Messages in this thread | | | Date | Tue, 23 Mar 2010 12:28:31 +0100 | Subject | Re: Poor interactive performance with I/O loads with fsync()ing | From | Pawel S <> |
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Hello
I am experiencing very similar issue. My system is a regular desktop PC and it suffers from very high I/O latencies (sometimes desktop "hangs" for eight seconds or more) when copying large files. I tried kernels up to 2.6.34-rc2, but without luck. This issue was raised at Phoronix forums and Arjan (from Intel) noticed it can be VM related:
http://www.phoronix.com/forums/showpost.php?p=114975&postcount=51
Here is my perf timechart where you can notice I/O "steals" CPU from the other tasks:
http://hotfile.com/dl/30596827/ebe566b/output.svg.gz.html
Regards!
P.S. if there is some way I can help more just let me know please.
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