The first search is slow

["Boole.Z.Guo (mis.cnsh04.Newegg) 41442" <Bo...@newegg.com>]

Hi,
I am using solr4.3.1.
When I search something, the first time is too slow. How can I improve this?

[cid:image001.png@01CEDA11.6F0AA1B0]
   The first time search


[cid:image002.png@01CEDA11.6F0AA1B0]
   The second time search

Best Regards,
Boole Guo
Software Engineer, NESC-SH.MIS
+86-021-51530666*41442
Floor 19, KaiKai Plaza, 888, Wanhangdu Rd, Shanghai (200042)
ONCE YOU KNOW, YOU NEWEGG.
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Re: The first search is slow

["michael.boom" <my...@yahoo.com>]

First time you run a query it's always slower, because it reads data from
disk.
After the first query, caches are built and stored in RAM memory, so the
second run of that query will hit caches and be sensibly faster.

To change how slow the first query is, play around with you firstSearcher
and newSearcher queries (see the example solrconfig.xml for more details)
Following link should provide you some more info on caching and what you can
do to improve the performance of your first query.
http://wiki.apache.org/solr/SolrCaching

If your hardware and setup allows it, you can try a trick, putting the
contents of your index in RAM directly:
cat .../<core>/data/index/* >/dev/null 



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Thanks,
Michael
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