Red Hat

Hi everyone,

The last two days I'm researching results of NFS operations on Linux, and I noticed some time difference when read and write.
cat /proc/version :

Code:

Linux version 2.6.9-42.ELsmp (bhcompile@hs20-bc1-1.build.redhat.com) (gcc version 3.4.6 20060404 (Red Hat 3.4.6-2)) #1 SMP Wed Jul 12 23:27:17 EDT 2006

Here's how I'm testing :

Code:

time dd if=/dev/zero of=/opt/home/testfile bs=32k count=16384

- this will create 512M file. When writing operation is being done, the time reports : 14.962secs; when reading time is 7.313secs.
I've used mount options as follows :

Code:

mount -o vers=3 $my-hosts-here -o rsize=8192,wsize=8192

I was wondering if this behaviour is expected, in not, any comments or suggestions how to overcome this will be highly appreciated. Thanks.

After small digging and talk over NFS mailing list, I found out that this behavious is expected, and there are some issues with Red Hat and Dell software.