Should we simply disallow ZFS on FreeBSD/i386?
davidt at yadt.co.uk
Mon Jan 7 23:56:21 PST 2008
On Sun, 06 Jan 2008, Adam McDougall wrote:
> The amount of kmem required for a particular workload on any one machine can vary
> alot. Believe it or not, it is one of my AMD64 systems that I had to increase kmem
> to 1.6G to prevent kmem panics (it does some heavy nightly rsyncs); versus just
> having kmem set to 1G on a i386 system that constantly serves out files to the
> internet with various rsyncs running through the day.
Note that you're probably running into an integer overflow in arc.c
if vm.kmem_size is set to 1GB or higher on i386. As a result
kstat.zfs.misc.arcstats.size won't grow above
I posted to freebsd-fs about it, but haven't heard anything from pjd, yet.
Sadly, after fixing that problem I started encountering the kmem_map
too small panics.
More information about the freebsd-current