Harpertown Preview Online

Article: Harpertown Performance Preview
By: Joe Chang (jchang6.delete@this.Xyahoo.com), November 11, 2007 9:56 am
Room: Moderated Discussions
Considering that between the Xeon X5355 2.66GHz, Xeon 7140 (3.4GHz NetBurst) and the Opteron DC 2.8GHz
the Core 2 based X5355 has the best SPEC CPU 2006 int
for 8 core TPC-C & H results (2xX5355, 4x7140, & 4x Opt)
the 7140 has the best TPC-C (30% over Core2)
the Opteron has the best TPC-H by about 10% over Core2

Considering the TPC-C results aimed at best performance (as opposed to price-performance) typically run at 175-200 IOPS per data disk, then the 528 disks in the X5355 241K TPC-C result is probably on the order of 100K IOPS, at 8KB per IOP, makes for 800MB/s, which is not really heavy for the 5000P chipset.

I am not sure what is limiting in TPC-H, as I do not have a recent generation perfmon log,
but look at the HP ML370G5 result with X5355,
6 P800 SAS RAID controllers, 25 SAS disk on each controller.
You can get about 800MB/sec from a single first gen SAS RAID controller. There was an Intel/LSI Logic press announcement claiming 3GB/s IO from a system with the 5000P chipset. I think the reference system has 1x8 and 3x4 PCI-E slots. The ML370G5 with 6x4 PCI-E might be able to do more.

The new Seaburg chipset is listed as capable of 44 PCI-E (gen 1) lanes, so this could allow for 10 x4 PCI-E slots,
so I think this could benefit TPC-H

It is clear that TPC-C is more influenced by cache size.
Hence the weakest CPU (in terms of SPEC CPU int) had the best TPC-C by a huge amount with the help of the 16M L3,
TPC-C is also helped by HT, which is not a factor in TPC-H or SPEC CPU

Anyways, hopefully we will have published TPC-C & H results this coming week to scrutinize

Marcin Dalecki (martin@dalecki.de) on 11/11/07 wrote:
>For a DB load the cache snoop handling should have no really noticable impact.
>Those loads tend to pin tasks to particular CPUs anyway and tend to be IO bound
>- and there you will gain the most from the huge improvement on PCI throughput availibity.
>Depending on how you stuff your system with IO subsystems this could have an overallimpact
>even on the order of hunderd of percents. And then of course remember that you can staff more RAM in to the system.
< Previous Post in ThreadNext Post in Thread >
TopicPosted ByDate
Harpertown Preview OnlineDavid Kanter2007/11/09 06:44 AM
  Stoakley vs. BensleyAnonymous12007/11/09 08:58 AM
  Harpertown Preview OnlineMarcin Niewiadomski2007/11/09 11:59 AM
    Harpertown Preview OnlineDavid Kanter2007/11/09 06:51 PM
      So...anonymous2007/11/09 07:47 PM
        So...anon2007/11/09 08:49 PM
          So...anonymous2007/11/09 09:25 PM
            So...anon2007/11/09 10:50 PM
              That's just how I writeDavid Kanter2007/11/10 12:44 PM
                That's just how I writeanonymous2007/11/10 04:58 PM
                  That's just how I writeDean Kent2007/11/10 07:27 PM
                    ;-)anonymous2007/11/10 07:31 PM
      Harpertown Preview Onlineanonymous2007/11/09 11:10 PM
        Harpertown Preview OnlineDavid Kanter2007/11/10 01:49 PM
      Harpertown Preview OnlineMarcin Niewiadomski2007/11/10 03:10 AM
        Harpertown Preview OnlineMarcin Dalecki2007/11/11 04:01 AM
          Harpertown Preview OnlineJoe Chang2007/11/11 09:56 AM
            Harpertown Preview OnlineJoe Chang2007/11/11 06:15 PM
  xmlmark and jbbHenrik S2007/11/09 12:30 PM
    alsoHenrik S2007/11/09 12:43 PM
      alsoDavid Kanter2007/11/09 06:52 PM
        alsoHenrik S2007/11/10 12:09 AM
  Harpertown Preview Online*(&^2007/11/09 11:38 PM
    Harpertown Preview OnlineDavid Kanter2007/11/10 01:53 PM
  Supermicro MBgpriatko2007/11/11 12:48 PM
    Supermicro MBgpriatko2007/11/12 01:48 PM
      Supermicro MBDavid Kanter2007/11/13 12:52 AM
        800 MHz vs 667 MHz FB-DIMMsgpriatko2007/11/13 08:09 PM
          800 MHz vs 667 MHz FB-DIMMsDavid Kanter2007/11/14 12:38 AM
            800 MHz vs 667 MHz FB-DIMMsgpriatko2007/11/15 08:29 PM
  New O-O-O transaction Mode?blaine2007/11/12 05:37 PM
    New O-O-O transaction Mode?Andi Kleen2007/11/12 05:57 PM
      New O-O-O transaction Mode?Michael S2007/11/13 01:45 AM
    New O-O-O transaction Mode?Michael S2007/11/13 02:05 AM
    New O-O-O transaction Mode?David Kanter2007/11/13 03:46 AM
Reply to this Topic
Body: No Text
How do you spell avocado?