[ovs-dev] [PATCH] timeval: Add new "backtrace" appctl command.

Ethan Jackson ethan at nicira.com
Mon Oct 15 02:33:34 UTC 2012

Thanks for review this over the weekend.  I'll merge shortly.


On Sun, Oct 14, 2012 at 7:21 PM, Ben Pfaff <blp at nicira.com> wrote:
> On Sun, Oct 14, 2012 at 06:50:56PM -0700, Ethan Jackson wrote:
>> Often, it can be quite difficult to debug performance issues in
>> Open vSwitch.  Typically one needs to run something like gprof, but
>> that requires rebuilding and installing on the affected system
>> which is often problematic.  This patch adds a light weight
>> profiling solution which can be used in these situations.  The
>> ovs-appctl backtrace command prints out backtraces taken at 100
>> millisecond intervals over a 5 second period of time.  It is
>> currently only supported on systems which have the execinfo library
>> and enable time caching.
>> Signed-off-by: Ethan Jackson <ethan at nicira.com>
> Looks good, thank you!

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