On Tue, Aug 24, 2010 at 4:36 AM, Dietmar Maurer <diet...@proxmox.com> wrote:
> Hi all, > > > > we observe very slow fsync rates on newer 2.6.32 kernel with OpenVZ: > > > > It is possible to reproduce the problem with sysbench: > > > > # sysbench --test=fileio --file-num=1 --file-total-size=50G > --file-fsync-all=on --file-test-mode=seqrewr --max-time=100 > --file-block-size=4096 --max-requests=0 run > > > > Requests/sec executed is considerable slower on OpenVZ kernel (factor 20 on > Intel Modular Server). > Are you running the tests in a VE? I'd be curious to see your vz.conf file, and the output of /proc/user_beancounters for the VE you are running the tests on. Do you have quotas turned on? Roberto
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