Ubuntu
linux package

  1. Bug #755066
  2. Comment #4

Comment 4 for bug 755066

Revision history for this message
Chris Van Hoof (vanhoof) wrote :

I did some testing on this issue, and initially thought I had a culprit with mkfs.ext4:

http://people.canonical.com/~vanhoof/lazy_itable_init_testing_plus_dirty/

However it has been proven to occur even with a more generic file copy operation.

I was able to grab some perf top results today during an instance of this lockup:

http://people.canonical.com/~vanhoof/lazy_itable_init_testing_plus_dirty/perftop/

Which does show a large spike in shrink_slab when this hits.