Re: pgbench--new transaction type

On 13/06/11 06:38, Greg Smith wrote:
> On 06/11/2011 03:21 PM, Jeff Janes wrote:
>> I wouldn't expect IPC chatter to show up in profiling, because it
>> costs wall time, but not CPU time.  The time spent might be attributed
>> to the kernel, or to pgbench, or to nothing at all.
>>    
> 
> Profilers aren't necessarily just accumulating raw CPU time though.  If
> the approach includes sampling "what code is active right now?"
> periodically, you might be able to separate this out even though it's
> not using CPU time in the normal fashion.  I think you might just need
> to use a better profiler.

I got surprisingly insightful results in the past using
http://poormansprofiler.org/

I never used it with Postgres, but it might be worth to try.

J