Re: Patch to show individual statement latencies in pgbench output

Florian Pflug wrote:
> To be able to asses the performance characteristics of the different wal-related options, I patched pgbench to show the average latency of each individual statement. The idea is to be able to compare the latency of the COMMIT with the ones of the other statements.
>   

That's an interesting idea, particularly given that people don't really 
understand where the time is going in the standard pgbench test.  Your 
first bit of review feedback is that this would have to be something you 
could toggle on and off, there's no way most people want to pay this 
penalty.  If you submit a new patch with a command line option to enable 
this alternate logging format and add the result to 
https://commitfest.postgresql.org/action/commitfest_view?id=6 , you can 
put my name down as a reviewer and I'll take a deeper look at it as part 
of that.

-- 
Greg Smith  2ndQuadrant US  Baltimore, MD
PostgreSQL Training, Services and Support
greg@2ndQuadrant.com   www.2ndQuadrant.us