Physical vs effective write latency

By: Linus Torvalds (torvalds.delete@this.linux-foundation.org), September 11, 2008 9:06 am
Room: Moderated Discussions
Max (max@a.com) on 9/11/08 wrote:
>
>One way that a flash drive could have a lower effective
>write latency than its physical write latency is if writes
>were interruptable.
>
>Say the drive begins a slow write, then gets a read
>request. It pauses the write, does the read, then restarts
>the write.

For all I know, they may already do that. That's what having
multiple commands in flight allows (ATA calls it NCQ, aka
"Native Command Queuing"). However, you missed the point:
it doesn't really help all that much.

The reason it doesn't help all that much is that

- the latency if the individual write matters.

Even if you let other, shorter-latency, operations go
first, the latency of the write is still bad (and in
fact quite possibly got even worse).

NCQ improves the IO throughput of the device (not just
on SSD's, of course - it allows rotational media to
schedule the IO's optimally), but it also tends to make
the worst-case latencies worse even as the
average latency may improve.

And when talking various real-time loads (and the very
important issue of "interactivity" is one such thing),
worst-case latency can sometimes matter a whole lot more
than average latency.

- as mentioned, the queue depth is quite limited.

The command queue is often 16 or 32 entries, and if you
are doing writes, you're often doing them in bunches.
That's exactly because most writes are bufferable, and
when you do synchronous writes, they are almost always
not "single" writes (ie you may be doing a sync on a
file, but that will be all the file data and the meta-
data that goes with it, and then you'd wait synchronously
for that bunch of IO's to all have completed).

IOW, you'd expect that when doing writes, the queue is
often filled. Yes, you could limit the number of queued
writes, but since writes are generally where queueing
helps the most (since they are the ones that are
the most independent), that's going to hurt throughput,
and is pretty complicated anyway.

- Especially for something like a GC event, it's not that
it's a single write command that would be blocked,
it's that all of them end up blocking on GC when you
do end up having a blocking GC happen in the first place.

So if you've filled the queue with writes, they're all
going to be there, and none of them is going to succeed
early, and that read won't get through simply because
the queue is full.

Anyway, regardless of any of the queuing issues - even if
you let reads complete first - it's still going to cause
problems for those synchronous writes. And those synchronous
writes are not at all as uncommon as people think.

They happen for a lot of filesystems for just metadata
updates (ie file create/delete events), and they always
happen when the app asked for them (ie fdatasync() in a DB,
or just fsync() for a mail reader etc).

And yes, many of them do happen for simple everyday apps.
Browsers, mail readers, things like that. Apps where ten
milliseconds is not very noticeable, but half a second is
very noticeable and irritating indeed.

Linus
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TopicPosted ByDate
First Dunnington benchmark resultsMichael S08/19/08 10:54 AM
  First Dunnington benchmark resultsrwessel08/19/08 01:42 PM
    First Dunnington benchmark resultsAaron Apink08/19/08 05:49 PM
      First Dunnington benchmark resultsJoe Chang08/19/08 06:28 PM
        First Dunnington benchmark resultsrwessel08/21/08 09:49 AM
          First Dunnington benchmark resultsJoe Chang08/21/08 03:10 PM
            First Dunnington benchmark resultsrwessel08/21/08 06:42 PM
              First Dunnington benchmark resultsJoe Chang08/21/08 07:12 PM
      First Dunnington benchmark resultsrwessel08/21/08 09:45 AM
        First Dunnington benchmark resultsAaron Spink08/21/08 01:12 PM
          First Dunnington benchmark resultsJoe Chang08/21/08 03:15 PM
    First Dunnington benchmark resultsRichard Cownie08/20/08 02:59 AM
      First Dunnington benchmark resultsAnders Jensen08/20/08 03:26 AM
        +SSDAnders Jensen08/20/08 03:30 AM
        First Dunnington benchmark resultsRichard Cownie08/20/08 11:04 AM
          First Dunnington benchmark resultsslacker08/20/08 12:35 PM
            First Dunnington benchmark resultsDoug Siebert08/20/08 07:54 PM
              First Dunnington benchmark resultsRichard Cownie08/20/08 08:58 PM
                SLC vs. MLCDavid Kanter08/21/08 01:16 AM
                  SLC vs. MLCMatt Sayler08/21/08 06:25 AM
                  SLC vs. MLCRichard Cownie08/21/08 06:32 AM
                    SLC vs. MLCLinus Torvalds08/21/08 08:39 AM
                      SLC vs. MLCMichael S08/21/08 09:07 AM
                        SLC vs. MLCLinus Torvalds08/21/08 09:52 AM
                          SLC vs. MLCMichael S08/21/08 10:35 AM
                            OLTP appliance = mainframe? (NT)Potatoswatter08/21/08 11:44 AM
                              OLTP appliance = HP NonStop?Michael S08/21/08 12:03 PM
                                OLTP applianceJoe Chang08/21/08 03:33 PM
                                  OLTP appliancePotatoswatter08/21/08 03:59 PM
                            SLC vs. MLCAaron Spink08/21/08 01:29 PM
                          SLC vs. MLCDan Downs08/21/08 11:33 AM
                            SLC vs. MLCrwessel08/21/08 12:45 PM
                              SLC vs. MLCDan Downs08/22/08 08:21 AM
                            SLC vs. MLCAaron Spink08/21/08 01:34 PM
                          SLC vs. MLC vs DRAMpgerassi08/21/08 12:24 PM
                            SLC vs. MLC vs DRAMDavid Kanter08/22/08 01:31 AM
                          SLC vs. MLCGroo08/23/08 12:52 PM
                      SLC vs. MLCDoug Siebert08/21/08 06:14 PM
                        SLC vs. MLCLinus Torvalds08/22/08 08:05 AM
                          SLC vs. MLCDoug Siebert08/22/08 02:27 PM
                            SLC vs. MLCEduardoS08/22/08 06:26 PM
                            SSD Controller differentiationDavid Kanter08/22/08 09:35 PM
                              SSD Controller differentiationDoug Siebert08/22/08 10:34 PM
                                SSD Controller differentiation (supercaps, cost...)anon08/23/08 10:18 AM
                                  SSD Controller differentiation (supercaps, cost...)Doug Siebert08/23/08 10:40 AM
                            SLC vs. MLCLinus Torvalds08/23/08 10:50 AM
                              SLC vs. MLCLinus Torvalds09/08/08 12:03 PM
                                SLC vs. MLCMax09/08/08 01:51 PM
                                  SLC vs. MLCHoward Chu09/08/08 09:04 PM
                                    SLC vs. MLCMax09/08/08 10:29 PM
                                      SLC vs. MLCHoward Chu09/09/08 12:12 AM
                                        RAM vs SSD?Jouni Osmala09/09/08 01:06 AM
                                          RAM vs SSD?Max09/12/08 12:51 PM
                                            RAM vs SSD?EduardoS09/12/08 04:27 PM
                                            Disk cache snapshottingMax09/13/08 08:34 AM
                                              Disk cache snapshottingHoward Chu09/14/08 09:58 PM
                                                Disk cache snapshottingMax09/15/08 12:50 PM
                                        SLC vs. MLCLinus Torvalds09/09/08 07:43 AM
                                          SLC vs. MLCHoward Chu09/09/08 09:42 AM
                                            SLC vs. MLCLinus Torvalds09/09/08 10:39 AM
                                              SLC vs. MLCMichael S09/10/08 12:29 AM
                                                SLC vs. MLCanon09/10/08 02:51 AM
                                                  SLC vs. MLCMichael S09/10/08 03:09 AM
                                                    SLC vs. MLCMax09/10/08 04:48 AM
                                                      SLC vs. MLCMichael S09/10/08 05:52 AM
                                                        SLC vs. MLCMax09/10/08 06:28 AM
                                                    SLC vs. MLCMatt Sayler09/10/08 06:21 AM
                                                      SLC vs. MLCMichael S09/10/08 09:17 AM
                                                    SLC vs. MLCanon09/10/08 06:29 AM
                                                      SLC vs. MLCMichael S09/10/08 09:23 AM
                                                        SLC vs. MLCMatt Sayler09/10/08 10:45 AM
                                                SLC vs. MLCLinus Torvalds09/10/08 07:25 AM
                                                  SLC vs. MLCMichael S09/10/08 09:54 AM
                                                    SLC vs. MLCLinus Torvalds09/10/08 10:31 AM
                                                      Physical vs effective write latencyMax09/11/08 07:35 AM
                                                        Physical vs effective write latencyLinus Torvalds09/11/08 09:06 AM
                                                          Physical vs effective write latencyLinus Torvalds09/11/08 09:48 AM
                                                            Physical vs effective write latencyLinus Torvalds09/11/08 11:39 AM
                                                              Physical vs effective write latencyMark Roulo09/11/08 12:18 PM
                                                                Physical vs effective write latencyDoug Siebert09/11/08 05:59 PM
                                                                  Physical vs effective write latencyLinus Torvalds09/11/08 07:16 PM
                                                                    Physical vs effective write latencyDoug Siebert09/11/08 10:28 PM
                                                        Physical vs effective write latencyMS02/03/09 03:06 PM
                                                  SLC vs. MLC - the trick to latencyAnonymous09/11/08 12:39 PM
                                                    SLC vs. MLC - the trick to latencyanon09/11/08 01:17 PM
                                                      SLC vs. MLC - the trick to latencyAnonymous09/11/08 05:25 PM
                                                        SLC vs. MLC - the trick to latencyDoug Siebert09/11/08 05:47 PM
                                                          SLC vs. MLC - the trick to latencyrwessel09/11/08 06:01 PM
                                                        SLC vs. MLC - the trick to latencyanon09/12/08 12:00 AM
                                                          SLC vs. MLC - the trick to latencyAnonymous09/12/08 08:52 PM
                                                            SLC vs. MLC - the trick to latencyanon09/13/08 10:06 AM
                                                            SLC vs. MLC - the trick to latencyUngo09/15/08 12:18 PM
                                                              To SSD or not? One lady's perspectiveDavid Kanter09/22/08 01:12 AM
                                                                To SSD or not? One lady's perspectiveHoward Chu09/22/08 04:02 AM
                                                                  To SSD or not? Real data..Linus Torvalds09/22/08 07:33 AM
                                                                    To SSD or not? Real data..Ungo09/22/08 12:27 PM
                                                                      4K sectorsWes Felter09/22/08 06:03 PM
                                                                        4K sectorsDaniel09/22/08 10:31 PM
                                                                      Reasons for >512 byte sectorsDoug Siebert09/22/08 09:38 PM
                                                                        Reasons for >512 byte sectorsrwessel09/22/08 10:09 PM
                                                                          Reasons for >512 byte sectorsHoward Chu09/23/08 02:50 AM
                                                                        Reasons for >512 byte sectorsDaniel09/22/08 10:40 PM
                                                                          Reasons for >512 byte sectorsrwessel09/23/08 09:11 AM
                                                                            Reasons for >512 byte sectorsDaniel09/23/08 12:10 PM
                                                                      HDD long sector size availabilityEtienne Lehnart09/23/08 05:32 AM
                                                                        HDD long sector size availabilityrwessel09/23/08 09:19 AM
                                                                          HDD long sector size availabilityEtienne Lehnart09/23/08 02:17 PM
                                                                    To SSD or not? Real data..Jouni Osmala09/22/08 11:16 PM
                                                                  To SSD or not? One lady's perspectiveWes Felter09/22/08 11:25 AM
                                                                How should SSDs be engineered into systems?Rob Thorpe09/22/08 02:01 PM
                                                                  How should SSDs be engineered into systems?Matt Craighead09/23/08 06:59 PM
                                                                    How should SSDs be engineered into systems?Matt Sayler09/24/08 04:17 AM
                                                            ATA/SCSIS, Write Flushes and Asych FilesystemsTruePath01/25/09 04:44 AM
                                                        SLC vs. MLC - the trick to latencyMichael S09/12/08 04:58 AM
                                                        overlapped erase and read Michael S09/12/08 04:59 AM
                                                          overlapped erase and read David W. Hess09/12/08 09:56 AM
                                                          overlapped erase and read Anonymous09/12/08 08:45 PM
                                                            overlapped erase and read Jouni Osmala09/12/08 11:56 PM
                                                            overlapped erase and read Michael S09/13/08 11:29 AM
                                                            overlapped erase and read Michael S09/13/08 12:09 PM
                                                              overlapped erase and read Linus Torvalds09/13/08 02:05 PM
                                                    SLC vs. MLC - the trick to latencyDoug Siebert09/11/08 05:31 PM
                                SLC vs. MLCEduardoS09/08/08 02:07 PM
                                  SLC vs. MLCLinus Torvalds09/08/08 02:30 PM
                                    SLC vs. MLCEduardoS09/08/08 04:01 PM
                                      SSD and RAIDJoe Chang09/08/08 07:42 PM
                                        SSD and RAIDDoug Siebert09/08/08 09:46 PM
                                          SSD and RAIDAaron Spink09/09/08 04:27 PM
                                            SSD and RAIDGroo09/10/08 01:02 PM
                              SLC vs. MLCJoern Engel01/06/09 10:22 AM
                                SLC vs. MLCLinus Torvalds01/06/09 02:04 PM
                                  SLC vs. MLCJoern Engel01/06/09 03:24 PM
                                    SLC vs. MLCrwessel01/06/09 04:47 PM
                                      SLC vs. MLCanonymous01/06/09 05:17 PM
                                        SLC vs. MLCrwessel01/06/09 05:58 PM
                                      SLC vs. MLCJoern Engel01/07/09 12:35 AM
                                    SLC vs. MLCLinus Torvalds01/06/09 05:45 PM
                                      SLC vs. MLCrwessel01/06/09 06:09 PM
                                        SLC vs. MLCLinus Torvalds01/06/09 07:47 PM
                                      SLC vs. MLCJoern Engel01/07/09 12:26 AM
                                    SLC vs. MLCanon01/06/09 08:23 PM
                                      SLC vs. MLCJoern Engel01/07/09 12:52 AM
                                        SLC vs. MLCanon01/07/09 02:34 AM
                                  SLC vs. MLCIntelUser200001/07/09 07:43 AM
                                    SLC vs. MLCLinus Torvalds01/07/09 10:28 AM
                                      drop data filesystem semanticDoug Siebert01/09/09 12:21 PM
                                      FTL and FSiz01/09/09 07:49 PM
                                        FTL and FSLinus Torvalds01/09/09 09:53 PM
                                          FTL and FSiz01/10/09 02:09 AM
                                            FTL and FSMichael S01/10/09 03:19 PM
                                              compiling large programsiz01/10/09 05:51 PM
                                                compiling large programsLinus Torvalds01/10/09 07:58 PM
                                                  compiling large programspeter01/11/09 05:30 AM
                                                  compiling large programsAndi Kleen01/11/09 01:03 PM
                                                  The File AbstractionTruePath01/25/09 06:45 AM
                                                    The File AbstractionHoward Chu01/25/09 01:49 PM
                                                      The File AbstractionLinus Torvalds01/26/09 09:23 AM
                                                        The File AbstractionMichael S01/26/09 01:39 PM
                                                          The File AbstractionLinus Torvalds01/26/09 02:31 PM
                                                            The File AbstractionDean Kent01/26/09 03:06 PM
                                                              The File AbstractionLinus Torvalds01/26/09 04:29 PM
                                                                The File AbstractionMark Christiansen01/27/09 09:24 AM
                                                                  The File AbstractionMark Christiansen01/27/09 10:14 AM
                                                                  The File AbstractionLinus Torvalds01/27/09 10:15 AM
                                                                    The File Abstractionslacker01/27/09 11:20 AM
                                                                      The File AbstractionLinus Torvalds01/27/09 01:16 PM
                                                                        Attributes All The Way DownMark Christiansen01/27/09 02:17 PM
                                                                        The File Abstractionslacker01/27/09 05:25 PM
                                                                          The File AbstractionLinus Torvalds01/28/09 08:17 AM
                                                                            The File Abstraction: API thoughtsCarlie Coats01/28/09 09:35 AM
                                                                            The File Abstractionslacker01/28/09 10:09 AM
                                                                              The File AbstractionLinus Torvalds01/28/09 01:44 PM
                                                                                Programs already 'hide' their metadata in the bytestream, unbeknownst to usersanon01/28/09 09:28 PM
                                                                                The File Abstractionslacker01/29/09 10:39 AM
                                                                                  The File AbstractionLinus Torvalds01/29/09 11:08 AM
                                                                                    The File AbstractionDean Kent01/29/09 11:49 AM
                                                                                      The File AbstractionHoward Chu01/29/09 02:58 PM
                                                                                        The File Abstractionrwessel01/29/09 04:23 PM
                                                                                    Extended Attributes in Actionslacker01/29/09 03:05 PM
                                                                                      Extended Attributes in Actionstubar01/29/09 04:49 PM
                                                                                      Extended Attributes in ActionLinus Torvalds01/29/09 05:15 PM
                                                                                        Like Duhanon01/29/09 07:42 PM
                                                                                          Like Duhanon01/29/09 09:15 PM
                                                                                            Like Duhanon02/01/09 07:18 PM
                                                                                              Double Duh.Anonymous02/01/09 10:58 PM
                                                                                                Double Duh.anon02/02/09 02:08 AM
                                                                                                  Double Duh.Anonymous02/02/09 05:11 PM
                                                                                                    Double Duh.anon02/02/09 07:33 PM
                                                                                              Like DuhDavid Kanter02/01/09 11:05 PM
                                                                                                Like Duhpeter02/01/09 11:55 PM
                                                                                                Like Duhanon02/02/09 01:55 AM
                                                                                                Xattrs, Solar power, regulation and politicsRob Thorpe02/02/09 04:36 AM
                                                                                                  Terminology seems too fuzzy to mehobold02/02/09 06:14 AM
                                                                                                    Terminology seems too fuzzy to merwessel02/02/09 12:33 PM
                                                                                                      good summaryMichael S02/03/09 02:41 AM
                                                                                                        good summaryMark Christiansen02/03/09 09:57 AM
                                                                                                          good summaryHoward Chu02/03/09 10:21 AM
                                                                                                            good summaryMark Christiansen02/03/09 11:18 AM
                                                                                                              good summaryHoward Chu02/03/09 12:00 PM
                                                                                                                good summaryMark Christiansen02/03/09 12:36 PM
                                                                                                          good summaryRagingDragon02/03/09 10:39 PM
                                                                                                            good summaryrwessel02/03/09 11:03 PM
                                                                                                              good summaryRagingDragon02/03/09 11:46 PM
                                                                                                      Terminology seems too fuzzy to meslacker02/04/09 05:06 PM
                                                                                                        Terminology seems too fuzzy to meMichael S02/05/09 01:05 AM
                                                                                                          Terminology seems too fuzzy to meUngo02/05/09 01:15 PM
                                                                                                          Terminology seems too fuzzy to meslacker02/05/09 02:19 PM
                                                                                                            Terminology seems too fuzzy to meHoward Chu02/05/09 04:44 PM
                                                                                          Like Duhiz01/30/09 02:03 AM
                                                                                          EAs (security labels) hosed me badlyanon01/30/09 09:48 PM
                                                                                        Extended Attributes in ActionRagingDragon01/29/09 09:31 PM
                                                                                      Extended Attributes in Actionanonymous01/29/09 08:13 PM
                                                                                      Extended Attributes in ActionHoward Chu01/29/09 09:38 PM
                                                                                        Extended Attributes in Actionslacker01/30/09 11:24 AM
                                                                                          Extended Attributes in Actionanon01/30/09 05:50 PM
                                                                                      Extended Attributes in ActionEtienne Lehnart01/30/09 12:22 AM
                                                                                      Extended Attributes in ActionRob Thorpe01/30/09 12:39 PM
                                                                                        Extended Attributes in Actionslacker01/30/09 01:16 PM
                                                                                          Extended Attributes in Actionanon01/30/09 06:03 PM
                                                                                          Extended Attributes in ActionHoward Chu01/30/09 11:22 PM
                                                                                            Extended Attributes in Actionrwessel01/31/09 12:08 AM
                                                                                              Extended Attributes in Actionanonymous01/31/09 12:22 AM
                                                                                                Extended Attributes in Actionrwessel01/31/09 12:56 AM
                                                                                                  ScalingDean Kent01/31/09 09:04 AM
                                                                                                    ScalingRob Thorpe02/02/09 02:39 AM
                                                                                                      Scalingrwessel02/02/09 11:41 AM
                                                                                                        ScalingHoward Chu02/02/09 12:30 PM
                                                                                                          ScalingDean Kent02/02/09 02:27 PM
                                                                                                            ScalingRob Thorpe02/03/09 05:08 AM
                                                                                                              ScalingDean Kent02/03/09 07:38 AM
                                                                                                              Scalingrwessel02/03/09 02:34 PM
                                                                                                                ScalingRagingDragon02/03/09 10:46 PM
                                                                                                    in defense of software that does not scaleMatt Sayler02/03/09 11:27 AM
                                                                                                      in defense of software that does not scaleHoward Chu02/03/09 12:03 PM
                                                                                                        in defense of software that does not scaleMatt Sayler02/03/09 12:17 PM
                                                                                                        in defense of software that does not scaleRagingDragon02/03/09 11:00 PM
                                                                                                          in defense of software that does not scaleMichael S02/04/09 06:46 AM
                                                                                                            in defense of software that does not scaleRagingDragon02/04/09 09:33 PM
                                                                                                      in defense of software that does not scaleDean Kent02/03/09 12:17 PM
                                                                                                        in defense of software that does not scaleMatt Sayler02/03/09 12:24 PM
                                                                                                        in defense of software that does not scaleVincent Diepeveen02/04/09 10:43 AM
                                                                                                      in defense of software that does not scalerwessel02/03/09 02:44 PM
                                                                                                        in defense of software that does not scaleanon02/04/09 02:35 AM
                                                                                                          in defense of software that does not scaleCarlie Coats02/04/09 05:24 AM
                                                                                                      Scaling with time vs. scaling from the beginning.mpx02/05/09 01:57 AM
                                                                                                  Extended Attributes in ActionMichael S01/31/09 10:33 AM
                                                                                                  Extended Attributes in Actionanon01/31/09 10:37 PM
                                                                                          Extended Attributes in ActionJasonB01/31/09 08:11 AM
                                                                                            Extended Attributes in ActionHoward Chu01/31/09 11:43 AM
                                                                                              Extended Attributes in ActionJasonB01/31/09 04:37 PM
                                                                                                Extended Attributes in ActionHoward Chu02/02/09 02:42 PM
                                                                                                  Extended Attributes in ActionHoward Chu02/02/09 02:44 PM
                                                                    The File AbstractionRob Thorpe01/27/09 11:20 AM
                                                              The File AbstractionHoward Chu01/27/09 12:28 AM
                                                                The File AbstractionMichael S01/27/09 03:00 AM
                                                                The File AbstractionDean Kent01/27/09 08:30 AM
                                                        The File AbstractionAndi Kleen01/27/09 02:05 AM
                                  SLC vs. MLCMichel01/12/09 06:54 PM
                                    SLC vs. MLCLinus Torvalds01/12/09 07:38 PM
                                      SLC vs. MLCrwessel01/13/09 12:52 AM
                                      SLC vs. MLCUngo01/13/09 03:04 PM
                                        SLC vs. MLCWes Felter01/13/09 05:42 PM
                                      SLC vs. MLCTruePath01/25/09 05:05 AM
                    SLC vs. MLCUngo08/21/08 12:54 PM
                    SLC vs. MLCAaron Spink08/21/08 01:20 PM
                  MLC vs. SLCMichael S08/21/08 08:57 AM
                First Dunnington benchmark resultsrwessel08/21/08 10:40 AM
              First Dunnington benchmark resultsAaron Spink08/21/08 03:18 AM
      First Dunnington benchmark resultsEtienne Lehnart08/20/08 04:38 AM
  Will x86 dominate big iron?Tom W08/19/08 10:10 PM
    Will x86 dominate big iron?Jesper Frimann08/20/08 12:28 AM
      Will x86 dominate big iron?Tom W08/20/08 03:42 PM
        Will x86 dominate big iron?David Kanter08/21/08 01:13 AM
          Will x86 dominate big iron?Joe Chang08/21/08 06:54 AM
            Will x86 dominate big iron?asdf08/22/08 01:18 PM
              Will x86 dominate big iron?Dean Kent08/22/08 07:54 PM
        Will x86 dominate big iron?Jesper Frimann08/22/08 09:48 AM
          Will x86 dominate big iron?Tom W08/24/08 01:06 AM
            Will x86 dominate big iron?Michael S08/24/08 04:19 AM
              Will x86 dominate big iron?Dean Kent08/24/08 09:30 AM
                Will x86 dominate big iron?Paul08/24/08 11:16 AM
                  Will x86 dominate big iron?Dean Kent08/24/08 12:37 PM
                Will x86 dominate big iron?Michael S08/25/08 12:53 AM
        Will x86 dominate big iron?someone08/22/08 10:19 AM
          Will x86 dominate big iron?aaron spink08/23/08 02:56 AM
            Will x86 dominate big iron?Michael S08/23/08 09:58 AM
              Will x86 dominate big iron?someone08/23/08 01:51 PM
            Will x86 dominate big iron?someone08/23/08 01:55 PM
              Will x86 dominate big iron?Aaron Spink08/23/08 04:52 PM
                Will x86 dominate big iron?anonymous08/23/08 05:28 PM
                  Will x86 dominate big iron?Dean Kent08/23/08 06:12 PM
                    Off road and topicEduardoS08/23/08 06:28 PM
                  Will x86 dominate big iron?someone08/23/08 06:26 PM
                    Will x86 dominate big iron?Dean Kent08/23/08 09:40 PM
                    Will x86 dominate big iron?anonymous08/24/08 01:46 AM
                  Off road and topicDavid W. Hess08/24/08 03:24 AM
                    Off road and topicAaron Spink08/24/08 04:14 AM
  Beckton vs. DunningtonMr. Camel08/22/08 06:30 AM
    Beckton vs. Dunningtonjokerman08/22/08 12:12 PM
    Beckton vs. DunningtonMr. Camel05/29/09 10:16 AM
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How do you spell green?