Date: Tue, 17 Mar 2009 14:59:21 +0100 From: Ivan Voras <ivoras@freebsd.org> To: freebsd-current@freebsd.org Subject: Re: A trio of problems Message-ID: <gpoacd$boc$1@ger.gmane.org> In-Reply-To: <D9950E0E-453C-464F-8C94-E5073AA99EE7@gid.co.uk> References: <gpmnba$3na$1@ger.gmane.org> <D9950E0E-453C-464F-8C94-E5073AA99EE7@gid.co.uk>
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[-- Attachment #1 --] Bob Bishop wrote: > Hi, > > On 16 Mar 2009, at 23:28, Ivan Voras wrote: > >> 1. I'm trying to start 1000 jails for demonstration purposes (a >> presentation), but I can reliably panic the kernel when somewhere >> between 400 and 600 jails are started. [etc] > > On 17 Mar 2009, at 01:37, Ivan Voras wrote: > >> ZFS doesn't influence it - the same problem happens without ZFS on the >> system (though I can create a few hundred more jails without ZFS before >> the kernel panics...). > > In which case, given how memory-hungry ZFS is, it looks like your > problem is with exhausting some memory resource. It did occur to me but if it is, why didn't it fail in an obvious way (e.g. kmem_map panics with ZFS), and how to tune it so if works? This is AMD64 with 0.5 GB - 1 GB memory in the Free bin when it panics. [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFJv6y5ldnAQVacBcgRAtOrAKCraQ2aUyLE0ryuu3PkLzqcIOyqOACbBWiK D9Mlln/EcU5sZscvF6KEZfc= =eNPs -----END PGP SIGNATURE-----
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