| From: | Andres Freund <andres(at)anarazel(dot)de> |
|---|---|
| To: | Yuqi Gu <Yuqi(dot)Gu(at)arm(dot)com> |
| Cc: | Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Optimize Arm64 crc32c implementation in Postgresql |
| Date: | 2018-03-02 16:09:45 |
| Message-ID: | 20180302160945.blghdomljwvybqpc@alap3.anarazel.de |
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| Thread: | |
| Lists: | pgsql-hackers |
Hi,
On 2018-03-02 09:42:22 +0000, Yuqi Gu wrote:
> > Could you show whether it actually improves performance? Usually bulk loading data with parallel COPYs is a good way to hit this code path.
>
> The mini benchmark code:
I'd be more interested in a benchmark using postgres itself...
> > What's the availability of these headers and functions on non-linux platforms?
>
> This Arm64 optimization code only supports linux os so far.
That's not ok for postgres, unfortunately...
> What does it mean "stock autoconf" ?
>
> Should the configure script be made by specific version autoconf ?
Yes, it's the version from the autoconf project, rather than with
modifications by distributions. Don't worry about it, the committer can
take care of that.
- Andres
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