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From "Stephanie Belton" <st...@zizou.net>
Subject RE: Performance tuning
Date Thu, 11 Jan 2007 22:27:40 GMT
The reason I am keeping a close eye on resource usage is that our traffic is
increasing by around 20% every month (currently over 400,000 page
impressions/day although not all of them are search queries!) and I want to
make sure we tackle any performance issues before it gets too late. I would
rather keep load balancing as a last resort due to cost implications.
 

-----Original Message-----
From: yseeley@gmail.com [mailto:yseeley@gmail.com] On Behalf Of Yonik Seeley
Sent: 11 January 2007 22:02
To: solr-user@lucene.apache.org
Subject: Re: Performance tuning

On 1/11/07, Stephanie Belton <steph@zizou.net> wrote:
> Thanks for that. I am sorry this isn't really Solr-related but how can I
> monitor the swapping if I can't rely on the output of the free command?
>
> Do you think I could still achieve any significant improvements by going
> through the performance tuning advice on the wiki?

Unfortunately, I think that's pretty old stuff.

People are normally concerned with:
  - the number of requests per second they can handle with their server
  - the average latency of requests (or median, 99 percentile, etc)

A goal of reducing CPU usage w/o looking at the other factors is
unusual, but if your query rate is very low, or your cache hit rate is
low, you could reduce or eliminate caching or autowarming.

-Yonik



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