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xen-devel
RE: [Xen-devel] poor domU VBD performance.
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To: |
"Andrew Theurer" <habanero@xxxxxxxxxx>, "Keir Fraser" <Keir.Fraser@xxxxxxxxxxxx> |
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Subject: |
RE: [Xen-devel] poor domU VBD performance. |
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From: |
"Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx> |
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Date: |
Thu, 31 Mar 2005 23:36:50 +0100 |
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Cc: |
Xen development list <xen-devel@xxxxxxxxxxxxxxxxxxx>, Kurt Garloff <garloff@xxxxxxx>, Philip R Auld <pauld@xxxxxxxxxxx>, Vincent Hanquez <tab@xxxxxxxxx>, Jens Axboe <axboe@xxxxxxx>, Christian Limpach <Christian.Limpach@xxxxxxxxxxxx> |
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Thu, 31 Mar 2005 22:37:07 +0000 |
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AcU2PuuudukMqDk/Teqgrw0n5PErzwAArhow |
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[Xen-devel] poor domU VBD performance. |
> reqsze MB/sec svcmt
>
> xenU 16k 6266.67 1.25
> 32k 12618.67 1.20
> 64k 25002.67 1.28
> 128k 49322.67 1.35
> 256k 58538.67 3.15
>
> xen0 16k 13818.67 1.15
> 32k 27573.33 1.16
> 64k 54784.00 1.16
> 128k 58581.33 2.18
> 256k 58453.33 4.38
>
> noXen 16k 58679.19 0.27
> 32k 58453.33 0.54
> 64k 58713.04 1.08
> 128k 58174.09 2.17
> 256k 58820.07 4.36
These figures for xen0 are interesting. It's odd that we tail off so
badly for short requests. What interrupt rates are occuring when you do
these tests?
Thanks,
ian
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