Re: [CentOS] slow network throughput, how to improve?

On Wed, 24 Nov 2010, Rudi Ahlers wrote:

Yes, I used scp as a quick simple test. What would give me better performance though?

Well, anything that doesn't encrypt would be worth a shot.

Here's a basic scp to /dev/null scp /tmp/tempfile othermachine:/dev/null tempfile 100% 1000MB 37.0MB/s 00:27

Compare that with reading the same file over a basic NFS mount:

$ dd if=/nfs/tempfile of=/dev/null 1048576000 bytes (1.0 GB) copied, 10.3707 seconds, 101 MB/s

If you've got slow processors you'll find that scp -c blowfish is noticeably faster, but the faster the cores are, the less you'll notice an improvement.

jh