Kris Kennaway wrote:
On Thu, May 25, 2006 at 06:01:30PM +0200, Arno J. Klaassen wrote:
I get a very easy to reproduce panic on 6.1-STABLE :
/etc/periodic/weekly/310.locate panics with
panic: kmem_malloc(4096): kmem_map too small: 335544320 total allocated
It looks like you are using a malloc-backed md and you do not have
enough RAM to handle the size. Perhaps tmpmfs does not use swap
backing, as it is supposed to?
If you look in /etc/defaults/rc.conf you'll note that malloc-backed is
the default:
tmpmfs_flags="-S -M" # Extra mdmfs options for the mfs /tmp
I don't really understand why malloc-backed is the default as the
performance difference between malloc- and swap-backed md's was resolved
long ago:
http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/dev/md/md.c#rev1.117
Ah, it looks like this was just for compatibility:
http://www.freebsd.org/cgi/cvsweb.cgi/src/etc/defaults/rc.conf#rev1.259
I am currently running with the following in /etc/rc.conf and haven't
experienced any problems:
tmpmfs_flags="-S -o async"
-Jonathan
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