From: Alexey Dobriyan <adobriyan@sw.ru>
To: linux-kernel@vger.kernel.org
Subject: Not so fair group scheduling
Date: Thu, 13 Mar 2008 18:21:42 +0300 [thread overview]
Message-ID: <20080313152142.GB3148@localhost.sw.ru> (raw)
Simple testcase:
a) 2 physical CPUs, not HT or something
b) root gets 1024 cpu_share according to /sys/kernel/uids/0/cpu-chare
c) user gets 1024 cpu_chare --//--
root runs 1 busy loop, user runs 2 busy loops
According to top they got 57% for root, and 66+77% for user. But they
should have 100%/50+50% division. Am I right?
If yes are there any patches to fix this available for testing?
reply other threads:[~2008-03-13 15:21 UTC|newest]
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