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From Koji Sekiguchi <k...@r.email.ne.jp>
Subject Re: about cache
Date Fri, 27 Apr 2007 01:00:43 GMT
 > if u try it. and u find it always 0

Are you talking about evistions?
If you are talking about evictions and it is always zero,
it shows that you have enough room in your cache in comparison to your load.

By way of example, when we did load test for "size==1 cache", we could see:

- queryResultCache-
lookups: 78626
hits: 72
hitratio: 0.00
inserts: 78554
evictioins: 1042748
size: 1

Hope this helps,

Koji


James liu wrote:
> if u try it. and u find it always 0
>
> 2007/4/26, Koji Sekiguchi <koji@r.email.ne.jp>:
>>
>> I think cumulative_ counters are the total count of successive
>> SolrIndexSearchers' cache.
>> For example, you have a registered searcher and you see:
>>
>> inserts: 1
>> cumulative_inserts: 1
>>
>> Then you update your index and do commit, you got a new searcher.
>> At this moment, non cumulative_ counters come to zero.
>> Then you search something and you could see:
>>
>> inserts: 1
>> cumulative_inserts: 2
>>
>> And if you have enough room for inserting new entries, evictions
>> might be zero. To see none zero evictions, you can set
>> a small size for queryResultCache and try to issue many unique queries.
>> For example, set the size to 1, then issue 2 unique queries, then
>> you can see evictions: 1.
>>
>> regards,
>>
>> Koji
>>
>>
>> James liu wrote:
>> > now i use admin gui to moniter cache config
>> >
>> > i don't know the difference betwin cumulative_ and no *cumulative_*
>> > ,,,like
>> > cumulative_inserts and inserts
>> >
>> > and i find evictions always show zero....i m curious when it will
>> > change and
>> > its meaning
>> >
>>
>>
>
>


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