From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
---|---|
To: | Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com> |
Cc: | Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Heikki Linnakangas <hlinnaka(at)iki(dot)fi> |
Subject: | Re: SerializeParamList vs machines with strict alignment |
Date: | 2018-10-02 00:01:54 |
Message-ID: | 4694.1538438514@sss.pgh.pa.us |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-hackers |
Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com> writes:
> On Tue, Oct 2, 2018 at 9:49 AM Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> Apparently the only somewhat-modern architecture that is resolutely
>> unaligned-unfriendly is MIPS.
> It's been a few years now since I worked on that architecture, but
> Sparc is somewhat-modern and resolutely unaligned-unfriendly. It's
> just that you can optionally install a trap handler that will do super
> slow non-atomic misaligned access in software instead of blowing up
> with SIGBUS. With the Sun toolchain you did that explicitly by
> building with -misalign (though it's possible that more recent
> compilers might be doing that without being asked?).
Interesting ... I suppose we'd have seen that on the Sparc critters,
except that they weren't running with force_parallel_mode = regress
like chipmunk is.
Now I'm tempted to propose that Amit commit *just* the test case
and not the fix, and wait a day to see which buildfarm critters fail.
regards, tom lane
From | Date | Subject | |
---|---|---|---|
Next Message | Michael Paquier | 2018-10-02 00:06:33 | Re: Add SKIP LOCKED to VACUUM and ANALYZE |
Previous Message | Andres Freund | 2018-10-01 23:59:43 | Re: snprintf.c hammering memset() |