Re: Snapinstaller vs Solr Restart

[sunnyfr <jo...@gmail.com>]

Hi Otis,

Ok about that, but still when it merges segments it changes names and I've
no choice to replicate all the segment which is bad for the replication and
cpu. ??

Thanks


Otis Gospodnetic wrote:
> 
> Lower your mergeFactor and Lucene will merge segments(i.e. fewer index
> files) and purge deletes more often for you at the expense of somewhat
> slower indexing.
> 
> 
> Otis
> --
> Sematext -- http://sematext.com/ -- Lucene - Solr - Nutch
> 
> 
> 
> ----- Original Message ----
>> From: wojtekpia <wo...@hotmail.com>
>> To: solr-user@lucene.apache.org
>> Sent: Tuesday, January 6, 2009 5:18:26 PM
>> Subject: Re: Snapinstaller vs Solr Restart
>> 
>> 
>> I'm optimizing because I thought I should. I'll be updating my index
>> somewhere between every 15 minutes, and every 2 hours. That means between
>> 12
>> and 96 updates per day. That seems like a lot of index files (and it
>> scared
>> me a little), so that's my second reason for wanting to optimize nightly.
>> 
>> I haven't benchmarked the performance hit for not optimizing. That'll be
>> my
>> next step. If the hit isn't too bad, I'll look into optimizing less
>> frequently (weekly, ...).
>> 
>> Thanks Otis!
>> 
>> 
>> Otis Gospodnetic wrote:
>> > 
>> > OK, so that question/answer seems to have hit the nail on the head.  :)
>> > 
>> > When you optimize your index, all index files get rewritten.  This
>> means
>> > that everything that the OS cached up to that point goes out the window
>> > and the OS has to slowly re-cache the hot parts of the index.  If you
>> > don't optimize, this won't happen.  Do you really need to optimize?  Or
>> > maybe a more direct question: why are you optimizing?
>> > 
>> > 
>> > Regarding autowarming, with such high fq hit rate, I'd make good use of
>> fq
>> > autowarming.  The result cache rate is lower, but still decent.  I
>> > wouldn't turn off autowarming the way you have.
>> > 
>> > 
>> 
>> -- 
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>> Sent from the Solr - User mailing list archive at Nabble.com.
> 
> 
> 

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