| From: | Ants Aasma <ants(at)cybertec(dot)at> |
|---|---|
| To: | Ants Aasma <ants(at)cybertec(dot)at> |
| Cc: | Jeff Davis <pgsql(at)j-davis(dot)com>, Bruce Momjian <bruce(at)momjian(dot)us>, Greg Smith <greg(at)2ndquadrant(dot)com>, Heikki Linnakangas <hlinnakangas(at)vmware(dot)com>, Simon Riggs <simon(at)2ndquadrant(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Enabling Checksums |
| Date: | 2013-04-09 07:39:35 |
| Message-ID: | CA+CSw_ugiW91Qeg+7k=PDvtxbo+Q95D4eufPsNutvQHKHyr2UQ@mail.gmail.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On Tue, Apr 9, 2013 at 5:35 AM, Ants Aasma <ants(at)cybertec(dot)at> wrote:
> Quick bench results on the worst case workload:
> master no checksums: tps = 15.561848
> master with checksums: tps = 1.695450
> simd checksums: tps = 14.602698
For reference, results for the generic version, with default build
params and with the ones required for vectorizing:
simd checksums generic: tps = 6.683347
simd checksums generic vectorized: tps = 12.755203
It would be great if we could hint other platforms about the
vectorization possibilities. Unfortunately I'm not strong enough in
portability fu to come up with the necessary incantations to make all
compilers dance to my will.
Regards,
Ants Aasma
--
Cybertec Schönig & Schönig GmbH
Gröhrmühlgasse 26
A-2700 Wiener Neustadt
Web: http://www.postgresql-support.de
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Hannu Krosing | 2013-04-09 07:42:29 | Re: Inconsistent DB data in Streaming Replication |
| Previous Message | Jeff Davis | 2013-04-09 07:37:43 | Re: corrupt pages detected by enabling checksums |