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8a1fd235ff
Problem: After Configure the Cgroup(CPU/MEM) limit to a gluster processes
resource(CPU/MEM) limits are not applicable to the gluster
processes.Cgroup limits are not applicable because all threads are
not moved into a newly created cgroup to apply restriction.
Solution: To move a gluster thread to newly created cgroup change the
condition in script
Change-Id: I8ad81c69200e4ec43a74f6052481551cf835354c
Fixes: bz#1764208
Signed-off-by: Mohit Agrawal <moagrawal@redhat.com>
117 lines
3.9 KiB
Bash
Executable File
117 lines
3.9 KiB
Bash
Executable File
#!/bin/bash
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USAGE="This script provides a utility to control CPU utilization for any
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gluster daemon.In this, we use cgroup framework to configure CPU quota
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for a process(like selfheal daemon). Before running this script, make
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sure that daemon is running.Every time daemon restarts, it is required
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to rerun this command to set CPU quota on new daemon process id.
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User can enter any value between 10 to 100 for CPU quota.
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Recommended value of quota period is 25. 25 means, kernel will allocate
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25 ms period to this group of tasks in every 100 ms period. This 25ms
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could be considered as the maximum percentage of CPU quota daemon can take.
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This value will be reflected on CPU usage of "top" command.If provided pid
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is the only process and no other process is in competition to get CPU, more
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than 25% could be allocated to daemon to speed up the process."
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if [ $# -ge 1 ]; then
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case $1 in
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-h|--help) echo " " "$USAGE" | sed -r -e 's/^[ ]+//g'
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exit 0;
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;;
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*) echo "Please Provide correct input for script."
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echo "For help correct options are -h or --help."
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exit 1;
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;;
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esac
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fi
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DIR_EXIST=0
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LOC="/sys/fs/cgroup/cpu,cpuacct/system.slice/glusterd.service"
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echo "Enter gluster daemon pid for which you want to control CPU."
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read daemon_pid
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if expr ${daemon_pid} + 0 > /dev/null 2>&1 ;then
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CHECK_PID=$(pgrep -f gluster | grep ${daemon_pid})
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if [ -z "${CHECK_PID}" ]; then
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echo "No daemon is running or pid ${daemon_pid} does not match."
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echo "with running gluster processes."
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exit 1
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fi
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else
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echo "Entered daemon_pid is not numeric so Rerun the script."
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exit 1
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fi
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if [ -f ${LOC}/tasks ];then
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CHECK_CGROUP=$(grep ${daemon_pid} ${LOC}/tasks)
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if [ ${CHECK_CGROUP} ]; then
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echo "pid ${daemon_pid} is attached with glusterd.service cgroup."
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fi
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fi
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cgroup_name=cgroup_gluster_${daemon_pid}
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if [ -f ${LOC}/${cgroup_name}/tasks ]; then
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CHECK_CGROUP=$(grep ${daemon_pid} ${LOC}/${cgroup_name}/tasks)
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if [ ${CHECK_CGROUP} ]; then
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val=`cat ${LOC}/${cgroup_name}/cpu.cfs_quota_us`
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qval=$((val / 1000))
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echo "pid ${daemon_pid} is already attached ${cgroup_name} with quota value ${qval}."
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echo "Press n if you don't want to reassign ${daemon_pid} with new quota value."
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DIR_EXIST=1
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else
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echo "pid ${daemon_pid} is not attached with ${cgroup_name}."
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fi
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fi
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read -p "If you want to continue the script to attach ${daemon_pid} with new ${cgroup_name} cgroup Press (y/n)?" choice
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case "$choice" in
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y|Y ) echo "yes";;
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n|N ) echo "no";exit;;
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* ) echo "invalid";exit;;
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esac
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systemctl set-property glusterd.service CPUShares=1024
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if [ ${DIR_EXIST} -eq 0 ];then
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echo "Creating child cgroup directory '${cgroup_name} cgroup' for glusterd.service."
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mkdir -p ${LOC}/${cgroup_name}
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if [ ! -f ${LOC}/${cgroup_name}/tasks ];then
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echo "Not able to create ${cgroup_name} directory so exit."
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exit 1
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fi
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fi
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echo "Enter quota value in range [10,100]: "
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read quota_value
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if expr ${quota_value} + 0 > /dev/null 2>&1 ;then
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if [ ${quota_value} -lt 10 ] || [ ${quota_value} -gt 100 ]; then
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echo "Entered quota value is not correct,it should be in the range ."
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echo "10-100. Ideal value is 25."
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echo "Rerun the sript with correct value."
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exit 1
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else
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echo "Entered quota value is $quota_value"
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fi
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else
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echo "Entered quota value is not numeric so Rerun the script."
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exit 1
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fi
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quota_value=$((quota_value * 1000))
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echo "Setting $quota_value to cpu.cfs_quota_us for gluster_cgroup."
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echo ${quota_value} > ${LOC}/${cgroup_name}/cpu.cfs_quota_us
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if ps -T -p ${daemon_pid} | grep gluster > /dev/null; then
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for thid in `ps -T -p ${daemon_pid} | grep -v SPID | awk -F " " '{print $2}'`;
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do
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echo ${thid} > ${LOC}/${cgroup_name}/tasks ;
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done
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if cat /proc/${daemon_pid}/cgroup | grep -w ${cgroup_name} > /dev/null; then
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echo "Tasks are attached successfully specific to ${daemon_pid} to ${cgroup_name}."
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else
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echo "Tasks are not attached successfully."
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fi
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fi
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