| From: | Andres Freund <andres(at)anarazel(dot)de> |
|---|---|
| To: | Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com> |
| Cc: | Konstantin Knizhnik <k(dot)knizhnik(at)postgrespro(dot)ru>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Active zombies at AIX |
| Date: | 2017-02-06 20:46:46 |
| Message-ID: | 20170206204646.vy3v5oycosjdxjbl@alap3.anarazel.de |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On 2017-02-06 15:39:10 -0500, Peter Eisentraut wrote:
> On 2/6/17 6:28 AM, Konstantin Knizhnik wrote:
> > I wonder why do we prohibit now configuration of Postgres without mmap?
>
> It's not really prohibited, but it's not something that people generally
> need, and we want to keep the number of configuration variations low.
I think that was a fairly bad call. Making it hard to use anything but
mmap (on mmap supporting platforms) caused a fair bit of trouble and
performance regressions on several platforms by now (freebsd reported it
fairly quickly, and now aix), all to avoid a trivial amount of code and
one guc.
FWIW, there's a patch somewhere in the archive making it configurable.
- Andres
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Bernd Helmle | 2017-02-06 20:51:33 | Re: LWLock optimization for multicore Power machines |
| Previous Message | Corey Huinker | 2017-02-06 20:43:22 | Re: \if, \elseif, \else, \endif (was Re: PSQL commands: \quit_if, \quit_unless) |