Bruce Momjian <bruce@momjian.us> writes:
> Tom Lane wrote:
>> Something that might also be interesting is an option to suppress
>> per-command ps_status reporting. On machines where updating ps status
>> takes a kernel call, there's now a pretty good argument why you might
>> want to turn that off and rely on pg_stat_activity instead.
> OK, can I get a timing report from someone with the title on/off that
> shows a difference?
IIRC, newer BSDen use a kernel call for this, so you should be able to
measure it on your own machine. Just tweak ps_status.c to force it to
select PS_USE_NONE instead of PS_USE_SETPROCTITLE to generate a
comparison case. I'll try it on my old HPUX box too.
regards, tom lane