I've got a wierd issue with zfs compression. Whilst transferring data to a zfs
filesystem over smb/nfs the server becomes very slow and the clients sometimes
tim out. At the same time the server becomes completely unresponsive to pings.
Eventually the server returns to life after the write operation completes. SMB
traffic is the worst affected as the client just aborts the operation.
Initially I thought this was a network problem until I tried it on a filesystem
with no compression. Surely a dual Xeon 5130 giving 4 cores in total has enough
horsepower to be able to cope with this? Why should the network pings be
affected by compression, surely that's another thread isn't it? Any thoughts on
this would be greatly appreciated.
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