SLC vs. MLC

By: Michael S (already5chosen.delete@this.yahoo.com), September 10, 2008 8:54 am
Room: Moderated Discussions
Linus Torvalds (torvalds@linux-foundation.org) on 9/10/08 wrote:
---------------------------
>Michael S (already5chosen@yahoo.com) on 9/10/08 wrote:
>>
>>For normal usage write latency doesn't matter at all.
>
>This is absolutely not true!
>
>It's a common mistake to think this, but the fact is,
>write latency - even for individual IOs - can matter a
>lot.
>
>You are right to a point that it doesn't matter for normal
>write-backs that are all totally buffered, but:
>
>- most hardware interfaces have quite limited queues.
>
>For example, if you're a SATA disk, the number of
>outstanding writes to the disk is usually in the low
>tens (ie 16-32). It can be lower.
>
>This means that if you have a GC event that means that
>writes will basically hit a roadblock for tens or even
>hundreds of milliseconds, then if any writeback is
>going on, then totally unrelated reads will also
>be blocked, simply because there are no more entries in
>the hardware queue.
>
>Yes, you can limit the number of outstanding writes to
>less than the number of hw queue entries, but nobody
>does that because it would hurt throughput quite a lot.
>

But in this case I'd suffer from increased _read_ latency (and/or reduced throughput), not write. That's something I can measure.

>- even if you never hit the above issue (and you will),
>there are many operations that effectively require
>synchronous writes.
>
>This will commonly happen for certain metadata (it does
>depend on the filesystem a lot), but it will also happen
>for perfectly regular data when the user asks for a
>sync write. And no, it's not at all "special" to do that.
>
>Every single sane mail reader will do it, to make sure
>that email won't be lost in case of a data loss. A lot
>of editors will do it for the same reason. Anybody who
>uses a database will do it, and many databases will have
>a huge hiccup if the writes bunch up due to GC events.

As I said in the other post, then the storage device should lie to you, or let's call it telling more relevant truth :-)
It should tell me that the data is written not when it is actually written to non-volatile media but immediately after device itself is sure that it will inevitably happen.

>
>And what uses databases? Pretty much everything. Look
>at Firefox-3. It puts all your browsing history, and all
>your preferences, and all your caches in one single
>database, and then because the database engine thinks it
>is all so horibly important (and the FF people were
>silly enough to do so too), it will write much of it out
>synchronously. Causing huge delays when the file
>system must flush the whole log.
>
>Really. None of the above issues are even remotely
>odd or uncommon, even for very standard desktop operations
>(and that's when you'll notice half-second pauses very very
>clearly indeed!).
>
>So single-write latency very much absolutely does matter.
>
>And yes, you can put a RAM buffer on the SSD, have a cap
>to give it time to flush even in the case of power loss,
>return "success" early from the write, and yes, people
>actually do that. But no, it doesn't actually help
>at all for the event of something like a GC cycle causing
>a few hundred ms of delays.
>
>Why? Because when that happens, al writes will be
>buffered up, and it will just move the point (slightly)
>at which point the thing is stuck. It can hide the problem
>under light load, but not under any kind of real
>write-back event.

But then again, I'd feel the problem as the read latency, read throughput or write throughput.

>
>>Write latency doesn't matter so much that application
>>program has no easy way to measure it.
>
>Sadly, a lot of people seem to think like you. The whole
>FF thing was a total disaster. Now, admittedly, it was
>largely just the FF people being totally stupid, and just
>thinking that databases are wonderful, but that in turn
>was because people don't understand these issues!
>
>>The only case where write latency matters is a data
>>retention during sudden loss of power, but that's vendor's
>>problem, not ours. At least I hope so.
>
>See above: your buffers will fill up.
>
>And if you think a few hundred ms is unrealistic for a
>GC event, you're very naive! Even with much faster
>RAM, even with much smaller data sets, GC events can take
>seconds to complete if you do them badly. From the
>timings I've seen of the OCZ SSD's (which actually perform
>really well on average), when it hits a wall, it really
>does hit a wall, ie latencies really are in the
>second range, not milliseconds.
>
>(To some degree, GC on a SSD is slightly simpler than GC on
>some generic RAM allocation, since you have fixed 512-byte
>blocks rather than any random size. But on the other hand,
>the whole erase cycle thing introduces complexities all its
>own, so I suspect it's all pretty nasty).
>
>>Random writes throughput is something we could measure
>>with relative ease, That tells as that, unlike write
>>latency, random writes throughput could be practically
>>important.
>
>I do not know why you link "ease of measurement" with the
>concept of "importance". Why do you link the two?
>

Because, when something is important to me I should always know how to measure it, may be not precisely, but at least I should be easily able to tell that A is bigger than B. To do it just compare the "goodness" of the very same operation for which you think the property in question is important.

>Yes, write-back performance is much harder to measure, but
>that's because it's asynchronous, not because it's
>not important.
>
>And things like hiccups in sync write latencies are harder
>to measure because they have very non-obvious patterns, to
>the point of being almost random (ie it will depend on
>other load issues like how much data is queued up in the
>system, and where the GC event happens, etc etc).
>
>And yes, latency in general is much harder to measure
>well than throughput. For throughput, you just time the
>start and the end, and divide by the amount of work. But
>measuring latency means having to have lots and lots of
>timing points over the whole workload, and doing some real
>analysis to see where maxima are etc.

I don't agree that read latency is hard to measure. It can be time-consuming and it is possible that in order to be relevant the result should be presented as histogram rather than a single number, but conceptually the measurement is simple. Not so for write latency.


>
>So yes, throughput is much much easier to measure. But then
>thinking that that means that it is more important is really
>misguided. When you actually use a desktop, I will
>guarantee you that what ends up irritating you will
>almost always be the latency issues, not the throughput.
>
>Really.
>
>Linus

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