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From "James liu" <liuping.ja...@gmail.com>
Subject Re: about cache
Date Fri, 27 Apr 2007 03:18:01 GMT
thk u..  im testing solr now.




2007/4/27, Koji Sekiguchi <koji@r.email.ne.jp>:
>
> I don't understand your question very well..
>
> If you follow the steps in my previous mail,
> you *can* see your cache evictions come to positive number.
> (I thought you wanted to see it)
>
> With your production system, you have to set
> the proper size rather than 1.
>
> regards,
>
> Koji
>
>
> James liu wrote:
> > 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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