Hi Darren, The copy is going between these two machines:
Source: SunFire X4100 Dual 2.2Ghz Opteron (single core) 2GB RAM - SAN Attached (STK FLX210) - ZFS RAID-Z zpool Destination: SunFire T2000 8-Core 1.2GHz T1 w/ 8GB RAM - SAN Attached (STK FLX210) - ZFS RAID-Z zpool No compression is used in either filesystem, and the majority of the files between 120MB and 4GB. It's a set of about 20 files. Total transfer is 22GB. Both systems are attached via GigE on the same switch. The zfs send/receive via SSH averages about 3MB/s. The scp averages about 6MB/s. Hope this helps explain what's going on. Best Regards, Jason On 11/15/06, Darren J Moffat <[EMAIL PROTECTED]> wrote:
Jason J. W. Williams wrote: > Hi there, > > I've been comparing using the ZFS send/receive function over SSH to > simply scp'ing the contents of snapshot, and have found for me the > performance is 2x faster for scp. Can you give some more details about the configuration of the two machines involved and the ssh config. For example is compression used in the file system and/or with the ssh connection. How much data are you transfering ? Is is lots of small files or a few number of large files ? Can you give some actual numbers. > Has anyone else noticed ZFS send/receive to be noticeably slower? I haven't but then I haven't done much benchmarking since it was fast enough for what I needed. This is actually a very good pair of things to compare. It would also be interesting to compare rsync over ssh as well. -- Darren J Moffat
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