Messages in this thread | | | Date | Thu, 18 Mar 2010 00:23:27 +0530 | From | Balbir Singh <> | Subject | Re: [PATCH -mmotm 0/5] memcg: per cgroup dirty limit (v7) |
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* Vivek Goyal <vgoyal@redhat.com> [2010-03-17 09:34:07]:
> > > > > > root cgroup > > > ========== > > > #time dd if=/dev/zero of=/root/zerofile bs=4K count=1M > > > 4294967296 bytes (4.3 GB) copied, 56.098 s, 76.6 MB/s > > > > > > real 0m56.614s > > > > > > test1 cgroup with memory limit 100M > > > =================================== > > > # time dd if=/dev/zero of=/root/zerofile1 bs=4K count=1M > > > 4294967296 bytes (4.3 GB) copied, 19.8097 s, 217 MB/s > > > > > > real 0m19.992s > > > > > > > This is strange, did you flish the cache between the two runs? > > NOTE: Since the files are same, we reuse page cache from the > > other cgroup. > > Files are different. Note suffix "1". >
Thanks, I'll get the perf output and see what I get.
-- Three Cheers, Balbir
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