Hi Oliver, Unless you are network-bound you shouldn't see an improvement, verify that first.
J-D On Mon, Mar 19, 2012 at 8:58 AM, Oliver Meyn (GBIF) <[email protected]> wrote: > Hi all, > > I've been experimenting with PerformanceEvaluation in the last weeks and on a > whim thought I'd give channel bonding a try to see if it was networking > bandwidth that was acting as the bottleneck. It would seem that it's not > quite as trivial as it sounds, so I'm looking for other people's experience > in using HBase over bonded network channels. Specifically I'd be keen to > hear what mode you used [1], given that the Dell/Cloudera document [2] > suggests mode 6, and especially if you've resorted to mode 4 (802.3ad - > hardware). > > My initial experiments with mode 6 (after a bunch of flailing around in the > dark) suggest only nominal improvements when using PE in pure scan tests > (5-10%, which is probably within test error). > > Thanks, > Oliver > > [1] http://www.kernel.org/doc/Documentation/networking/bonding.txt > [2] PDF: > http://dell.cloudera.com/wp-content/uploads/2011/09/Dell_Cloudera_solution_for_Apache_Hadoop_Reference_Architecture_v1.2.pdf > > -- > Oliver Meyn > Software Developer > Global Biodiversity Information Facility (GBIF) > +45 35 32 15 12 > http://www.gbif.org >
