On Tue, Feb 1, 2011 at 7:40 AM, Ted Yu <[email protected]> wrote: > Thanks for the reminder. > > After adjusting swappiness to 2 on each node, I see: > http://pastebin.com/tFcAj7rw > > Client buffer is now 10MB. > But map tasks seem to be slower than before.
The output of vmstat doesn't show anything useful here, the machine is 100% idle up until the 3rd section where it's reading a bit from disk, but it's still mostly idle. Something else that we don't see from this trace is amiss. -- Benoit "tsuna" Sigoure Software Engineer @ www.StumbleUpon.com
