It may be IO, it's a good place to look
http://spyced.blogspot.com/2010/01/linux-performance-basics.html
Look at the logs, when messages are dropped you will see logs from StatusLogger
that include TP stats and some other things.
Cheers
-
Aaron Morton
Freelance Developer
@aaro
Thanks for your reply.
Nodes are equally balanced. and it is RandomPartitioner. I think that
machine is slower, Are you saying it is IO issue?
Daning
On Fri, Jan 6, 2012 at 10:25 AM, Mohit Anchlia wrote:
> Are all your nodes equally balanced in terms of read requests? Are you
> using RandomPart
Are all your nodes equally balanced in terms of read requests? Are you
using RandomPartitioner? Are you reading using indexes?
First thing you can do is compare iostat -x output between the 2 nodes
to rule out any io issues assuming your read requests are equally
balanced.
On Fri, Jan 6, 2012 at
Hi all,
We have 5 nodes cluster(0.8.6), but the performance from one node is way
behind others, I checked tpstats, It always show non-zero pending
ReadStage, I don't see this problem on other nodes.
What caused the problem? I/O? Memory? Cpu usage is still low. How to fix
this problem?
~/bin/node
