Windows and kernel time

By: Linus Torvalds (torvalds.delete@this.linux-foundation.org), November 27, 2020 12:00 pm
Room: Moderated Discussions
Etienne Lorrain (etienne_lorrain.delete@this.yahoo.fr) on November 27, 2020 1:21 am wrote:
>
> Someone ever tried to replace (Linux) page zeroing by the processor, by reading a NVME page
> from a file pre-written with all zero - should be quite fast with NVME on PCIe 3 or 4?

That would be horrendous.

Memory copying and clearing is a big deal, but using DMA to do it is insane and completely the wrong thing to do.

Not to say it hasn't historically been done. Several times, in fact. You wouldn't want to use NVMe or anything like that - you'd use dedicated DMA controllers. A lot of them have historically had various non-device uses like copying and clearing memory.

And in that historical setting that has even made sense on some hardware - particularly on machines with weak CPU's and special IO hardware.

People have even tried to do it in Linux, both with DMA hardware and with just idle CPU cycles. Take free memory, pre-zero it in the background, and when you allocate it, you don't need to spend any more time zeroing it.

It's complete and utter garbage in any sane modern setup, for a very simple reason: caches.

The fact is, the CPU is going to have a lot better memory subsystem than any IO device does on any sanely designed machine. And even if that wasn't true, any external device - whether a dedicated DMA controller or some IO device that can seed zeroes - is going to wreak hell on the target CPU caches if you try to zero it outside the core.

The pre-zeroing of pages actually made kernel profiles look better in some cases. But it made actual performance worse, because all it resulted in was lots more cache misses in user space because now those nicely pre-zeroed pages were cold in the cache.

Pre-zeroing basically fundamentally destroys temporal locality, and is thus fundamentally wrong in any system that has effective caches. Because locality matters. A lot.

So no, zeroing with DMA will never ever make sense unless you have some very special hardware (perhaps something like a CPU with basically no caches, because it's basically just dedicated a DSP and all the smarts is in the IO paths - think network controllers or similar).

Now, I do think that dedicated hardware makes sense - but not external to the CPU. Dedicated memory clearing hardware that is integrated on the CPU and can work together with the caches sounds perfectly sane to me.

It could be something like special bits in the cache directory that say "this line is clear in memory" so that you don't even need to read it back in.

Or it could be special DRAM commands and replies for writing and reading blocks of zeroes more efficiently.

Things like that can make tons of sense - they can work together with the caches, rather than work against them. They can make caches effectively larger, or make the cache eviction or fill be cheaper.

And yes, it's one of the reasons I believe that special memset/memcpy instructions make sense. Because the size of the copy/clear can be a very clear hint to hardware how to do cache replacement, and it could be useful for the above kind of dedicated logic too.

But it absolutely has to be driven by the CPU. Not some kind of external IO entity.

Linus
< Previous Post in ThreadNext Post in Thread >
TopicPosted ByDate
The macOS performance deficitGabriele Svelto2020/11/22 03:02 PM
  The macOS performance deficitrpg2020/11/22 09:45 PM
    The macOS performance deficitChester2020/11/22 10:20 PM
    It's not really a fair fightanon22020/11/22 11:24 PM
      It's not really a fair fightGabriele Svelto2020/11/22 11:30 PM
        WSLanon2020/11/23 01:21 AM
          WSLkonrad schwarz2020/11/23 04:49 AM
            WSLMichael S2020/11/23 04:53 AM
              WSLKonrad Schwarz2020/11/25 09:02 AM
                WSLMichael S2020/11/25 09:19 AM
                  Cygwin vs MSYSKonrad Schwarz2020/11/26 02:12 AM
                    Cygwin vs MSYSMichael S2020/11/26 02:55 AM
                      Cygwin vs MSYSKonrad Schwarz2020/11/26 06:44 AM
                      Cygwin vs MSYSHoward Chu2020/11/26 12:15 PM
          WSLWindowsExperience2020/11/23 05:17 AM
            WSLHoward Chu2020/11/24 09:37 AM
        WindowsChester2020/11/24 01:34 AM
          WindowsMichael S2020/11/24 02:22 AM
            WindowsHoward Chu2020/11/24 09:41 AM
              WindowsChester2020/11/24 11:49 PM
                WindowsMichael S2020/11/25 12:26 AM
                  WindowsChester2020/11/25 03:40 PM
                    WindowsMichael S2020/11/26 03:03 AM
                      Windows and kernel timeChester2020/11/27 12:57 AM
                        Windows and kernel timeEtienne Lorrain2020/11/27 01:21 AM
                          Windows and kernel timeAndrey2020/11/27 02:56 AM
                            Windows and kernel timeMichael S2020/11/27 03:34 AM
                              Windows and kernel timeJames2020/11/27 06:35 AM
                                Windows and kernel timeanon32020/11/27 01:02 PM
                                  Windows and kernel timeBrendan2020/11/27 04:39 PM
                                    Windows and kernel timeanon32020/11/27 05:22 PM
                                      Windows and kernel timeBrendan2020/11/27 06:43 PM
                                  Windows and kernel timeGionatan Danti2020/11/28 02:13 PM
                              Windows and kernel timeAndrey2020/11/27 07:56 AM
                                Windows and kernel timeSimon Farnsworth2020/11/27 10:04 AM
                                  Windows and kernel timeanon2020/11/27 01:55 PM
                                  You also avoid bus contentionCarson2020/12/05 02:26 AM
                                    You also avoid bus contentionDavid Hess2020/12/05 05:07 AM
                                      You also avoid bus contentionCarson2020/12/05 09:50 AM
                                        You also avoid bus contentionDavid Hess2020/12/05 05:04 PM
                                Windows and kernel timeKonrad Schwarz2020/12/21 06:45 AM
                            Windows and kernel timeDavid Hess2020/11/27 07:13 PM
                          Windows and kernel timeLinus Torvalds2020/11/27 12:00 PM
                            Windows and kernel timeGionatan Danti2020/11/28 03:05 PM
                              Windows and kernel timeLinus Torvalds2020/11/28 04:18 PM
                                Windows and kernel timeBrendan2020/11/28 08:21 PM
                                  Windows and kernel timeDoug S2020/11/29 08:58 AM
                                    Windows and kernel timeBrendan2020/11/29 07:10 PM
                                      I read the profile wrongChester2020/11/30 11:10 AM
                                      Windows and kernel timeDoug S2020/11/30 11:10 AM
                                Windows and kernel timeJörn Engel2020/11/29 03:47 AM
                                  Windows and kernel timeLinus Torvalds2020/11/29 11:17 AM
                                Thanks for the explanation (NT)Gionatan Danti2020/11/29 04:25 AM
                            Windows and kernel timeGabriele Svelto2020/11/29 12:17 PM
                            Windows and kernel timeEtienne Lorrain2020/11/30 01:19 AM
                              Windows and kernel timeAdrian2020/11/30 04:57 AM
        It's not really a fair fightHoward Chu2020/11/24 09:34 AM
  The macOS performance deficitkonrad schwarz2020/11/23 04:52 AM
    The macOS performance deficitJon Masters2020/11/23 09:14 AM
      The macOS performance deficitsoftware_engineer2020/11/23 10:33 AM
        The macOS performance deficitMaynard Handley2020/11/23 11:03 AM
          The macOS performance deficitanon22020/11/23 04:28 PM
            The macOS performance deficitMaynard Handley2020/11/23 05:31 PM
              The macOS performance deficitanon22020/11/23 07:10 PM
                The macOS performance deficitMaynard Handley2020/11/23 08:53 PM
                  The macOS performance deficitanon22020/11/23 10:41 PM
            The macOS performance deficitGabriele Svelto2020/11/24 02:02 AM
              The macOS performance deficitUngo2020/11/24 03:30 AM
                The macOS performance deficitGabriele Svelto2020/11/24 03:38 AM
                The macOS performance deficitanon22020/11/24 06:37 AM
                  The macOS performance deficitUngo2020/11/24 11:31 AM
                    The macOS performance deficitanon22020/11/24 03:17 PM
                      The macOS performance deficitUngo2020/11/24 07:27 PM
                        The macOS performance deficitanon22020/11/24 09:06 PM
      The macOS performance deficitLinus Torvalds2020/11/23 11:59 AM
        The macOS performance deficitgallier22020/11/23 11:13 PM
          The macOS performance deficitLinus Torvalds2020/11/24 11:40 AM
        The macOS performance deficitJon Masters2020/11/24 01:52 AM
        Microsoft LinuxPaul2020/11/25 02:16 AM
          Microsoft LinuxMichael S2020/11/25 04:29 AM
          Microsoft Linuxm2020/11/25 07:52 AM
          Microsoft LinuxDummond D. Slow2020/11/25 08:46 AM
          Microsoft LinuxRobert Williams2020/11/25 09:49 AM
            Microsoft Linuxm2020/11/25 12:22 PM
              Microsoft LinuxMichael S2020/11/26 02:21 AM
                Microsoft Linuxm2020/11/26 09:54 AM
          Microsoft Linuxjuanrga2020/11/25 01:53 PM
            Microsoft Linuxm2020/11/25 10:02 PM
              Microsoft Linuxgpd2020/11/26 06:05 AM
      The macOS performance deficitGabriele Svelto2020/11/23 01:03 PM
        The macOS performance deficitRicardo B2020/11/29 06:31 PM
          The macOS performance deficitGionatan Danti2020/11/30 12:05 AM
            The macOS performance deficitRicardo B2020/11/30 12:35 AM
              The macOS performance deficitJacob Marley2020/11/30 12:45 AM
                The macOS performance deficitRicardo B2020/11/30 01:08 AM
                  The macOS performance deficitGionatan Danti2020/11/30 01:22 AM
            The macOS performance deficitEtienne Lorrain2020/11/30 03:08 AM
              The macOS performance deficitGionatan Danti2020/11/30 04:47 AM
  The macOS performance deficitI_vs2020/11/23 04:58 AM
    The macOS performance deficitGabriele Svelto2020/11/23 05:36 AM
      The macOS performance deficitI_vs2020/11/23 06:06 AM
        What is the disk performance of each system? (NT)Anon2020/11/23 06:29 AM
          What is the disk performance of each system?I_vs2020/11/23 09:29 AM
        The macOS performance deficitDummond D. Slow2020/11/23 07:24 AM
          The macOS performance deficitI_vs2020/11/23 09:39 AM
            The macOS performance deficitJukka Larja2020/11/24 06:37 AM
            The macOS performance deficitHoward Chu2020/11/24 09:58 AM
              The macOS performance deficitI_vs2020/11/24 11:22 AM
            The macOS performance deficitAdrian2020/11/24 10:27 AM
          The macOS performance deficitMichael S2020/11/23 11:12 AM
        The macOS performance deficitGabriele Svelto2020/11/23 12:59 PM
  The macOS performance deficitDoug S2020/11/23 11:58 AM
    The macOS performance deficitLinus Torvalds2020/11/23 12:05 PM
      The macOS performance deficitm2020/11/26 11:11 AM
        Process Creation and MacOSRob Thorpe2020/11/27 10:45 AM
          Process Creation and MacOSNksingh2020/11/28 04:23 PM
            Process Creation and MacOSFoo_2020/11/29 03:01 AM
              Process Creation and MacOSnksingh2020/11/29 09:15 PM
            Interesting, looks like I was wrong on Windows tooRob Thorpe2020/11/30 07:42 AM
              I meant to put (NT) in that title. And this one. (NT)Rob Thorpe2020/11/30 07:44 AM
          Process Creation and MacOSLouis Gerbarg2020/11/29 10:41 AM
            Process Creation and MacOSGabriele Svelto2020/11/29 12:09 PM
              Process Creation and MacOSLouis Gerbarg2020/11/29 05:23 PM
                Process Creation and MacOSGabriele Svelto2020/11/30 01:05 PM
                  Process Creation and MacOSLouis Gerbarg2020/11/30 03:19 PM
                  Process Creation and MacOSgallier22020/12/01 12:25 AM
                    Process Creation and MacOSGabriele Svelto2020/12/01 01:56 AM
                    Process Creation and MacOSFoo_2020/12/01 12:30 PM
            That's informative (NT).Rob Thorpe2020/11/30 07:43 AM
          Process Creation and MacOSnoko2020/11/29 11:12 PM
    The macOS performance deficitGabriele Svelto2020/11/23 12:56 PM
      The macOS performance deficitanon22020/11/23 03:59 PM
      The macOS performance deficitI_vs2020/11/24 11:40 AM
        The macOS performance deficitMaynard Handley2020/11/24 02:06 PM
          The macOS performance deficitanon22020/11/24 03:46 PM
            The macOS performance deficitMaynard Handley2020/11/24 04:24 PM
              The macOS performance deficitanon22020/11/24 05:43 PM
                The macOS performance deficitMaynard Handley2020/11/24 06:04 PM
                  The macOS performance deficitanon22020/11/24 06:57 PM
                    The macOS performance deficitBrett2020/11/24 07:20 PM
                      The macOS performance deficitanon22020/11/24 09:22 PM
                  The macOS performance deficitJörn Engel2020/11/25 03:31 AM
              The macOS performance deficitGionatan Danti2020/11/25 10:26 AM
          The macOS performance deficitI_vs2020/11/24 11:12 PM
            The macOS performance deficitanon22020/11/26 01:50 AM
    The macOS performance deficitAndrey2020/11/26 04:24 AM
  The macOS performance deficitBrett2020/11/24 08:01 PM
    The macOS performance deficitMaynard Handley2020/11/24 09:09 PM
    Sour grapes (NT)anon22020/11/24 09:28 PM
    The macOS performance deficitGabriele Svelto2020/11/25 05:15 AM
    The macOS performance deficitAndrey2020/11/26 05:08 AM
      The macOS performance deficitBrett2020/11/26 11:29 AM
        The macOS performance deficitAndrey2020/11/26 12:33 PM
          The macOS performance deficitMaynard Handley2020/11/26 01:02 PM
            The macOS performance deficitAndrey2020/11/26 01:41 PM
              The macOS performance deficitrwessel2020/11/26 10:43 PM
              The macOS performance deficitJames2020/11/27 02:06 AM
            The macOS performance deficitGabriele Svelto2020/11/26 03:08 PM
          The macOS performance deficitBrett2020/11/26 04:11 PM
            The macOS performance deficitDummond D. Slow2020/11/26 05:16 PM
              The macOS performance deficitBrett2020/11/27 12:56 PM
                The macOS performance deficitMaynard Handley2020/11/27 02:32 PM
                  The macOS performance deficitJukka Larja2020/11/27 09:02 PM
                    The macOS performance deficitMaynard Handley2020/11/28 10:46 AM
                      The macOS performance deficitDummond D. Slow2020/11/28 12:09 PM
                      The macOS performance deficitsoftware_engineer2020/11/28 01:35 PM
                        The macOS performance deficitMaynard Handley2020/11/28 03:20 PM
                          The macOS performance deficitJukka Larja2020/11/28 09:09 PM
                            The macOS performance deficitMaynard Handley2020/11/28 09:27 PM
                              The macOS performance deficitJukka Larja2020/11/28 11:29 PM
                          The macOS performance deficitsoftware_engineer2020/11/29 12:56 AM
                            The macOS performance deficitMaynard Handley2020/11/29 11:29 AM
                      The macOS performance deficitJukka Larja2020/11/28 09:18 PM
                      The macOS performance deficitJames2020/11/29 04:02 AM
                        The macOS performance deficitFoo_2020/11/29 05:12 AM
                          The macOS performance deficitFoo_2020/11/29 05:18 AM
                            The macOS performance deficitMaynard Handley2020/11/29 11:35 AM
            The macOS performance deficitanon22020/11/26 05:59 PM
              The macOS performance deficitBrett2020/11/27 01:18 PM
                The macOS performance deficitanon22020/11/27 03:13 PM
            The macOS performance deficitAndrey2020/11/27 03:25 AM
              The macOS performance deficitBrett2020/11/27 01:49 PM
                The macOS performance deficitLinus Torvalds2020/11/28 11:16 AM
                  The macOS performance deficitBrett2020/11/28 06:44 PM
                    The macOS performance deficitanon22020/11/29 12:35 AM
                      The macOS performance deficitBrett2020/11/29 11:31 AM
                        The macOS performance deficitGabriele Svelto2020/11/29 12:00 PM
                          The macOS performance deficitBrett2020/11/29 01:09 PM
                            The macOS performance deficitMaynard Handley2020/11/29 08:57 PM
                              The macOS performance deficitanon32020/11/29 09:37 PM
                              The macOS performance deficitGionatan Danti2020/11/29 11:59 PM
                                The macOS performance deficitDummond D. Slow2020/11/30 08:00 AM
                                  The macOS performance deficitMaynard Handley2020/11/30 09:36 AM
                                    The macOS performance deficitGionatan Danti2020/11/30 10:12 AM
                                      The macOS performance deficitMaynard Handley2020/11/30 08:21 PM
                                        The macOS performance deficitBrett2020/11/30 11:17 PM
                                        The macOS performance deficitGionatan Danti2020/12/01 09:34 AM
                                          The macOS performance deficitMaynard Handley2020/12/01 12:03 PM
                                            The macOS performance deficitGionatan Danti2020/12/01 02:38 PM
                                          The macOS performance deficitUngo2020/12/01 03:13 PM
                                            The macOS performance deficitGionatan Danti2020/12/02 03:23 AM
                                              The macOS performance deficitDoug S2020/12/02 10:38 AM
                                                The macOS performance deficitGionatan Danti2020/12/03 02:23 AM
                                                  The macOS performance deficitDoug S2020/12/03 11:42 AM
                                                    The macOS performance deficitGionatan Danti2020/12/03 12:01 PM
                                                      The macOS performance deficitDoug S2020/12/03 02:37 PM
                                                        The macOS performance deficitDummond D. Slow2020/12/03 05:20 PM
                                                          The macOS performance deficitEtienne Lorrain2020/12/04 01:14 AM
                                                        The macOS performance deficitGionatan Danti2020/12/03 10:53 PM
                                                    The macOS performance deficitDummond D. Slow2020/12/03 05:15 PM
                                                    SDRGJHI4 ?Michael S2020/12/04 02:22 AM
                                                      SDRGJHI4 ?Doug S2020/12/04 08:21 AM
                                                      SDRGJHI4 ?Ungo2020/12/04 10:20 PM
                                              The macOS performance deficitUngo2020/12/02 01:57 PM
                                                The macOS performance deficitRicardo B2020/12/02 05:01 PM
                                          The macOS performance deficitMichael S2020/12/02 12:15 PM
                                            4xMichael S2020/12/02 01:09 PM
                                              4xDoug S2020/12/02 01:40 PM
                                              4xRicardo B2020/12/02 05:16 PM
                                                4xAnon2020/12/02 10:45 PM
                                                  4xAnon2020/12/02 10:47 PM
                                                  4xAndrey2020/12/03 12:01 AM
                                                  4xRicardo B2020/12/03 01:51 AM
                                                    4xAnon2020/12/03 02:00 AM
                                                      4xRicardo B2020/12/03 04:28 AM
                                                        4xAnon2020/12/03 05:25 AM
                                                          4xRicardo B2020/12/03 07:33 AM
                                                            4xAnon2020/12/03 10:34 AM
                                              python v C/C++Michael S2020/12/03 01:42 PM
                                                hw mattersMichael S2020/12/03 03:43 PM
                                                  hw mattersFoo_2020/12/04 02:57 AM
                                                    hw mattersMichael S2020/12/04 03:59 AM
                                                      SSD history mattersAdrian2020/12/04 10:10 AM
                                                  hw mattersRicardo B2020/12/04 03:23 AM
                                                    hw mattersMichael S2020/12/04 04:14 AM
                                                      hw mattersRicardo B2020/12/04 04:58 AM
                                                  hw mattersGionatan Danti2020/12/04 03:38 AM
                                                    hw mattersMichael S2020/12/04 04:33 AM
                                                      hw mattersGionatan Danti2020/12/04 08:49 AM
                                                        hw mattersMichael S2020/12/05 09:04 AM
                                                          hw mattersGionatan Danti2020/12/05 10:07 AM
                                                            hw mattersMichael S2020/12/05 10:25 AM
                                                              Win7 Home vs ProMichael S2020/12/07 08:43 AM
                                                                Win7 Home vs ProGionatan Danti2020/12/08 01:04 AM
                                                for MSVC usersMichael S2020/12/04 04:37 AM
                                            The macOS performance deficitGionatan Danti2020/12/03 02:09 AM
                                              The macOS performance deficitJukka Larja2020/12/03 07:31 AM
                                                The macOS performance deficitRicardo B2020/12/03 08:46 AM
                                                  The macOS performance deficitJukka Larja2020/12/03 10:01 AM
                                                    The macOS performance deficitGionatan Danti2020/12/03 12:37 PM
                                                      The macOS performance deficitJukka Larja2020/12/04 06:14 AM
                                                        The macOS performance deficitGionatan Danti2020/12/04 08:51 AM
                                                      The macOS performance deficitUngo2020/12/04 10:45 PM
                                                        The macOS performance deficitJukka Larja2020/12/05 02:11 AM
                                                          The macOS performance deficitMichael S2020/12/05 09:49 AM
                                                            The macOS performance deficitGionatan Danti2020/12/05 10:11 AM
                                                              The macOS performance deficitMichael S2020/12/05 11:00 AM
                                                                The macOS performance deficitGionatan Danti2020/12/05 11:59 AM
                                                                  The macOS performance deficitMichael S2020/12/05 12:22 PM
                                                        The macOS performance deficitGionatan Danti2020/12/05 09:41 AM
                                                          The macOS performance deficitMichael S2020/12/05 09:55 AM
                                                          The macOS performance deficitUngo2020/12/05 09:39 PM
                                                            The macOS performance deficitanon32020/12/05 11:07 PM
                                                              The macOS performance deficitGionatan Danti2020/12/06 01:10 AM
                                                            The macOS performance deficitGionatan Danti2020/12/06 01:04 AM
                                                              The macOS performance deficitUngo2020/12/06 12:24 PM
                                                                The macOS performance deficitLinus Torvalds2020/12/06 02:17 PM
                                                                  The macOS performance deficitUngo2020/12/06 03:28 PM
                                                                  The macOS performance deficitGionatan Danti2020/12/07 02:31 AM
                                                                    The macOS performance deficitLinus Torvalds2020/12/07 11:14 AM
                                                                      The macOS performance deficitGionatan Danti2020/12/07 02:29 PM
                                                                        The macOS performance deficitLinus Torvalds2020/12/08 12:36 PM
                                                                          Linux writebackGionatan Danti2020/12/08 01:23 PM
                                                                            Linux writebackLinus Torvalds2020/12/08 03:57 PM
                                                                              Good points, thanks (NT)Gionatan Danti2020/12/08 11:42 PM
                                                                The macOS performance deficitRicardo B2020/12/06 04:05 PM
                                                            The macOS performance deficitRicardo B2020/12/06 05:43 AM
                                                              The macOS performance deficitRicardo B2020/12/06 05:48 AM
                                                              The macOS performance deficitLinus Torvalds2020/12/06 11:11 AM
                                                                The macOS performance deficitRicardo B2020/12/06 02:57 PM
                                                                  Ext4 performance deficitBrett2020/12/06 05:01 PM
                                                                    Ext4 performance deficitRicardo B2020/12/06 05:36 PM
                                                                      Ext4 performance deficitBrett2020/12/06 06:13 PM
                                                                        Ext4 performance deficitBrett2020/12/06 11:25 PM
                                                                        Ext4 performance deficitGionatan Danti2020/12/07 03:06 AM
                                                                          Ext4 performance deficitBrett2020/12/07 02:12 PM
                                                                            Ext4 performance deficitanonymou52020/12/07 08:04 PM
                                                                            Ext4 performance deficitGionatan Danti2020/12/08 12:59 AM
                                                                              Ext4 performance deficitBrett2020/12/09 01:54 PM
                                                                                Ext4 performance deficitGionatan Danti2020/12/10 12:41 AM
                                                                                  Ext4 performance deficitBrett2020/12/10 12:08 PM
                                                                                    Ext4 performance deficitanon22020/12/10 12:33 PM
                                                                                  Ext4 performance deficitUngo2020/12/10 12:14 PM
                                                                                    Ext4 performance deficitBrett2020/12/10 01:00 PM
                                                                                      Ext4 performance deficitanonymou52020/12/10 03:20 PM
                                                                                        Ext4 performance deficitBrett2020/12/13 12:04 AM
                                                                                          Ext4 performance deficitMichael S2020/12/13 01:29 AM
                                                                                          Ext4 performance deficitanonymou52020/12/13 02:46 AM
                                                                                          Ext4 performance deficitLinus Torvalds2020/12/13 11:30 AM
                                                                                            Ext4 performance deficitMichael S2020/12/13 12:24 PM
                                                                                              Ext4 performance deficitBrett2020/12/13 06:26 PM
                                                                                            Ext4 performance deficitanon2020/12/13 04:58 PM
                                                                                            Ext4 performance deficitFoo_2020/12/14 03:56 AM
                                                                                              Ext4 performance deficitrwessel2020/12/14 06:16 AM
                                                                                            Ext4 performance deficitBrett2020/12/15 04:59 PM
                                                                                              Ext4 performance deficitBrett2020/12/19 04:23 PM
                                                                                                Ext4 performance deficitanon2020/12/19 04:44 PM
                                                                                                  Ext4 performance deficitBrett2020/12/19 07:47 PM
                                                                                                    Ext4 performance deficitMichael S2020/12/19 11:40 PM
                                                                                                      Ext4 performance deficitLinus Torvalds2020/12/20 11:09 AM
                                                                                                      Ext4 performance deficitBrett2020/12/24 06:08 PM
                                                                                                        Ext4 performance deficitMichael S2020/12/25 01:32 AM
                                                                                      Ext4 performance deficitAdrian2020/12/11 01:42 AM
                                                                                        Ext4 performance deficitanon2020/12/11 12:34 PM
                                                                                          Ext4 performance deficitAdrian2020/12/12 02:46 AM
                                                                                    Ext4 performance deficitGionatan Danti2020/12/10 01:06 PM
                                                                            Ext4 performance deficitJörn Engel2020/12/08 04:19 AM
                                                                    Serving NTFS?Michael S2020/12/07 12:32 AM
                                                            The macOS performance deficitgallier22020/12/07 12:50 AM
                                    The macOS performance deficitAndrey2020/11/30 12:14 PM
                                      The macOS performance deficitUngo2020/11/30 02:58 PM
                                        The macOS performance deficitMaynard Handley2020/11/30 05:13 PM
                                          The macOS performance deficitUngo2020/12/01 12:37 AM
                                            The macOS performance deficitMaynard Handley2020/12/01 09:49 AM
                                        The macOS performance deficitAndrey2020/12/01 12:55 AM
                                          The macOS performance deficitGionatan Danti2020/12/01 01:48 AM
                                          The macOS performance deficitAnne O. Nymous2020/12/01 02:10 AM
                                        The macOS performance deficitRicardo B2020/12/01 07:40 AM
                                          The macOS performance deficitUngo2020/12/01 06:03 PM
                                            The macOS performance deficitRicardo B2020/12/02 03:08 AM
                                            The macOS performance deficitDoug S2020/12/02 10:51 AM
                                              The macOS performance deficitMatt Sayler2020/12/02 05:36 PM
                                              The macOS performance deficitGionatan Danti2020/12/03 01:47 AM
                                              The macOS performance deficitLouis Gerbarg2020/12/03 09:32 AM
                                                The macOS performance deficitDoug S2020/12/03 11:51 AM
                                      The macOS performance deficitMaynard Handley2020/11/30 06:21 PM
                                        The macOS performance deficitAndrey2020/12/01 02:03 AM
                                          I take it no one here has any real storage admin experienceDoug S2020/12/01 09:39 AM
                                            I take it no one here has any real storage admin experienceGionatan Danti2020/12/01 09:58 AM
                                            I take it no one here has any real storage admin experienceAndrey2020/12/01 12:40 PM
                                            I take it no one here has any real storage admin experienceDavid Hess2020/12/02 04:03 AM
                                              I take it no one here has any real storage admin experienceDoug S2020/12/02 10:57 AM
                                                I take it no one here has any real storage admin experienceDavid Hess2020/12/02 03:46 PM
                                        The macOS performance deficitSimon Farnsworth2020/12/01 03:50 AM
                                        The macOS performance deficitRicardo B2020/12/01 11:23 AM
                        The macOS performance deficitanon22020/11/29 01:20 PM
                  The macOS performance deficitDoug S2020/11/29 09:18 AM
                    The macOS performance deficitLinus Torvalds2020/11/29 11:03 AM
                      The macOS performance deficitHoward Chu2020/11/30 09:07 AM
                        The macOS performance deficitLinus Torvalds2020/11/30 11:05 AM
                          The macOS performance deficitrwessel2020/11/30 11:54 AM
                          The macOS performance deficitanon2020/11/30 03:05 PM
                          The macOS performance deficitHoward Chu2020/11/30 07:57 PM
                            The macOS performance deficitLinus Torvalds2020/11/30 10:34 PM
                              The macOS performance deficitBrett2020/11/30 11:34 PM
                                The macOS performance deficitBrett2020/12/01 01:47 PM
                                  The macOS performance deficitLinus Torvalds2020/12/01 02:57 PM
                                    The macOS performance deficitPatrick Schlüter aka gallier22020/12/02 07:31 AM
                                    The macOS performance deficitDoug S2020/12/02 11:07 AM
                                      The macOS performance deficitAdrian2020/12/03 02:50 AM
                                        The macOS performance deficitLinus Torvalds2020/12/03 12:28 PM
                                          The macOS performance deficitAdrian2020/12/03 12:40 PM
                                    The macOS performance deficitBrett2020/12/02 02:49 PM
                                The macOS performance deficitDavid Hess2020/12/01 08:17 PM
                              BitKeeperanon2020/12/01 12:03 AM
                                BitKeeperanon2020/12/01 12:28 AM
                                charlatansanon22020/12/01 02:57 AM
                                  charlatansMichael S2020/12/01 04:30 AM
                                    charlatansanon22020/12/01 05:38 AM
                                      charlatansrwessel2020/12/01 06:18 AM
                                      version controlMichael S2020/12/02 11:50 AM
                                        version controlLinus Torvalds2020/12/02 01:18 PM
                                          Cheap commits are a huge git winCarson2020/12/08 02:05 AM
                                        version controlanon22020/12/02 08:43 PM
                                BitKeeperLinus Torvalds2020/12/01 11:35 AM
                                  BitKeeperanon2020/12/01 03:42 PM
                                    BitKeeperanonymou52020/12/01 05:26 PM
                                    Larry? (NT)anon22020/12/01 08:25 PM
                                      Larry McVoy, the lead developer of bitkeeper (NT)Carson2020/12/08 02:07 AM
                              The macOS performance deficitDoug S2020/12/01 09:42 AM
                            The macOS performance deficitrwessel2020/12/01 05:51 AM
                              The macOS performance deficitanon2020/12/01 02:49 PM
                        LMDB transactionsanon2020/11/30 02:58 PM
                          LMDB transactionsHoward Chu2020/11/30 07:29 PM
                            LMDB transactionsanon2020/11/30 11:44 PM
                              LMDB transactionsHoward Chu2020/12/01 12:44 PM
                                LMDB transactionsanon2020/12/01 02:33 PM
                                  LMDB transactionsHoward Chu2020/12/02 08:52 AM
                                    LMDB transactionsHoward Chu2020/12/02 08:55 AM
                                      LMDB transactionsAnon2020/12/02 10:54 AM
                        Fossil SCM (SQLite based) works pretty well (NT)anonymous22020/11/30 03:50 PM
                      The macOS performance deficitAnon2020/12/01 11:39 PM
Reply to this Topic
Name:
Email:
Topic:
Body: No Text
How do you spell avocado?