8 Mar
2004
8 Mar
'04
11:22
On Sun, Mar 07, 2004 at 03:53:14PM -0800, Adrian Wu wrote:
Hi all,
I am building an opteron cluster. To increase node bandwidth, I am bonding 2 on-board ethernet nics in link aggregation (ie load-balancing) mode, mode 2. Although this was apparently done correctly, the bandwidth I got using netperf doesn't show anywhere near twice the performance compared to one nic.
Use multiple TCP streams instead of a single one. Load balancing a single connection over multiple links would lead to reordered packets, which most protocols - including TCP - do not really like. Bounding avoids that by hashing connections to specific interfaces. -Andi