On Sat, Feb 18, 2012 at 11:46 PM, Michael Butash <
michael@butash.net> wrote:
> Protocols vary widely for me. NFS is faster than CIFS by at least 40%, ftp
> is fast when the disk being written to isn't io-locked. Use the sysstat
> package and iostat to monitor disks. Tweaking with schedulers,
> tcp_rmem/wmem, qos, etc helps more. Windoze use perfmon to watch disk i/o
> and everything else.
Also, if it's NFS, you may want to look into upping your wsize and
rsize, as well as adding 'noatime,nodiratime' on both sides. The
former will help more with bigger files, the latter with smaller ones.
You may want to make sure you have current firmware and/or drivers for
the NICs, as well as upgrading the cables. You can flood massive pings
across the net to see if maybe it is the HDDs too, or (with nix on
both sides) dd /dev/zero to /dev/null with a block size matching your
wsize/rsize.
~Ben
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