Ubuntu
linux package

  1. Bug #1346917
  2. Comment #15

Comment 15 for bug 1346917

Revision history for this message
Arie Skliarouk (skliarie) wrote :

The guest used lots of memory on NUMA machine. Turned out KSM merged some of the processes pages causing the particular processes to crawl.

Disabled KSM merge_across_nodes and it solved the problem:
echo 2 > /sys/kernel/mm/ksm/run && sleep 300 && cat /sys/kernel/mm/ksm/pages_shared
echo 0 > /sys/kernel/mm/ksm/merge_across_nodes && echo 1 > /sys/kernel/mm/ksm/run