> I have NFS sharing a ZFS pool that VMware esxi stores files on. When > put under stress (an OS installation, but not Linux compilation), the > NFS server locks, spiking to 100% CPU usage. Not even kill -KILL can > stop the process, so rebooting is required. > > PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND > 885 root 4 44 0 5804K 988K CPU2 0 239:39 100.00% nfsd > > Other people have run into this problem, but I never found a solution. > I'm running 8.1-PRERELEASE on amd64, but I think others have seen the > problem on 8.1-RELEASE. > > zpool status reports that the pool is healthy, so that's not it. My > only two ideas are hosting on something other than ZFS and trying to > reproduce it with a lot of big, random NFS requests. Any other ideas? > I believe it is patched in head/current. A compatible patch is at: http://people.freebsd.org/~rmacklem/freebsd8.1-patches/replay.patch
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