Re: Performance monitor signal handler

From: Patrick Welche <prlw1(at)newn(dot)cam(dot)ac(dot)uk>
To: Jan Wieck <JanWieck(at)Yahoo(dot)com>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, PostgreSQL HACKERS <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Performance monitor signal handler
Date: 2001-03-17 20:29:56
Message-ID: 20010317202956.M22726@quartz.newn.cam.ac.uk
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On Fri, Mar 16, 2001 at 05:25:24PM -0500, Jan Wieck wrote:
> Jan Wieck wrote:
...
> Just to get some evidence at hand - could some owners of
> different platforms compile and run the attached little C
> source please?
...
> Seems Tom is (unfortunately) right. The pipe blocks at 4K.

On NetBSD-1.5S/i386 with just the highly conservative shmem defaults:

Pipe buffer is 4096 bytes
Sys-V message queue buffer is 2048 bytes

Cheers,

Patrick

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