Thanks Michael!!!
Which version of MarkLogic is this? - MarkLogic 6.0-3.2
How many CPU cores are on each host? ML1 to ML4 - 2CPUs & 16 cores and ML5 - 2
CPUs & 32 cores
Local Disk failover enabled between ML1 to Ml3 and Ml4 to Ml5 (as ml4 & Ml5
have been added recently)
How much RAM is on each host? - 64GB
How are you measuring CPU utilization? - Linux commands once response time
increases and infra team tell us. it seems thye are using zenoss
My concern is why ML4 CPU is maxed out even it is not having much data nor
xQuery is being executed on this node.
Could it be the reason as Ml5 is highly configured than Ml4 and fail over is
enabled between both?
Offcourse xQuery execution can be one of the case, these will be taking time
however Heavy load & data is on Ml1 to Ml3 even their CPU usages is around 30%.
Thanks,
JJ
________________________________
From: indar verma <send2i...@yahoo.co.in>
To: "general@developer.marklogic.com" <general@developer.marklogic.com>
Sent: Sunday, 29 September 2013 11:18 PM
Subject: One node CPU utilization maxed out but others not in a 5 node cluster
once load increases
Hi All,
We have a 5 nodes clustered environment and data is in TBs. Ml1 to Ml3 are
evaluator nodes & data nodes and Ml4 & Ml5 are data nodes only for now.
Once loads increase the Ml4 CPU utilization going to become maximum and other 4
nodes are normal around 30% utilization.
Due to Ml4 CPU maxed out, page is not rendering, some queries are giving time
out.
Also one thing, more data processing is not being happen in Ml4 than other
nodes.
Could you please somebody help me to resolve this? what can be the root cause
for this problem? what should we improve?
Thanking in advance!!!
JJ
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