Re: Freebsd 8.0 kmem map too small

On 5 May 2010, at 15:33, Pawel Jakub Dawidek wrote:

> Could you try to track down the commit that is causing your problems?
> Could you try 8-STABLE kernel from before r206815?

I do suspect something similar like that, and try to roll the kernel =
back too.
I was just fine with 8.0 with zfs-on-root till the last update when my =
typical workload (portupgrade every now and then, make world) resulted =
in kmem map too small panics and more sluggish performance (spending =
most time in zio->io_cv) during pkgdb -F on a i386 system with 2gb =
memory. I have 1gb memory sized amd64 vmware fusion vm's that run =
without incident using the same workload.

I had to bump KVA_PAGES to 512 and set vm.kmem_size=3D1024M to have this =
i386 system stable again. Prior to that I tried to lower the arc cache =
size but that resulted in a unresponsive system that I could not =
diagnose.

Regards,
	Ruben



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