[DRBD-user] bonding more than two network cards still a bad idea?

J. Ryan Earl oss at jryanearl.us
Fri Oct 1 04:30:45 CEST 2010

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.

On Thu, Sep 30, 2010 at 11:22 AM, Bart Coninckx <bart.coninckx at telenet.be>wrote:

> I just saw bonnie++ hit more than 250 MB/sec while my bonded gigabit gives
> me
> about 160 MB/sec with 30% TCP header penalty, so looking into this is
> useful.

Forgot to mention, that bonnie++ number is likely involving pagecache and
not actual to-storage throughput.  Have you increased your TCP windows
(buffers), etc?  You should literally be able to get double throughput from
two NICs over one.

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