Ciao Juri, On 06/07/2016 07:14 AM, Juri Lelli wrote: > Interesting. And your test is using cpuset controller to partion > DEADLINE tasks and then modify groups concurrently? Yes. I was studying the partitioning/admission control of the deadline scheduler, to document it. I was using the minimal task from sched deadline's documentation as the load (the ./m in the bellow script). Here is the script I was using in the test: -----------%<------------------------------------------------------------ #!/bin/sh # I am running on a 8 cpus box, you need to adjust the # cpu mask to match to your cpu topology. cd /sys/fs/cgroup/cpuset # global settings # echo 1 > cpuset.cpu_exclusive echo 0 > cpuset.sched_load_balance # a cpuset to run ordinary load: if [ ! -d ordinary ]; then mkdir ordinary echo 0-3 > ordinary/cpuset.cpus echo 0 > ordinary/cpuset.mems echo 0 > ordinary/cpuset.cpu_exclusive # the load balance can be enabled on this cpuset. echo 1 > ordinary/cpuset.sched_load_balance fi # move all threads to ordinary cpuset ps -eL -o lwp | while read tid; do echo $tid >> ordinary/tasks 2> /dev/null || echo "thread $tid is pinned or died" done echo $$ > ordinary/tasks cat /proc/self/cpuset ~/m & # a single cpu cpuset (partitioned) if [ ! -d partitioned ]; then mkdir partitioned echo 4 > partitioned/cpuset.cpus echo 0 > partitioned/cpuset.mems echo 0 > partitioned/cpuset.cpu_exclusive fi echo $$ > partitioned/tasks cat /proc/self/cpuset ~/m & # a set of cpus (clustered) if [ ! -d clustered ]; then mkdir clustered echo 5-7 > clustered/cpuset.cpus echo 0 > clustered/cpuset.mems echo 0 > clustered/cpuset.cpu_exclusive # the load balance can be enabled on this cpuset. echo 1 > clustered/cpuset.sched_load_balance fi echo $$ > clustered/tasks cat /proc/self/cpuset ~/m ----------->%------------------------------------------------------------ The problem rarely reproduces. -- Daniel -- To unsubscribe from this list: send the line "unsubscribe cgroups" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
