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Date: Thu, 5 Dec 2013 14:11:44 +0500
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Subject: Re: SOLR 4 not utilizing multi CPU cores
From: Salman Akram <salman.akram@northbaysolutions.net>
To: Solr Group <solr-user@lucene.apache.org>
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More info on Cpu consumption: We have a server with 32 physical cores.

Same search when executed on SOLR 4.6 takes quite long and throughout only
uses 3% cpu (1 core).

Same search when executed on SOLR 1.4.1 takes much less time and on average
uses around 40-50% cpu.


On Thu, Dec 5, 2013 at 2:05 PM, Salman Akram <
salman.akram@northbaysolutions.net> wrote:

> I missed one imp piece of info. Due to large size we have indexed the date
> with Common Grams. All of the words in slow search are in common grams and
> when I debug it, they query is made properly with common grams.
>
> In debug all of the time is shown in process query time.
>
> Let me know what other info you need? Thanks
>
>
> On Thu, Dec 5, 2013 at 11:38 AM, Andrea Gazzarini <agazzarini@apache.org>wrote:
>
>> Hi, I did moreless the same but didn't get that behaviour...could you give
>> us more details
>>
>> Best,
>> Gazza
>> On 5 Dec 2013 06:54, "Salman Akram" <salman.akram@northbaysolutions.net>
>> wrote:
>>
>> > Hi,
>> >
>> > We recently upgraded to SOLR 4.6 from SOLR 1.4.1. Overall the
>> performance
>> > went down for large phrase queries. On some analysis we have seen that
>> > 1.4.1 utilized multiple cpu cores for such queries but SOLR 4.6 is only
>> > utilizing single cpu core. Any idea on what could be the reason?
>> >
>> > Note: We are not using SOLR Sharding.
>> >
>> > --
>> > Regards,
>> >
>> > Salman Akram
>> >
>>
>
>
>
> --
> Regards,
>
> Salman Akram
>
>


-- 
Regards,

Salman Akram

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