linux-kernel - Re: [patch 00/15] CFS Bandwidth Control V6

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Date:	Tue, 14 Jun 2011 14:58:07 +0800
From:	Hu Tao <hutao@...fujitsu.com>
To:	Paul Turner <pjt@...gle.com>
Cc:	linux-kernel@...r.kernel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Bharata B Rao <bharata@...ux.vnet.ibm.com>,
	Dhaval Giani <dhaval.giani@...il.com>,
	Balbir Singh <balbir@...ux.vnet.ibm.com>,
	Vaidyanathan Srinivasan <svaidy@...ux.vnet.ibm.com>,
	Srivatsa Vaddagiri <vatsa@...ibm.co>
Subject: Re: [patch 00/15] CFS Bandwidth Control V6

Hi,

I've run several tests including hackbench, unixbench, massive-intr
and kernel building. CPU is Intel(R) Xeon(R) CPU X3430  @ 2.40GHz,
4 cores, and 4G memory.

Most of the time the results differ few, but there are problems:

1. unixbench: execl throughout has about 5% drop.
2. unixbench: process creation has about 5% drop.
3. massive-intr: when running 200 processes for 5mins, the number
   of loops each process runs differ more than before cfs-bandwidth-v6.

The results are attached.

View attachment "massive-intr-200-300-without-patch.txt" of type "text/plain" (2784 bytes)

View attachment "massive-intr-200-300-with-patch.txt" of type "text/plain" (3200 bytes)

View attachment "massive-intr-200-60-without-patch.txt" of type "text/plain" (2608 bytes)

View attachment "massive-intr-200-60-with-patch.txt" of type "text/plain" (3120 bytes)

Download attachment "massive-intr.png" of type "image/png" (79913 bytes)

View attachment "unixbench-cfs-bandwidth-v6" of type "text/plain" (5624 bytes)

View attachment "unixbench-without-cfs-bandwidth-v6" of type "text/plain" (5638 bytes)