Hi Bram,
Sounds interesting and might be the answer - I will into this!
Thanks for your help,
Mark
On 25/01/11 12:49, Bram Luyten wrote:
Hi,
we made a page on SOLR performance optimization, with 2 hints:
- the SOLR autocommit feature
- Query warmup
Both hints, and some helper scripts can be found at:
http://atmire.com/statistics_performance.php
Make sure to post when these things don't make a difference.
best regards,
Bram Luyten
@mire
Technologielaan 9 - 3001 Heverlee - Belgium
2888 Loker Avenue East, Suite 305 - Carlsbad, CA 92010 - USA
atmire.com <http://atmire.com/> - Institutional Repository Solutions
2011/1/24 Claudia Jürgen <claudia.juer...@ub.tu-dortmund.de
<mailto:claudia.juer...@ub.tu-dortmund.de>>
Hi all,
we (1.6.0 jspui) noted similar behaviour, it takes a couple of minutes
to fulfill the display statistics requests.
The CPU load rises to ~ 100%. A second request will increase the
load to
~ 200% ...
Stopped requests will leave the cpu load at this high level.
We do run solr.optimize as cron job, but this seems to make no
difference.
We have set the stats visibility to admin only, because they are
not fit
for end user consumption, so it is no pressing issue for us, but I'm
curious about the reason for it.
Claudia
Am 24.01.2011 15:26, schrieb Timo Aalto:
> Hi Mark,
>
> I don't have an answer for you but we may be encountering
something similar
> - clicking the statistics link makes DSpace wait for ages only
to hand out
> the following error:
>
> Proxy Error
>
> The proxy server received an invalid response from an upstream
server.
> The proxy server could not handle the request GET
> /handle/10138/61/statistics.
>
> Reason: Error reading from remote server
>
> Is this similar to what you are getting? How big exactly is your
solr index?
> Ours is around 2.3G
>
> Also, we're not running Tomcat but a Jetty servlet container
instead.
>
> 2011/1/24 Mark Melia<mark.me...@enovation.ie
<mailto:mark.me...@enovation.ie>>
>
>> Hi all,
>>
>> We have a particularly large SOLR DB. This seems to be causing
problems
>> when users ask for a report as tomcat will timeout before the
report can
>> be rendered. Has anyone dealt with such performance issues with
SOLR
>> statistics. Does anyone have any strategies for dealing with it?
>>
>> Thanks,
>> Mark
>>
>>
>>
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>
>
>
>
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Claudia Juergen
Universitaetsbibliothek Dortmund
Eldorado
0231/755-4043
https://eldorado.tu-dortmund.de/
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