On Thu, Oct 14, 2010 at 7:11 PM, MALATTAR <mouhannad.alattar@xxxxxxxxxxxxxx> wrote: > > Le 12/10/2010 07:05, KAMEZAWA Hiroyuki a écrit : > > On Fri, 08 Oct 2010 10:09:51 +0200 > > MALATTAR<mouhannad.alattar@xxxxxxxxxxxxxx> wrote: > > > >> Le 07/10/2010 16:43, MALATTAR a écrit : > >>> ------------------------------------------------------------------------ > >>> 06.10.2010 23:41, MALATTAR ?????: > >>> > >>>> / the container dora1, where i launch an instance of my IDS, does not take > >>> />/ more than 70 MB as memory even though the memory limit for it is much > >>> />/ bigger than this value, > >>> / > >>> How do you measure memory usage? > >> by using the command: > >> lxc-cgroup -n dora1 memory.usage_in_bytes > >>> What's in memory.max_usage_in_bytes of > >>> the container's cgroup? > >> executing the next command lxc-cgroup -n dora1 memory.max_usage_in_bytes > >> gave me 70193152 bytes > >> > > Hmm. what latencytop shows ? > > > > You can see this kind of output. > > == > > Cause Maximum Percentage > > Writing a page to disk 551.6 msec 36.8 % > > Fork() system call 273.7 msec 1.1 % > > Page fault 253.9 msec 29.5 % > > Writing buffer to disk (synchronous) 225.9 msec 2.9 % > > Creating block layer request 202.7 msec 17.1 % > > Walking directory tree 161.5 msec 1.4 % > > [congestion_wait] 97.6 msec 4.4 % > > Executing a program 97.1 msec 0.3 % > > synchronous write 73.9 msec 0.1 % > > == > > > > IMHO, if memory limit is the problem, "Page Fault" tend to be big. > > > > > > Thanks, > > -Kame > > > > > executing latencytop during the execution of my program gave me: > Cause > Maximum Percentage > fsync() on a file (type 'F' for details) 45.1 > msec 2.2 % > Waiting for event (poll) 5.0 > msec 47.9 % > Userspace lock contention 5.0 > msec 43.1 % > Waiting for event (select) 4.8 > msec 5.7 % > Throttling GPU while waiting for commands 3.4 msec 0.4 % > [i915_do_wait_request] 3.3 > msec 0.5 % > Waiting for data on unix socket 0.3 > msec 0.1 % > Waiting for TTY data 0.2 > msec 0.1 % > > Process mysqld (291) Total: 2.3 msec > Waiting for data on unix socket 0.3 msec 100.0 % > > It seems that there is no problem... > > also memtest command was able to allocate up to 1024MB but it takes a > long time > for one loop only ... > So, i think the problem is in my program not in the container, is not it? Could you please dump your cgroup filesystem? What is memory.limit_in_bytes, memory.stat? fysnc() can clearly hold up things across the filesystem with ext3 and other FS. The source does sound like mysql database for the frequent fsync's - is that correct? What does the iotop output look like? Balbir _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers
