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Message-ID: <002b01c472f1$c5d26000$99280518@Gene>
From: "Gene C. Ruzicka" <gcruzicka AT comcast DOT net>
To: <cygwin AT cygwin DOT com>
References: <001a01c47281$c8b02070$99280518 AT Gene> <20040726083046 DOT GA732 AT cygbert DOT vinschen DOT de>
Subject: Re: Setting SHMMAX in Cygwin
Date: Mon, 26 Jul 2004 02:20:19 -0700
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> 
> > Further comment: Uncovering this information was somewhat painful.
> 
> Didn't you read /usr/share/doc/Cygwin/cygserver.README and in turn
> /etc/cygserver.conf in the first place?  The configuration file contains
> the comment
> 
>   "kern.ipc.shmmaxpgs: Maximum pages available for XSI shared memory."
> 
> I thought that explains it.
> 
> 
> Corinna
> 
You are correct that those files explain how to set shmmaxpgs, and
I noticed that early on. The problem is that I wanted to set shmmax, NOT
shmmaxpgs per se, but it seems that the only place that spells out the relationship 
between the two parameters --- thereby suggesting the means to adjust shmmax ---
is in function shminit, which is rather deeply embedded in the source code tree:
file /usr/src/cygwin/winsup/cygserver/sysgv_shm.cc to be precise.

Gene

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