Date: Wed, 25 Jan 2012 03:59:13 -0800 From: Jeremy Chadwick <freebsd@jdc.parodius.com> To: Michel Le Cocq <miconof80.list@gmail.com> Cc: Garrett Cooper <yanegomi@gmail.com>, freebsd-fs@FreeBSD.org Subject: Re: kern/146528: [zfs] Severe memory leak in ZFS on i386 Message-ID: <20120125115913.GA30376@icarus.home.lan> In-Reply-To: <20120125084040.GA2831@e4310> References: <201110091940.p99JeJIc095036@freefall.freebsd.org> <20120125084040.GA2831@e4310>
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On Wed, Jan 25, 2012 at 09:40:50AM +0100, Michel Le Cocq wrote: > Before upgrade, I must use some mana things in my /boot/loader.conf > > vm.kmem_size="330M" > vm.kmem_size_max="330M" > vfs.zfs.arc_max="40M" > vfs.zfs.vdev.cache.size="5M" > > With this config my server was not so stable. > > Some days it work perfectly, some others it freeze with kmem_malloc > kmem_map too small. > Without this mana it freeze really often. You should remove the vm.kmem_size and vm.kmem_size_max settings from loader.conf. (This is at least the case for amd64, and I'm pretty sure the same advice applies to i386. The lack-of need for adjusting either of these variables has existed for, I think, a year now.) The other options you have specific to ZFS can stay. Also, your ARC maximum is extremely low; can you please increase this to something more reasonable, say, 256MBytes or 384MBytes? This may explain the "freeze really often" clause, assuming you mean "the system suddenly pauses, takes a while, then recovers". If by "freeze really often" you mean "locks up hard", that's a different problem. If the freezing is intermittent (and recovers), are you using dedup or compression? If so, please cease. -- | Jeremy Chadwick jdc@parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, US | | Making life hard for others since 1977. PGP 4BD6C0CB |
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