[CentOS] Jumbo frames problem with Realtek NICs?

[Ross Walker]

On Jun 25, 2011, at 3:05 PM, Emmanuel Noobadmin <centos.admin at gmail.com> wrote:

> Ironically, even at 1500MTU, I was able to hit the full 100+ MB/s
> speed available on a single Gigabit link so it seems my experiment was
> a bit futile.

Jumbo frames don't give higher throughput, but lower CPU.

I find standard frames give better throughput for 4K block sizes like one typically finds with file systems.

You really don't need to go to jumbo frames until you reach 10Gbps speed.

-Ross