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From Manuel Le Normand <manuel.lenorm...@gmail.com>
Subject Re: solr-cloud performance decrease day by day
Date Fri, 19 Apr 2013 08:26:03 GMT
Can happen for various reasons.

Can you recreate the situation, meaning restarting the servlet or server
would start with good qTime and decrease from that point? How fast does
this happen?

Start by monitoring the jvm process, with oracle visualVM for example.
Monitor for frequent garbage collections or unreasonable memory peacks or
opening threads.
Then monitor your system to see if there's an io disk latency or disk usage
that increases in time, the writing queue to disk exploads, cpu load
becomes heavier or network usage's exeeds limit.

If you can recreate the decrease and monitor well, one of the above params
should pop up. Fixing it after defining the problem will be easier.

Good day,
Manu
On Apr 19, 2013 10:26 AM, "qibaoyuan" <qibaoyuan@gmail.com> wrote:

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