15 Jul
2007
15 Jul
'07
12:09 p.m.
On Thursday 12 July 2007 20:23:02 Lee Revell wrote:
> ...a cool latency tracing feature...
Juuso Alasuutari wrote:
...What feature is this, and how does one use it?
I was also curious about this. Are you referring to
/proc/latency_trace? If so, I haven't been able to get any meaningful
output from it recently; I think it now just lists thread_exit() and not
a full stack trace like I think it's supposed to. I therefore can't
tell where any latency actually comes from, and all I know is which
process induced it. Are there any specific kernel options that must or
must not be enabled to get the full stack trace?
Thanks!
--
Steven Chamberlain
steven(a)pyro.eu.org