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From: Christoph Rohland <cr@sap.com>
To: Miles Lane <miles@megapathdsl.net>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: Re: 2.4.3-ac2 -- How do I determine if shm is being used?
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Date: 08 Apr 2001 14:31:47 +0200
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Hi Miles,

On Sat, 07 Apr 2001, Miles Lane wrote:
> I have mounted:
> 
> 	none on /var/shm type shm (rw)

Not necessary any more.

> 	tmpfs on /dev/shm type tmpfs (rw)

Also not necessary, but recommended for POSIX shm. BTW it will not
work with Linus' kernel. Type "shm" is supported by both versions.

> X Error of failed request: BadValue (integer parameter out of range
> for operation)
>   Major opcode of failed request:  146 (MIT-SHM)
>   Minor opcode of failed request:  3 (X_ShmPutImage)
>   Value in failed request:  0x1600001
>   Serial number of failed request:  35107
>   Current serial number in output stream:  35111

Ubfortunately this does not tell what it wanted to do.

> I'd like to check to make sure that shm is actually accessible
> to my programs.  Is there any easy way to do this?

ipcs should be your friend. Especially 'ipcs -lm'.

Greetings
		Christoph


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