Nataraj wrote: > On 03/01/2012 08:15 AM, m.roth at 5-cent.us wrote: >> We just moved a user, who deals with a *lot* of data, to a new server, >> since his old NFS home directory was on a disk that had started showing >> problems. >> >> Now, i/o is about six times slower, my manager reports. >> >> After a fair bit of googling, I started looking at tc and ip, and found >> the following: from ip address show, first, on the old home directory >> server, >> eth0: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast qlen 1000 >> then, on the new: >> eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen >> 1000 <snip> > Are you sure your performance problems are network related? Have you > measured performance of the filesystems on the two servers? You may > have a data alignment problem with your disk partitions. He did. It's not disk-related. mark