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SubjectRE: Kernel 2.6.8.1: swap storm of death - CFQ scheduler=culprit
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> > Jens, is this huge amount of bio/biovec's allocations 
> expected with CFQ? Its really really bad.
>
> Nope, it's not by design :-)
>
> A test case would be nice, then I'll fix it as soon as possible. But
> please retest with 2.6.8.1 marcelo, 2.6.8-rc4 is missing an important
> fix to ll_rw_blk that can easily cause this. The first report is for
> 2.6.8.1, so I'm more puzzled on that.

I tried with 2.6.8.1 and 2.6.8.1-mm4, both had the problem. If there
is anything extra I need to try/record, just shoot!

Original post with testcase + stats:
http://article.gmane.org/gmane.linux.kernel/228156

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