| From: | Andres Freund <andres(at)anarazel(dot)de> |
|---|---|
| To: | Heikki Linnakangas <hlinnaka(at)iki(dot)fi> |
| Cc: | Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com>, 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: | 2018-04-03 16:43:56 |
| Message-ID: | 20180403164356.wv36j24r4og5u44f@alap3.anarazel.de |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
Hi,
On 2018-04-03 19:38:42 +0300, Heikki Linnakangas wrote:
> I was just about to commit this, when I started to wonder: Do we need to
> worry about alignment? As the patch stands, it will merrily do unaligned
> 8-byte loads. Is that OK on ARM? It seems to work on the system I've been
> testing on, but I don't know. And even if it's OK, would it perform better
> if we did 1-byte loads in the beginning, until we reach the 8-byte boundary?
Architecture manual time? They're available freely IIRC and should
answer this.
- Andres
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Teodor Sigaev | 2018-04-03 16:50:02 | Re: Prefix operator for text and spgist support |
| Previous Message | Heikki Linnakangas | 2018-04-03 16:38:42 | Re: Optimize Arm64 crc32c implementation in Postgresql |