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List: xen-users
Subject: Re: [Xen-users] DomU better performance than Dom0
From: "John T. Yocum" <john () fluidhosting ! com>
Date: 2007-07-31 13:36:44
Message-ID: 46AF3AEC.3000506 () fluidhosting ! com
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The benchmark I used is called UnixBench.
--John
jian zhang wrote:
> Hi:
> I also want to measure the performance of Xenlinux, but I don't know
> which tools to use, would you please tell me which tool you used for the
> following results.
> Thank you very much!!
>
> 2007/7/31, John T. Yocum <john@fluidhosting.com
> <mailto:john@fluidhosting.com>>:
>
> Hello!
>
> I've got an interesting performance problem, I'm running Xen 3.1 on a
> Dell with 2 x Quad-core 2.33Ghz CPUs, and 4GB RAM. Running UnixBench on
> the system without Xen the performance is pretty good, but once running
> Xen the performance drops by a large amount.
>
> Any insight into why the score is so much lower with Xen would be
> appreciated. (UnixBench scores at bottom)
>
> Thanks,
> John
>
> CentOS 5 without Xen
>
> INDEX VALUES
> TEST BASELINE
> RESULT INDEX
>
> Dhrystone 2 using register variables 376783.7 52116444.7
> 1383.2
> Double-Precision Whetstone 83.1
> 2612.0 314.3
> Execl Throughput
> 188.3 11429.1 607.0
> File Copy 1024 bufsize 2000 maxblocks 2672.0
> 155443.0 581.7
> File Copy 256 bufsize 500 maxblocks
> 1077.0 37493.0 348.1
> File Read 4096 bufsize 8000
> maxblocks 15382.0 1475439.0 959.2
> Pipe-based Context Switching 15448.6
> 548465.7 355.0
> Pipe Throughput
> 111814.6 3313637.0 296.4
> Process Creation
> 569.3 34050.6 598.1
> Shell Scripts (8 concurrent) 44.8
> 3566.8 796.2
> System Call Overhead
> 114433.5 2756155.3 240.9
> =========
> FINAL
> SCORE 510.9
>
> CentOS 5 Dom0
>
> INDEX VALUES
> TEST BASELINE
> RESULT INDEX
>
> Dhrystone 2 using register variables 376783.7 50864253.7
> 1350.0
> Double-Precision Whetstone 83.1
> 2617.9 315.0
> Execl Throughput 188.3
> 2786.5 148.0
> File Copy 1024 bufsize 2000 maxblocks 2672.0
> 159749.0 597.9
> File Copy 256 bufsize 500 maxblocks
> 1077.0 44884.0 416.8
> File Read 4096 bufsize 8000
> maxblocks 15382.0 1191772.0 774.8
> Pipe-based Context Switching 15448.6
> 306121.8 198.2
> Pipe Throughput
> 111814.6 1417645.2 126.8
> Process Creation 569.3
> 4699.2 82.5
> Shell Scripts (8
> concurrent) 44.8 781.6 174.5
> System Call Overhead
> 114433.5 1021813.7 89.3
> =========
> FINAL
> SCORE 261.6
>
> CentOS 5 DomU
>
> INDEX VALUES
> TEST BASELINE
> RESULT INDEX
>
> Dhrystone 2 using register variables 376783.7 38015133.3
> 1008.9
> Double-Precision Whetstone 83.1
> 2023.4 243.5
> Execl Throughput 188.3
> 3877.4 205.9
> File Copy 1024 bufsize 2000 maxblocks 2672.0 270737.0
> 1013.2
> File Copy 256 bufsize 500 maxblocks
> 1077.0 78470.0 728.6
> File Read 4096 bufsize 8000
> maxblocks 15382.0 1227115.0 797.8
> Pipe Throughput
> 111814.6 1383157.5 123.7
> Pipe-based Context Switching 15448.6
> 310378.3 200.9
> Process Creation 569.3
> 7534.8 132.4
> Shell Scripts (8 concurrent) 44.8
> 1179.6 263.3
> System Call Overhead
> 114433.5 1056362.3 92.3
> =========
> FINAL
> SCORE 308.2
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com <mailto:Xen-users@lists.xensource.com>
> http://lists.xensource.com/xen-users
>
>
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