Ubuntu
linux package

  1. Bug #131094
  2. Comment #176

Comment 176 for bug 131094

Revision history for this message
theparanoidone (theparanoidone) wrote :

Greetings~

I am not sure if my team is suffering from the problems described in this thread... but we've been having very strange i/o problems.

We have also found a slight solution:

Compile the kernel with:
CONFIG_HZ_1000=y
CONFIG_HZ=1000

(as opposed to CONFIG_HZ_100=y CONFIG_HZ=100)

I say slight because things run *much* better... however, I don't think it's the complete fix. This has sped things up quite a bit in our test cases. (I have yet to run the ProcessSchedulerTest.cpp attached to this thread, but I will do this asap and report back our findings). Feel free to post your results if you beat me to it.

(For those interested in the scenario we have been facing... you can reference my forum post here... but I think it would be best if people keep their feedback here at bugs.launchpad.net... here's the scenario:
http://ubuntuforums.org/showthread.php?t=1039476
(I'll post feedback about our sysbench test on a 2.6.15 or early kernel as soon as I can)