Hallo Henning, Freitag, 12. Oktober 2007, meintest Du:
HF> Hello Greg, HF> On Thu, Oct 11, 2007 at 03:13:16PM -0700, Greg Lindahl wrote: >> I'm thinking about using "balance-alb" channel bonding on a >> medium-to-large Linux cluster; does anyone have experience with this? >> It seems that it might generate a lot of arp replies if a switch >> fails. >> HF> We did some experiments with channel bonding. HF> The bond device inherits the MAC-address of the first HF> interface, meaning, it comes with a single MAC- and a single HF> IP-address. The bonding mode determines the load-balance of the HF> transition. That is not 100% correct. There are at least 6 mod that the bonding device of linux supports. balance-alb and balance-tlb are not assigning the same MAC to the interfaces in the bond. Therefore you don't need a switch that supports trunks or something similar. The problem ist that the performance of the bonding device under linux is far away from being optimal (as far as i saw). The round-robin or ad modes do not bring more than 140 to 150 MB/s out of 2 Gigabit links. The load balancing modi allow multiple connections to be fast but are not speeding up a single connection (each connection is limited to the speed of a single link in the bond). As a second point the balancing modes create a heavy load on the nodes and can interfere with a parallel computation. Regards Jan _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
