| From: | Peter Geoghegan <peter(at)2ndquadrant(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Simon Riggs <simon(at)2ndquadrant(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, PG Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Uh, I change my mind about commit_delay + commit_siblings (sort of) |
| Date: | 2012-06-01 19:15:19 |
| Message-ID: | CAEYLb_W5X20SuECdQPUBXO3TzbryV2DB3WbuYNPoM_G5ri-bzg@mail.gmail.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
This is a benchmark I performed on the same hardware, for tpc-b.sql,
with a commit_delay of 0 and 4000 for the patch:
http://tpcbdelay.staticloud.com/
There is a rather large improvement in throughput here. Robert
previously complained that our group commit implementation didn't do
very well on that benchmark. This seems to make all the difference.
--
Peter Geoghegan http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training and Services
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Florian Pflug | 2012-06-01 19:16:35 | Re: 9.2beta1, parallel queries, ReleasePredicateLocks, CheckForSerializableConflictIn in the oprofile |
| Previous Message | Tom Lane | 2012-06-01 19:14:00 | Re: 9.2beta1, parallel queries, ReleasePredicateLocks, CheckForSerializableConflictIn in the oprofile |