Phil Radden wrote:
I have a cluster currently containing about 230 dual-CPU nodes, and as soon as gmetad is pointed at it, the load on the gmetad box rockets. It appears that it's the rrd updates which are causing it, because the CPU is still mainly idle. The particular partition holding the rrdbs is on ext3 (with data=ordered) in case that matters (kjournald keeps joining gmetad at the top of 'top's output).
change this to data=writeback, and the load will drop. ie, from: LABEL=/var /var ext3 defaults 1 2 to: LABEL=/var /var ext3 defaults,data=writeback 1 2 and the load will drop to nothing. thomas
