On 2011-02-01 13:14, Jan Kara wrote:
Definitely. There have been several patches fixing livelock issues
in this area under various conditions. Considering your use case, you
might be hit by problems being fixed by commits:
6585027a5e8cb490e3a761b2f3f3c3acf722aff2
aa373cf550994623efb5d49a4d8775bafd10bbc1
b9543dac5bbc4aef0a598965b6b34f6259ab9a9b
(went into 2.6.38-rc1)
I couldn't get above to apply on a 2.6.35.10 kernel, but applied to
a 2.6.37 the problem seems solved. Have they been queued up for stable?
possibly also older
7624ee72aa09334af072853457a5d46d9901c3f8
(in 2.6.36-rc1)
This one alone applied to 2.6.35 didn't solve it.
jk@clyde:~$ time sync
real 19m2.650s
user 0m0.000s
sys 0m0.030s
Without notable disk-activity while waiting. (<5MB/s measured using dstat)
This sample was "decent" I've seen sync times over 2 horus on this system
with 128GB of memory.. again without any notable disk-activity while
waiting.
Thanks for your prompt response.
--
Jesper
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