Date: Wed, 25 Oct 2006 10:31:15 -0700 From: Jeremy Chadwick <freebsd@jdc.parodius.com> To: Stefan Bethke <stb@lassitu.de> Cc: FreeBSD Stable <freebsd-stable@freebsd.org> Subject: Re: panic: kmem_map too small Message-ID: <20061025173115.GA97447@icarus.home.lan> In-Reply-To: <CD619308-6B7B-4B68-B011-CE979D67E0C1@lassitu.de> References: <CD619308-6B7B-4B68-B011-CE979D67E0C1@lassitu.de>
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On Wed, Oct 25, 2006 at 07:17:26PM +0200, Stefan Bethke wrote: > We're consistely getting this panic even under smallish loads. I've > experimented with various values for VM_KMEM_SIZE_MAX (384, 512, 768 > and 1024 MB), but the boxes are still panicking after even short > periods (a few hours) just doing a buildworld, a few ports compiles, > or even when logging out of the console(?). > > Would logging vm.zone every few minutes help detecting a kernel > memory leak? > > I'm at a complete loss as to the actual cause of these. The ACPI > errors precede the panic below by only a few seconds, so I'd guess > they're a symptom, not a cause. We've tried with ACPI disabled in > the BIOS, but we also got these panics, so we re-enabled it. > > The hardware is a Tyan GT20 (2865) with a single-core Opteron, two > gigs of RAM and two or three SATA disks. > > Any ideas? Try tuning memory parameters via loader.conf: $ cat /boot/loader.conf # Increase maximum allocatable memory on a process to 768MB. # We don't choose 2GB (our amount of RAM) since that would # exhaust all memory, and result in a kernel panic. Maximum # stack size is still set to 128MB. One can view these # settings using limits(1). # kern.maxdsiz="805306368" kern.dfldsiz="805306368" kern.maxssiz="134217728" Adjusting kern.maxfiles and kern.maxfilesperproc might also help. -- | Jeremy Chadwick jdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |
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