Messages in this thread | | | Date | Fri, 15 Feb 2008 21:59:16 -0800 | From | Andrew Morton <> | Subject | Re: [PATCH 1/8] Scaling msgmni to the amount of lowmem |
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On Mon, 11 Feb 2008 15:16:47 +0100 Nadia.Derbey@bull.net wrote:
> [PATCH 01/08] > > This patch computes msg_ctlmni to make it scale with the amount of lowmem. > msg_ctlmni is now set to make the message queues occupy 1/32 of the available > lowmem. > > Some cleaning has also been done for the MSGPOOL constant: the msgctl man page > says it's not used, but it also defines it as a size in bytes (the code > expresses it in Kbytes). >
Something's wrong here. Running LTP's msgctl08 (specifically: ltp-full-20070228) cripples the machine. It's a 4-way 4GB x86_64.
http://userweb.kernel.org/~akpm/config-x.txt http://userweb.kernel.org/~akpm/dmesg-x.txt
Normally msgctl08 will complete in a second or two. With this patch I don't know how long it will take to complete, and the machine is horridly bogged down. It does recover if you manage to kill msgctl08. Feels like a terrible memory shortage, but there's plenty of memory free and it isn't swapping.
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