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Date:      Thu, 10 Jul 1997 09:22:21 +0200
From:      j@uriah.heep.sax.de (J Wunsch)
To:        hackers@FreeBSD.ORG
Subject:   Re: no SYSVSHM in GENERIC now..
Message-ID:  <19970710092221.JN34121@uriah.heep.sax.de>
In-Reply-To: <199707091923.MAA02400@hub.freebsd.org>; from Andrew Atrens on Jul 9, 1997 15:16:00 -0500
References:  <199707091923.MAA02400@hub.freebsd.org>

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As Andrew Atrens wrote:

> Does the X-server run any faster with MIT-SHM than without?

No, it doesn't.  The only thing is that it disables the MIT-SHM
extension if no SYSVSHM is available in the kernel (it catches SIGSYS,
and attempts to issue a shmget() call).

MIT-SHM is an extension that must be explicitly used by the clients,
and AFAIK only few clients actually use it.  It is not to be confused
with a local transport via shared memory (which doesn't exist in any
XFree86 server, and to the best of my knowledge, neither in the Xig
server).

-- 
cheers, J"org

joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)



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