----- Original Message -----
| I am setting up a file server with CentOS 7. I'm seeing
| performance which is considerably slower than a similar
| server running CentOS 6.6. A 3Gb directory can be copied
| to/from the CentOS 6.6 server in about 50 seconds. The
| same directory takes about 270 seconds to copy to/from
| the CentOS 7 system.
|
| I see the same performance difference with NFS mounted
| file systems or using scp, so it doesn't appear to be
| an NFS issue. The MTU on the NICs on both systems is
| 1500, and changing it to 6000 on the CentOS 7 system had
| no effect.
|
| Anyone have any ideas what might cause this problem or
| how to fix it?
|
| --
| Michael Eager eager@xxxxxxxxxxxx
| 1960 Park Blvd., Palo Alto, CA 94306 650-325-8077
Do you have IPTables or FirewallD turned on? Are you using NFSv3 or NFSv4? Are these machines on the same switch? Any errors seen in `netstat -i` output? There could be lots of reasons for this problem from cabling to switch/host misconfiguration.
--
James A. Peltier
IT Services - Research Computing Group
Simon Fraser University - Burnaby Campus
Phone : 604-365-6432
Fax : 778-782-3045
E-Mail : jpeltier@xxxxxx
Website : http://www.sfu.ca/itservices
Twitter : @sfu_rcg
Powering Engagement Through Technology
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