Date: Wed, 10 Sep 2003 23:37:46 -0500 (CDT) From: Mike Silbersack <silby@silby.com> To: Vincent Jardin <vjardin@free.fr> Cc: net@freebsd.org Subject: Re: KMAP ENTRY limit Message-ID: <20030910233631.P67226@odysseus.silby.com> In-Reply-To: <200309110106.28960.vjardin@free.fr> References: <200309110106.28960.vjardin@free.fr>
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On Thu, 11 Sep 2003, Vincent Jardin wrote: > Hi, > > I get a FreeBSD 4.8 that reaches the limit of KMAP ENTRY whereas it remains > enough free memory. How is computed this limit and how can it be increased ? > > $ vmstat -z > ITEM SIZE LIMIT USED FREE REQUESTS > ... > KMAP ENTRY: 48, 7933, 130, 168, 1037 > (panic when SIZE >= LIMIT) > > Moreover, why should vm_map_entry_create() panic when zalloc() returns NULL ? > I think one can return NULL without panicing. Is it a bug or a feature ? > > Regards, > Vincent Heh, Tor just proposed raising the number of kmap entries allocated in a private thread. So, I think you'll see that change in soon enough. BTW, I hope size doesn't change as your machine is running. :) Mike "Silby" Silbersack
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