| From: | Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com> |
|---|---|
| To: | Heikki Linnakangas <hlinnaka(at)iki(dot)fi> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Andres Freund <andres(at)anarazel(dot)de>, Yuqi Gu <Yuqi(dot)Gu(at)arm(dot)com>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Optimize Arm64 crc32c implementation in Postgresql |
| Date: | 2018-04-04 12:00:14 |
| Message-ID: | CAEepm=0AH=z81xcciH37VCMKNhy7sxXn0eDJaL+FRdDV-z_VtQ@mail.gmail.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On Wed, Apr 4, 2018 at 11:47 PM, Thomas Munro
<thomas(dot)munro(at)enterprisedb(dot)com> wrote:
> BTW I did some googling just now and found out that some libraries use
> a technique they call "CPU probing": just try it and see if you get
> SIGILL. Is that a bad idea for some reason? Here is a quick hack --
> anyone got an ARM system without crc that they could test it on?
Hmm. I suppose there must be some horrendous non-portable 'step over
the instruction' bit missing in the signal handler. Probably not a
great idea.
--
Thomas Munro
http://www.enterprisedb.com
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Stephen Frost | 2018-04-04 12:18:55 | Re: Add default role 'pg_access_server_files' |
| Previous Message | Nikhil Sontakke | 2018-04-04 11:58:54 | Re: [HACKERS] logical decoding of two-phase transactions |