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From Stefan Guggisberg <stefan.guggisb...@gmail.com>
Subject Re: Tomcat stops responding due to too many requests - using Jackrabbit
Date Fri, 13 Nov 2009 08:31:59 GMT
please don't cross-post! your question was perfectly appropriate
on the users list, no need to post it on the dev list as well...

cheers
stefan

On Fri, Nov 13, 2009 at 5:09 AM, rokham <somebodyiknow@gmail.com> wrote:
>
> Hi,
>
> Thanks a bunch for your reply. I learned yet another new thing :)
>
> I think my problem lied in my program's usage of sessions accessing
> Jackrabbit. I had a single session processing all the requests, but after
> reading a lot online, special thanks to this page:
>
> http://n4.nabble.com/Threads-in-jackrabbit-application-td520034.html#a520034
>
> I learned that each thread should have its own session. I made the changes
> and the performance shot up very significantly.
>
> I used to be able to add/update/query Jackrabbit with about 300-500 requests
> (over 5 minutes) and it would come to a halt. Now I was able to perform
> 7,200 operations (over about 40 minutes) and it was still up and running (no
> glitches felt). I still need to run longer and harsher tests on the
> application but I feel a lot more confident in its performance.
>
> Thanks again for your help,
>
> Rokham
>
>
> Marcel Reutegger wrote:
>>
>> Hi,
>>
>> On Thu, Nov 12, 2009 at 04:27, rokham <somebodyiknow@gmail.com> wrote:
>>> Note that all these requests are  WRITING  to Jackrabbit. I also just
>>> came
>>> across this article, claiming that "Jackrabbit isn’t actually able to
>>> handle
>>> concurrent queries well".
>>
>> do you mean JCR queries or SQL queries to the underlying database?
>>
>> jackrabbit is able to handle and execute concurrent JCR queries.
>>
>> however, writes to the underlying database are currently serialized.
>>
>> regards
>>  marcel
>>
>>
>
> --
> View this message in context: http://n4.nabble.com/Tomcat-stops-responding-due-to-too-many-requests-using-Jackrabbit-tp605488p620747.html
> Sent from the Jackrabbit - Dev mailing list archive at Nabble.com.
>

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