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From "James liu" <liuping.ja...@gmail.com>
Subject Re: about cache
Date Fri, 27 Apr 2007 02:06:02 GMT
u close queryResultCache if u set its size=1

hitratio will be zero if u do that.


i think these data when u test, is it right?



2007/4/27, Koji Sekiguchi <koji@r.email.ne.jp>:
>
> These numbers are a part of our real data.
> If you want to see positive number for evictions,
> you can:
>
> 1. set queryResultCache size to 1
> 2. restart Solr
> 3. issue two *unique* queries
> 4. see admin page
>
> At step 4, you should see hitratio: 0.00 and evictions: 1.
>
> Thanks,
>
> Koji
>
> James liu wrote:
> > These data is true ? hitration is 0??
> >
> > size=1?
> >
> > how do u test it?
> >
> > i think these data is impossible.
> >
> >
> >
> > 2007/4/27, Koji Sekiguchi <koji@r.email.ne.jp>:
> >>
> >> > 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
> >> >> >
> >> >>
> >> >>
> >> >
> >> >
> >>
> >>
> >
> >
>
>


-- 
regards
jl

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