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    SubjectRe: Supermicro X5DL8-GG (ServerWorks Grandchampion LE chipset) slow
    Date
    On Sat, 22 Feb 2003 02:43 pm, you wrote:
    > > > > 10x 120GB WD HDD, ServerWorks Grand Champion LE.
    > > > > I am running RH7.3 with 2.4.20 kernel. The performance of this box
    > > > > is about half of an almost identical box (Supermicro X5DP8-G2 mobo,
    > > > > E7501
    >
    > well, I've rarely seen anyone claiming good performance for any SW chipset,
    > especially compared to i75xx's.

    I wonder where the problem lies? Is it hardware/software?

    >
    > > Here is a rough comparison of E7500, E7501 and the ServerWorks Chipset:
    >
    > I don't really understand the column headed "E7500E7501". which is it?
    > 7500 (dual PC1600) or 7501 (dual pc2100)?
    >
    > > | Benchmark | E7500E7501 | ServerWorks | GrandChampion LE |
    > >
    > > =========================================================================
    > >=
    > >
    > > | Nbench (integer index) | 33.47 | 38.78 | 10.61 |
    >
    > oh, maybe the headers are just broken? I can readily believe that

    You are right, the header is broken.

    > 7500 is 33, 7501 is a little higher, and GCLE is a lot lower.
    > remember that this benchmark spends most of its time in strcpy/strcmp...
    >
    > hmm, I'd be curious to see whether lmbench indicates the GCLE's memory
    > latency is much higher than Intel's. your hdparm -t score indicates that
    > the GCLE doesn't have a memory *bandwidth* problem.

    Yeah, I noticed that too, buffer cache read is pretty impressive actually.

    I haven't had a chance to run lmbench as it takes about 5 hours to complete.
    Will probably do it within these couple of days.

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