Re: [HACKERS] Heh, the disappearing problem!

Bruce Momjian <maillist@candle.pha.pa.us>

From: Bruce Momjian <maillist@candle.pha.pa.us>
To: karl@mcs.net (Karl Denninger)
Cc: hackers@postgreSQL.org
Date: 1998-03-10T04:05:49Z
Lists: pgsql-hackers
> I've seen this same kind of behavior in a few other places as well; in
> places where you are doing reads and writes in a mixed environment (ie: read
> something, write something (typically in a different table) based on what 
> you read) performance of 6.3 has gone in the toilet.  Update jobs that used 
> to run in tens of seconds are requiring several minutes to complete now.
> 
> And again, we're not seeing much disk I/O during this period - but we *ARE*
> seeing a hell of a lot of CPU activity, almost all in user mode.

OK, how about using postgres -t option or profiling to get the function
using so much cpu?  This may help us tell where the problem lies.  Does
anyone else see such problems?  All other reports I hear was that 6.3
was faster.

-- 
Bruce Momjian                          |  830 Blythe Avenue
maillist@candle.pha.pa.us              |  Drexel Hill, Pennsylvania 19026
  +  If your life is a hard drive,     |  (610) 353-9879(w)
  +  Christ can be your backup.        |  (610) 853-3000(h)