Hi. Thank you for using memory cgroup :) On Wed, 20 May 2009 13:52:29 +0800, anqin <anqin.qin@xxxxxxxxx> wrote: > Hi all, > > I would like to bind given physical memory to specific task group, > however it does not take effect in my experiments. Are there > something wrong in my experiments. > > My experiment is done under the kernel 2.6.29.3 and I constructed > my task group by following commands: > > a) In shell #1, prepare a bash : > > # bash > # echo $$ > 2253 > > b) In shell #2, prepare the memory control via cgroupfs: > > # mount -t cgroup cgroup /mnt/mycgrp > # cd /mn/mycgrp > # mkdir mycontainer > # echo 0 > mycontainer/cpuset.mems > # echo 0-1 > mycontainer/cpuset.cpus > # echo 2252 > mycontainer/tasks > > # cat mycontainer/memory.usage_in_bytes > 2875392 > # echo 3000000 > mycontainer/memory.max_usage_in_bytes > # cat mycontainer/memory.max_usage_in_bytes > 3002368 > You need to write the limit to memory.limit_in_bytes. max_usage_in_bytes means the max of the usage so far(you can reset it by writing to it). See Documentation/cgroups/memory.txt(it might be a bit old). Thanks, Daisuke Nishimura. > > c) In Shell #1, run a memory consumer (in which, malloc() is called > to allocate memory and not free until program is existed) to allocate > 500M memory: > > # /tmp/memoy_consumer_program 500 > > In Shell #2, the used memory ascends from start point 2875392 when > program begins (from number presented in memory.usage_in_bytes), > but it return to start point when it touches the maximal boundary. > > On the other hand, I also run the top to watch the memory hold by > memoy_consumer_program. In top, the memory (both virtual and rss > memory ) is always growing without any limitation. > > Is this phenomenon the correct behaviors of memory cgroups? > > > Best Regards, > > Anqin > _______________________________________________ > Containers mailing list > Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx > https://lists.linux-foundation.org/mailman/listinfo/containers _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers
