2013-01-17 03:25:33 UTC
details at the bottom of the message). Pretty clean installation. No extra
services running. Main purpose is to be storage servers and nothing else.
Today I started migrating file systems from some old Open Solaris servers
to these Supermicro boxes and noticed the transfer to one of them was going
10x slower then to the other one (like 10GB/hour).
I was using zfs send/receive over ssh.
This server is doing pretty much nothing. Exporting 3 file systems via NFS
and only one of them is somewhat in use.
Running zpool iostat -v (attachment zpool-IOStat.png) shows 1,22K write
operations on the drives and 661 on the ZIL. Compare to the other server
(who is in way heavier use then this one) these numbers are extremely high.
Any idea how to debug any further?
Xeon E5-2620 2GHz 6-Core
LSI SAS9211-8i HBA
Storage pool drives: 3TB Hitachi SAS 7.2K
ZIL mirror and L2ARC: 80GB Intel SSD SATA 3Gb/s