It seems that the cpuset cgroup is causing this. Using the script below
I get this output:
In cgroup:
Cpus_allowed: f
Cpus_allowed_list: 0-3
Outside cgroup:
Cpus_allowed: e
Cpus_allowed_list: 1-3
The script:
#!/bin/bash
set -e
export CGDIR=/sys/fs/cgroup/cpuset/cpusets-$$
function cleanup {
rmdir $CGDIR
}
trap cleanup EXIT
mkdir $CGDIR
cat $CGDIR/../cpuset.mems > $CGDIR/cpuset.mems
cat $CGDIR/../cpuset.cpus > $CGDIR/cpuset.cpus
/bin/bash -s <<'EOF'
set -e
echo "$$" > $CGDIR/tasks
echo "In cgroup:"
cat /proc/self/status | grep ^Cpus_allowed
EOF
echo
echo "Outside cgroup:"
cat /proc/self/status | grep ^Cpus_allowed
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https://bugs.launchpad.net/bugs/1623143
Title:
Linux container does not take same cpu configuration as kernet's hosts
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