50 AM
                              Initial 64-bit ARM *can* run older 32-bit ARM codeTREZA2013/08/21 12:39 PM
                          Initial 64-bit ARM *can* run older 32-bit ARM codeRicardo B2013/08/22 05:25 AM
                            Initial 64-bit ARM *can* run older 32-bit ARM codeEduardoS2013/08/22 06:59 AM
                              Initial 64-bit ARM *can* run older 32-bit ARM codeRicardo B2013/08/22 07:28 AM
                                Initial 64-bit ARM *can* run older 32-bit ARM codeEduardoS2013/08/22 08:36 AM
                                  Initial 64-bit ARM *can* run older 32-bit ARM codeRicardo B2013/08/22 09:21 AM
                                    Initial 64-bit ARM *can* run older 32-bit ARM codeEduardoS2013/08/22 10:02 AM
                        Initial 64-bit ARM *can* run older 32-bit ARM codeGabriele Svelto2013/08/21 03:26 AM
                          Initial 64-bit ARM *can* run older 32-bit ARM codeRicardo B2013/08/22 05:43 AM
                            Initial 64-bit ARM *can* run older 32-bit ARM codeRicardo B2013/08/22 05:47 AM
                        Initial 64-bit ARM *can* run older 32-bit ARM codeDan Fay2013/08/21 01:13 PM
                          Initial 64-bit ARM *can* run older 32-bit ARM codeDavid Hess2013/08/22 10:55 AM
                            Initial 64-bit ARM *can* run older 32-bit ARM codegallier22013/08/22 12:35 PM
                              Initial 64-bit ARM *can* run older 32-bit ARM codeDavid Hess2013/08/22 01:26 PM
                      Initial 64-bit ARM *can* run older 32-bit ARM codeRonald Maas2013/08/20 05:38 PM
                      Initial 64-bit ARM *can* run older 32-bit ARM codeanon2013/08/20 06:07 PM
                        Initial 64-bit ARM *can* run older 32-bit ARM codeMichael S2013/08/21 05:15 AM
                          Initial 64-bit ARM *can* run older 32-bit ARM codeanon2013/08/21 06:01 AM
                      An elaborate theory of why AMD64 succeeded2013/08/20 11:29 PM
                        An elaborate theory of why AMD64 succeededanon2013/08/21 02:09 AM
                          An elaborate theory of why AMD64 succeeded2013/08/21 04:12 AM
                            An elaborate theory of why AMD64 succeededbakaneko2013/08/21 04:39 AM
                              An elaborate theory of why AMD64 succeeded2013/08/21 05:20 AM
                                An elaborate theory of why AMD64 succeededbakaneko2013/08/21 05:41 AM
                                  An elaborate theory of why AMD64 succeeded2013/08/21 06:47 AM
                                    An elaborate theory of why AMD64 succeededbakaneko2013/08/21 07:26 AM
                            An elaborate theory of why AMD64 succeededanon2013/08/21 05:40 AM
                              An elaborate theory of why AMD64 succeeded2013/08/21 06:47 AM
                                Mod? (NT)anon2013/08/21 07:28 AM
                                  An elaborate theory of why AMD64 succeeded2013/08/21 08:34 AM
                                    An elaborate theory of why AMD64 succeededanon2013/08/21 09:04 AM
                                OK, let's try and keep this productiveDavid Kanter2013/08/21 01:27 PM
                                  OK, let's try and keep this productivePatrick Chase2013/08/21 11:42 PM
                                    OK, let's try and keep this productiveGabriele Svelto2013/08/22 02:48 AM
                                    OK, let's try and keep this productivePatrick Chase2013/08/22 09:03 AM
                                  OK, let's try and keep this productiveanon2013/08/22 12:47 AM
                            An elaborate theory of why AMD64 succeededCarlie Coats2013/08/21 06:31 AM
                              An elaborate theory of why AMD64 succeeded2013/08/21 06:59 AM
                              An elaborate theory of why AMD64 succeededMichael S2013/08/21 07:15 AM
                                An elaborate theory of why AMD64 succeededCarlie Coats2013/08/21 12:25 PM
                                  switched to write-only mode? (NT)Michael S2013/08/21 01:43 PM
                                  An elaborate theory of why AMD64 succeededrwessel2013/08/21 01:53 PM
                                  An elaborate theory of why AMD64 succeededMichael S2013/08/21 02:13 PM
                                  An elaborate theory of why AMD64 succeededBrett2013/08/21 06:25 PM
                                    An elaborate theory of why AMD64 succeededCarlie Coats2013/08/22 04:36 AM
                            An elaborate theory of why AMD64 succeededanon2013/08/21 06:46 AM
                              An elaborate theory of why AMD64 succeeded2013/08/21 07:07 AM
                                An elaborate theory of why AMD64 succeededanon2013/08/21 07:27 AM
                            An elaborate theory of why AMD64 succeededVincent Diepeveen2013/08/31 02:24 AM
                          An elaborate theory of why AMD64 succeededCarlie Coats2013/08/21 06:24 AM
                            An elaborate theory of why AMD64 succeededMichael S2013/08/21 07:03 AM
                              An elaborate theory of why AMD64 succeededCarlie Coats2013/08/21 12:27 PM
                        An elaborate theory of why AMD64 succeededStubabe2013/08/21 09:43 AM
                          An elaborate theory of why AMD64 succeededMichael S2013/08/21 10:02 AM
                            An elaborate theory of why AMD64 succeededStubabe2013/08/21 10:37 AM
                              An elaborate theory of why AMD64 succeededKlimax2013/08/21 11:09 AM
                                An elaborate theory of why AMD64 succeededStubabe2013/08/21 04:27 PM
                            An elaborate theory of why AMD64 succeededLinus Torvalds2013/08/21 10:40 AM
                              An elaborate theory of why AMD64 succeededYuhong Bao2013/08/22 01:11 AM
                                An elaborate theory of why AMD64 succeededEduardoS2013/08/22 03:25 AM
                                  An elaborate theory of why AMD64 succeedednone2013/08/22 04:29 AM
                                  An elaborate theory of why AMD64 succeededRicardo B2013/08/22 06:06 AM
                            An elaborate theory of why AMD64 succeededEduardoS2013/08/21 11:58 AM
                            An elaborate theory of why AMD64 succeededanon2013/08/22 01:25 AM
                              An elaborate theory of why AMD64 succeededEduardoS2013/08/22 03:29 AM
                          An elaborate theory of why AMD64 succeededSymmetry2013/08/21 10:51 AM
                            An elaborate theory of why AMD64 succeededStubabe2013/08/21 04:22 PM
                        An elaborate theory of why AMD64 succeededDan Fay2013/08/21 01:43 PM
                        No elaborate theories requiredDoug S2013/08/21 05:18 PM
                          No elaborate theories requiredGabriele Svelto2013/08/22 05:28 AM
                            No elaborate theories requiredDoug S2013/08/22 10:03 AM
                          No elaborate theories requiredDavid Hess2013/08/22 02:38 PM
                            No elaborate theories requiredDoug S2013/08/22 03:30 PM
                              No elaborate theories requiredDavid Hess2013/08/23 09:42 AM
                                No elaborate theories requiredanon2013/08/24 02:09 AM
                                  No elaborate theories requiredDavid Hess2013/08/24 05:36 PM
                        An very bad theory of why AMD64 succeededEric Bron2013/08/23 02:50 AM
                          An very bad theory of why AMD64 succeededEduardoS2013/08/23 04:36 AM
                      How about dropping x87?David Kanter2013/08/21 10:46 AM
                        How about dropping x87?Michael S2013/08/21 11:01 AM
                          How about dropping x87?David Kanter2013/08/21 01:34 PM
                            How about dropping x87?anonymou52013/08/21 06:27 PM
                              How about dropping x87?David Kanter2013/08/22 01:02 AM
                                How about dropping x87?TREZA2013/08/22 03:40 AM
                                How about dropping x87?rwessel2013/08/22 12:41 PM
                        Initial 64-bit ARM *can* run older 32-bit ARM codeLinus Torvalds2013/08/20 08:15 PM
                          Initial 64-bit ARM *can* run older 32-bit ARM codeRonald Maas2013/08/21 12:38 PM
                            Initial 64-bit ARM *can* run older 32-bit ARM codebakaneko2013/08/21 01:17 PM
                            Initial 64-bit ARM *can* run older 32-bit ARM codeMichael S2013/08/21 02:30 PM
                            Initial 64-bit ARM *can* run older 32-bit ARM codemas2013/08/21 06:10 PM
                              Initial 64-bit ARM *can* run older 32-bit ARM codenone2013/08/21 08:25 PM
                                Initial 64-bit ARM *can* run older 32-bit ARM codemas2013/08/22 01:19 AM
                                  Initial 64-bit ARM *can* run older 32-bit ARM codeanon2013/08/22 01:53 AM
                                    Initial 64-bit ARM *can* run older 32-bit ARM codemas2013/08/22 02:07 AM
                                      Initial 64-bit ARM *can* run older 32-bit ARM codemas2013/08/22 02:11 AM
                                        Initial 64-bit ARM *can* run older 32-bit ARM codenone2013/08/22 02:30 AM
                                          Initial 64-bit ARM *can* run older 32-bit ARM codemas2013/08/22 03:34 AM
                                            Initial 64-bit ARM *can* run older 32-bit ARM codenone2013/08/22 06:04 AM
                                              Initial 64-bit ARM *can* run older 32-bit ARM codemas2013/08/22 07:56 AM
                                  Initial 64-bit ARM *can* run older 32-bit ARM codenone2013/08/22 02:09 AM
                                    Initial 64-bit ARM *can* run older 32-bit ARM codemas2013/08/22 02:26 AM
                                      Initial 64-bit ARM *can* run older 32-bit ARM codenone2013/08/22 02:38 AM
                                        Initial 64-bit ARM *can* run older 32-bit ARM codemas2013/08/22 02:52 AM
                                          Initial 64-bit ARM *can* run older 32-bit ARM codenone2013/08/22 03:13 AM
                                  Initial 64-bit ARM *can* run older 32-bit ARM coderwessel2013/08/22 01:06 PM
                                    Initial 64-bit ARM *can* run older 32-bit ARM codemas2013/08/22 01:42 PM
                                      Initial 64-bit ARM *can* run older 32-bit ARM coderwessel2013/08/22 07:06 PM
                                        Initial 64-bit ARM *can* run older 32-bit ARM codeMichael S2013/08/23 04:53 AM
                                          Initial 64-bit ARM *can* run older 32-bit ARM coderwessel2013/08/23 09:14 PM
                                        Initial 64-bit ARM *can* run older 32-bit ARM codeTREZA2013/08/23 12:53 PM
                                    Initial 64-bit ARM *can* run older 32-bit ARM codeMichael S2013/08/22 02:15 PM
                                      Initial 64-bit ARM *can* run older 32-bit ARM coderwessel2013/08/22 07:10 PM
                                        Initial 64-bit ARM *can* run older 32-bit ARM codeMichael S2013/08/23 04:38 AM
                                        Initial 64-bit ARM *can* run older 32-bit ARM codeEugene Nalimov2013/08/23 01:00 PM
                                          Initial 64-bit ARM *can* run older 32-bit ARM codeanon2013/08/24 02:11 AM
                                            Initial 64-bit ARM *can* run older 32-bit ARM codeEugene Nalimov2013/08/26 02:35 PM
                                          Initial 64-bit ARM *can* run older 32-bit ARM codevvid2013/08/28 09:36 AM
                                            Initial 64-bit ARM *can* run older 32-bit ARM codeEugene Nalimov2013/08/29 09:51 AM
                                              Initial 64-bit ARM *can* run older 32-bit ARM codeMax2013/08/30 01:12 PM
                                                Initial 64-bit ARM *can* run older 32-bit ARM codeLinus Torvalds2013/08/30 04:13 PM
                                                  Separate instruction and data registers BAD or NOT, m68kBrett2013/08/30 06:42 PM
                                                    Separate instruction and data registers BAD or NOT, m68kanon2013/08/30 07:29 PM
                                                      Trade-offs are not constantPaul A. Clayton2013/08/31 10:33 AM
                                                      Separate instruction and data registers BAD or NOT, m68kMichael S2013/08/31 11:42 AM
                                                      Separate instruction and data registers BAD or NOT, m68kBrett2013/08/31 02:51 PM
                                                    Separate instruction and data registers BAD or NOT, m68ksomeone2013/08/30 11:15 PM
                                                      Separate instruction and data registers BAD or NOT, m68kBrett2013/08/31 02:54 PM
                                                      Separate instruction and data registers BAD or NOT, m68kBrett2013/08/31 03:08 PM
                                                        Separate instruction and data registers BAD or NOT, m68kanon2013/08/31 07:43 PM
                                                          Separate instruction and data registers BAD or NOT, m68kMichael S2013/09/01 01:07 AM
                                                            Partitioned register sets BAD or NOTBrett2013/09/01 02:03 AM
                                                              Partitioned register sets BAD or NOTPatrick Chase2013/09/01 10:38 AM
                                                                Embedded VLIWPaul A. Clayton2013/09/01 12:54 PM
                                                                  Embedded VLIWPatrick Chase2013/09/01 03:14 PM
                                                                    Thanks for the additional info (NT)Paul A. Clayton2013/09/01 08:54 PM
                                                                Partitioned register sets BAD or NOTPatrick Chase2013/09/02 12:06 AM
                                                                Stop bitsBrett2013/09/02 02:24 PM
                                                                  Stop bitsPatrick Chase2013/09/02 03:00 PM
                                                            Separate instruction and data registers BAD or NOT, m68kanon2013/09/01 10:12 AM
                                                    Separate instruction and data registers BAD or NOT, m68kRichardC2013/08/31 06:03 AM
                                                    Separate instruction and data registers BAD or NOT, m68kMegol2013/09/04 07:04 AM
                                                      Separate instruction and data registers BAD or NOT, m68kBrett2013/09/04 11:27 PM
                                                        Separate instruction and data registers BAD or NOT, m68kMegol2013/09/05 07:32 AM
                                                          Separate instruction and data registers BAD or NOT, m68kgallier22013/09/05 09:37 AM
                                                            Separate instruction and data registers BAD or NOT, m68kMegol2013/09/05 10:48 AM
                                                          Separate instruction and data registers BAD or NOT, m68kJouni Osmala2013/09/05 11:18 AM
                                                            Separate instruction and data registers BAD or NOT, m68kMegol2013/09/06 05:17 AM
                                                            John Mashey post is sorta relevant ...Mark Roulo2013/09/06 09:30 AM
                                                              John Mashey post is sorta relevant ...Megol2013/09/06 11:59 AM
                                                                John Mashey post is sorta relevant ...Brett2013/09/06 06:32 PM
                                                                  John Mashey post is sorta relevant ...Eugene Nalimov2013/09/08 11:10 AM
                                                                    John Mashey post is sorta relevant ...Brett2013/09/08 02:54 PM
                                                                      John Mashey post is sorta relevant ...David Kanter2013/09/08 05:06 PM
                                                                        John Mashey post is sorta relevant ...Brett2013/09/08 07:48 PM
                                                                          John Mashey post is sorta relevant ...Jouni Osmala2013/09/09 06:26 AM
                                                                            John Mashey post is sorta relevant ...Brett2013/09/13 04:51 PM
                                                                              John Mashey post is sorta relevant ...Megol2013/09/14 09:56 AM
                                                                      John Mashey post is sorta relevant ...Eugene Nalimov2013/09/08 06:59 PM
                                                                        John Mashey post is sorta relevant ...Brett2013/09/08 07:55 PM
                                                                        Renesas RX vs x86/68K/VAXMichael S2013/09/09 06:15 AM
                                                  Initial 64-bit ARM *can* run older 32-bit ARM codeEduardoS2013/08/31 11:09 AM
                                                    Initial 64-bit ARM *can* run older 32-bit ARM codeLinus Torvalds2013/08/31 11:34 AM
                                                      Initial 64-bit ARM *can* run older 32-bit ARM codeEduardoS2013/08/31 12:26 PM
                                                        Initial 64-bit ARM *can* run older 32-bit ARM codeLinus Torvalds2013/08/31 02:12 PM
                                                          Initial 64-bit ARM *can* run older 32-bit ARM codeEduardoS2013/08/31 03:49 PM
                                                    Initial 64-bit ARM *can* run older 32-bit ARM codegallier22013/08/31 12:15 PM
                              Initial 64-bit ARM *can* run older 32-bit ARM codeRonald Maas2013/08/21 11:54 PM
                                Initial 64-bit ARM *can* run older 32-bit ARM codemas2013/08/22 01:10 AM
                                Initial 64-bit ARM *can* run older 32-bit ARM codeMichael S2013/08/22 02:47 AM
                                  Initial 64-bit ARM *can* run older 32-bit ARM codemas2013/08/22 03:17 AM
                              Initial 64-bit ARM *can* run older 32-bit ARM codeGabriele Svelto2013/08/22 07:53 AM
                      Initial 64-bit ARM *can* run older 32-bit ARM codeMr. Camel2013/08/23 06:33 AM
                        Initial 64-bit ARM *can* run older 32-bit ARM codeMichael S2013/08/23 07:03 AM
                        Initial 64-bit ARM *can* run older 32-bit ARM codeEduardoS2013/08/23 07:39 AM
                          Initial 64-bit ARM *can* run older 32-bit ARM codeRonald Maas2013/08/23 10:13 AM
                            Initial 64-bit ARM *can* run older 32-bit ARM codeEduardoS2013/08/23 10:28 AM
                        Initial 64-bit ARM *can* run older 32-bit ARM coderwessel2013/08/23 10:14 PM
              How does Power compare to ARM / MIPS?EduardoS2013/08/15 08:35 PM
                How does Power compare to ARM / MIPS?Carlie Coats2013/08/21 12:31 PM
              Mixing 32b and 64b code in a kernelDoug S2013/08/16 09:50 AM
                LPAE is here now!Mark Roulo2013/08/16 10:45 AM
                  LPAE is here now!Patrick Chase2013/08/16 12:29 PM
                    LPAE is here now!anon2013/08/16 06:11 PM
                Mixing 32b and 64b code in a kernelRicardo B2013/08/17 10:52 AM
                  Mixing 32b and 64b code in a kernelLinus Torvalds2013/08/17 11:09 AM
                    Mixing 32b and 64b code in a kernelMax2013/08/18 02:57 PM
                Mixing 32b and 64b code in a kernelCarlie Coats2013/08/21 12:46 PM
            How does Power compare to ARM / MIPS?Ungo2013/08/15 12:59 PM
              How does Power compare to ARM / MIPS?Doug S2013/08/15 07:39 PM
                How does Power compare to ARM / MIPS?Patrick Chase2013/08/15 08:04 PM
                  How does Power compare to ARM / MIPS?Patrick Chase2013/08/15 09:01 PM
                How does Power compare to ARM / MIPS?Jukka Larja2013/08/16 06:54 AM
          How does Power compare to ARM / MIPS?Patrick Chase2013/08/15 07:29 PM
            How does Power compare to ARM / MIPS?Brett2013/08/16 11:34 PM
              How does Power compare to ARM / MIPS?Doug S2013/08/17 11:18 AM
                How does Power compare to ARM / MIPS?Brett2013/08/17 11:35 AM
                  16 vs 32 general purpose registersMark Roulo2013/08/17 11:40 AM
                    16 vs 32 general purpose registersMichael S2013/08/17 02:55 PM
                      16 vs 32 general purpose registersPatrick Chase2013/08/18 04:55 AM
                  How does Power compare to ARM / MIPS?EduardoS2013/08/17 05:30 PM
                How does Power compare to ARM / MIPS?Patrick Chase2013/08/17 12:49 PM
                  > 32 general purpose registersMark Roulo2013/08/17 01:58 PM
                    > 32 general purpose registersMichael S2013/08/17 02:25 PM
                    > 32 general purpose registersPatrick Chase2013/08/17 03:11 PM
                      > 32 general purpose registersExophase2013/08/18 10:17 AM
                        IIRC, AArch32 registers (shadow registers et al.) map onto AArch64 registers (NT)Paul A. Clayton2013/08/18 02:51 PM
                          IIRC, AArch32 registers (shadow registers et al.) map onto AArch64 registersExophase2013/08/18 09:28 PM
                            IIRC, AArch32 registers (shadow registers et al.) map onto AArch64 registersMichael S2013/08/19 02:17 AM
                              IIRC, AArch32 registers (shadow registers et al.) map onto AArch64 registersExophase2013/08/19 08:42 AM
                    > 32 general purpose registersDoug S2013/08/18 12:21 AM
        How does Power compare to ARM / MIPS?Brett2013/08/17 11:20 AM
          How does Power compare to ARM / MIPS?Gabriele Svelto2013/08/18 02:12 PM
            How does Power compare to ARM / MIPS?Exophase2013/08/18 09:35 PM
          How does Power compare to ARM / MIPS?mas2013/08/20 03:29 PM
      How does Power compare to ARM / MIPS?mas2013/08/20 03:15 PM
        How does Power compare to ARM / MIPS?none2013/08/20 03:31 PM
          How does Power compare to ARM / MIPS?mas2013/08/20 04:08 PM
        How does Power compare to ARM / MIPS?Linus Torvalds2013/08/20 03:49 PM
          How does Power compare to ARM / MIPS?mas2013/08/20 05:53 PM
            How does Power compare to ARM / MIPS?Linus Torvalds2013/08/20 07:52 PM
              How does Power compare to ARM / MIPS?mas2013/08/21 12:21 AM
                How does Power compare to ARM / MIPS?Michael S2013/08/21 06:17 AM
                  How does Power compare to ARM / MIPS?mas2013/08/21 07:05 AM
                    How does Power compare to ARM / MIPS?Michael S2013/08/21 07:27 AM
                      How does Power compare to ARM / MIPS?none2013/08/21 07:53 AM
                        How does Power compare to ARM / MIPS?Michael S2013/08/21 08:02 AM
                          XScale wasn't synthesizablePatrick Chase2013/08/21 12:36 PM
                            XScale wasn't synthesizableMichael S2013/08/21 02:00 PM
                              XScale wasn't synthesizablePatrick Chase2013/08/21 03:02 PM
                              XScale wasn't synthesizablePatrick Chase2013/08/21 03:11 PM
                      How does Power compare to ARM / MIPS?mas2013/08/21 08:45 AM
                  How does Power compare to ARM / MIPS?mas2013/08/22 04:08 AM
            How does Power compare to ARM / MIPS?Doug S2013/08/20 10:47 PM
              How does Power compare to ARM / MIPS?Michael S2013/08/21 07:32 AM
              How does Power compare to ARM / MIPS?Patrick Chase2013/08/21 08:37 AM
              How does Power compare to ARM / MIPS?Patrick Chase2013/08/21 11:45 AM
                How does Power compare to ARM / MIPS?EduardoS2013/08/21 12:02 PM
                  How does Power compare to ARM / MIPS?Patrick Chase2013/08/21 12:27 PM
                    How does Power compare to ARM / MIPS?Patrick Chase2013/08/21 12:47 PM
                      Is simplistic prediction still prediction?Paul A. Clayton2013/08/21 03:59 PM
                        Is simplistic prediction still prediction?Patrick Chase2013/08/22 12:16 PM
                          More like always not-taken, but yeah lame prediction (NT)Paul A. Clayton2013/08/22 01:27 PM
                      How does Power compare to ARM / MIPS?Linus Torvalds2013/08/21 04:25 PM
                        Athlon did something similar (but no dirty special case)Paul A. Clayton2013/08/21 07:47 PM
                          Athlon did something similar (but no dirty special case)Patrick Chase2013/08/22 12:13 PM
                        How does Power compare to ARM / MIPS?Patrick Chase2013/08/22 11:56 AM
                        How does Power compare to ARM / MIPS?Patrick Chase2013/08/22 12:29 PM
                          How does Power compare to ARM / MIPS?Linus Torvalds2013/08/22 01:40 PM
                    How does Power compare to ARM / MIPS?anon2013/08/22 12:45 AM
                      How does Power compare to ARM / MIPS?Niels Jørgen Kruse2013/08/22 02:38 AM
                        How does Power compare to ARM / MIPS?Michael S2013/08/22 02:58 AM
                      How does Power compare to ARM / MIPS?Patrick Chase2013/08/22 08:44 AM
                        Are you sure P4 used IP-based way prediction?Paul A. Clayton2013/08/22 02:04 PM
                          Are you sure P4 used IP-based way prediction?Patrick Chase2013/08/22 03:40 PM
                        How does Power compare to ARM / MIPS?Patrick Chase2013/08/24 10:19 AM
                          How does Power compare to ARM / MIPS?Anon2013/08/25 01:15 AM
                            How does Power compare to ARM / MIPS?Patrick Chase2013/08/25 07:49 PM
                              Replay tornadoes? Paul A. Clayton2013/08/25 08:43 PM
                        How does Power compare to ARM / MIPS?anon2013/08/25 04:22 PM
                          How does Power compare to ARM / MIPS?anonymou52013/08/25 04:35 PM
                            I have the date and topic for a P4 Dcache postPaul A. Clayton2013/08/25 08:34 PM
                              Obviously that should have been "anonymous (no@spam.com)" (NT)Paul A. Clayton2013/08/25 08:45 PM
                              I have the date and topic for a P4 Dcache postPatrick Chase2013/08/26 09:04 AM
                                Could you provide a link?Paul A. Clayton2013/08/26 10:32 AM
                                  Could you provide a link?Patrick Chase2013/08/26 10:43 AM
                                    Thanks. I had a text copy without url.Paul A. Clayton2013/08/26 03:20 PM
                                      Thanks. I had a text copy without url.Patrick Chase2013/08/26 06:53 PM
                            How does Power compare to ARM / MIPS?anon2013/08/25 09:37 PM
                              How does Power compare to ARM / MIPS?David Kanter2013/08/26 02:31 PM
                              How does Power compare to ARM / MIPS?Patrick Chase2013/08/27 05:11 PM
                                I think even later P4s used width pipelining (NT)Paul A. Clayton2013/08/27 06:20 PM
    How does Power compare to ARM / MIPS?Vincent Diepeveen2013/08/26 05:04 AM
Reply to this Topic
Name:
Email:
Topic:
Body: No Text
How do you spell tangerine? 🍊