On Fri, 12 Mar 2010 00:59:22 +0100 Andrea Righi <arighi@xxxxxxxxxxx> wrote: > On Thu, Mar 11, 2010 at 01:07:53PM -0500, Vivek Goyal wrote: > > On Wed, Mar 10, 2010 at 12:00:31AM +0100, Andrea Righi wrote: > mmmh.. strange, on my side I get something as expected: > > <root cgroup> > $ dd if=/dev/zero of=test bs=1M count=500 > 500+0 records in > 500+0 records out > 524288000 bytes (524 MB) copied, 6.28377 s, 83.4 MB/s > > <child cgroup with 100M memory.limit_in_bytes> > $ dd if=/dev/zero of=test bs=1M count=500 > 500+0 records in > 500+0 records out > 524288000 bytes (524 MB) copied, 11.8884 s, 44.1 MB/s > > Did you change the global /proc/sys/vm/dirty_* or memcg dirty > parameters? > what happens when bs=4k count=1000000 under 100M ? no changes ? -Kame -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>