> The problem with using a real file is that the filesystem is going to be
> flushing those dirty pages to disk, and that could really hurt
> performance.
definitely
> Actually, when I install Informix, I always have to modify the kernel to
> allow a larger amount of SYSV shared memory.  Maybe we just need to give
> people per-OS instructions on how to do that.  Under BSD/OS, I now have
> 32MB of shared memory, or 3900 8k shared buffers.
This I think would be the best solution. There are actually not that many systems 
with too low limits.
	AIX: per segment 256Mb max 10 segments per process (AIX 4.3 any number of segments)

Andreas
	 




Thu, 14 May 1998 11:46:46 +0200
Andreas Zeugswetter <andreas.zeugswetter@telecom.at>
Re: [HACKERS] mmap and MAP_ANON