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[Xen-devel] Re: [Xen-users] Webserver throughput in xen-environment

From: Fasiha Ashraf <feehapk@xxxxxxxxxxx>

Date: Wed, 23 Dec 2009 13:26:34 +0530 (IST)

Cc: xen <xen-devel@xxxxxxxxxxxxxxxxxxx>, "xen-users@xxxxxxxxxxxxxxxxxxx" <xen-users@xxxxxxxxxxxxxxxxxxx>

Delivery-date: Tue, 22 Dec 2009 23:57:10 -0800

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Where are you running ab? What connection from test client to your xen server?
Ddoes dom0 have a dedicated CPu?

I am running ab in an external client. 1G link is used to connect from external client to web server (running inside xen guest). Dom0 have 2 dedicated cores out of 8 total.

Sent from my iPhone

On Dec 22, 2009, at 8:27 AM, Fasiha Ashraf <feehapk@xxxxxxxxxxx> wrote:

Hi

I am running a web server in one of my xen guests. Using ab as a load generating tool i have collected some throughput data for different file sizes like 5KB, 10KB and 100KB. One thing that i have noticed strange here is throughput drops down in a virtual http server, it happends in case of 5KB and 10KB files.

Also it takes longer to run tests in virtual environment.

Doc Size No. of Requests Concurrency Keep-alive Time taken for tests(sec) Requests/sec Transfer rate (KB/s) Transfer rate (Mb/s) CPU%

MaxKeepAliveRequests= 1000, ServerLimit= 1024, MaxClient= 1024

5KB 1,000,000 64 On 265.67 3764.03 19992.21 156.19 90 - 100

10KB 1,000,000 64 On 284.37 3516.58 36226.45 283.02 90 - 100

100KB 1,000,000 64 On 875.91 1141.67 114516.63 894.66 90 - 100

5KB 1,000,000 128 On 264.26 3784.13 20099.01 157.02 90 - 100

10KB 1,000,000 128 On 292.47 3419.18 35223.16 275.18 90 - 100

100KB 1,000,000 128 On 877.08 1140.14 114366.72 893.49 90 - 100

Regards,
Fasiha Ashraf

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