Re: Any risk or overhead considerations for frequently executing queries against catalog tables?

2025-01-26 Thread Jeremy Schneider
> On Jan 25, 2025, at 2:42 PM, frits.hoogl...@gmail.com wrote: > > One thing I found is that because certain statistics are provided after a > query has run, measuring them in a fine grained way shows a peak for > something that in reality is taking place over a period of time. +1 I have al

Re: Lock contention high

2021-10-13 Thread Jeremy Schneider
Your settings are interesting, I'm curious what the goal is for this particular hammerdb exercise. A few comments inline On 10/12/21 00:35, Ashkil Dighin wrote: > > Postgres.conf used  in Baremetal > > maintenance_work_mem = 512MB            only a half GB memory for a

Re: Better, consistent instrumentation for postgreSQL using a similar API as Oracle

2021-10-07 Thread Jeremy Schneider
On Oct 7, 2021, at 19:38, Bruce Momjian wrote: > > On Thu, Oct 7, 2021 at 07:15:39PM -0700, Jeremy Schneider wrote: >> PostgreSQL added wait events starting in 9.6 and the last thing that's >> missing is an integrated way to trace or log them. A simple starting >

Re: Better, consistent instrumentation for postgreSQL using a similar API as Oracle

2021-10-07 Thread Jeremy Schneider
On 10/5/21 13:24, Peter Geoghegan wrote: > On Fri, Oct 1, 2021 at 1:06 PM Jeff Holt wrote: >> Now looking closely at postgreSQL, I see an opportunity to more quickly >> implement Oracle's current feature list. >> >> I've come to this point because I see many roadblocks for users who want to >> s

Re: Out of Memory errors are frustrating as heck!

2019-04-19 Thread Jeremy Schneider
pg_hint_plan extension might be able to force a plan. Also, I don’t know if perf probes & perf record/script could be useful for creating a log of all the calls to do memory allocation along with the unwound call stacks? Then analyzing that file? At least this can be done for a single process,

Re: impact of auto explain on overall performance

2019-03-14 Thread Jeremy Schneider
On 3/14/19 00:29, Stephan Schmidt wrote: > i’m currently working on a high Performance Database and want to make > sure that whenever there are slow queries during regular operations i’ve > got all Information about the query in my logs. So auto_explain come to > mind, but the documentation explici