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Kyle,
On 9/7/12 12:19 PM, kharp...@oreillyauto.com wrote:
> Chris:
>> Assembling the sessions into a Collection is likely to be very
>> fast, since it's just copying references around: the size of the
>> individual sessions should not matter. Of cours
Shanti Suresh wrote on 09/07/2012 12:37:34 PM:
> From: Shanti Suresh
> To: Tomcat Users List
> Date: 09/07/2012 12:44 PM
> Subject: Re: Tuning session replication on clusters
>
> Hi Kyle,
>
> Great testing, btw.
>
> So when you say "x5", did you cha
Shanti:
>So when you say "x5", did you change the settings as follows:
>rxBufAize="125940" (=> 25188 x 5)
Yes, x5 means default values (25188 and 43800) times 5. Each value was
extrapolated in the spreadsheet so you can see them there too.
>By any chance, have you analyzed a heapdump of Tomcat
Hi Kyle,
Great testing, btw.
So when you say "x5", did you change the settings as follows:
rxBufAize="125940" (=> 25188 x 5)
By any chance, have you analyzed a heapdump of Tomcat at periodic intervals
to see which class is hogging heap during the session replication?
Thanks.
On 5 Sep 2012, at 20:51, "llow...@oreillyauto.com"
wrote:
>
> I have a small cluster of 3 nodes running tomcat 6.0.24 with openJDK
> 1.6.0_20 on Ubuntu 10.04 LTS.
You should really consider upgrading Java.
While you're at it, try Tomcat 7.0.30 in your lab and have a look at
BackupManager (instea
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Kyle,
On 9/6/12 2:45 PM, kharp...@oreillyauto.com wrote:
> Chris:
>> One question: Plot those as X-Y in a spreadsheet and you'll see
>> that it's only a bit worse than linear, especially after 1500.
>> There's no enough data presented to draw an "expo
Rainer: Thanks for the input. I'll do some additional testing with the
sendAllSessions attributes, but my initial testing didn't show much gain.
If the rx/tx settings are already chunking up the session bytes into
smallish payloads then nothing I change with the sendAllSessions will
improve that.
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Kyle,
On 9/5/12 9:59 PM, kharp...@oreillyauto.com wrote:
> Alright, I did some more testing with another application and found
> the following:
>
> SessTime (sec 10 0.101 125 0.101 500 0.201 1500 0.201
> 1800
> 0.101 24000.
On 06.09.2012 16:57, Rainer Jung wrote:
On 06.09.2012 15:10, kharp...@oreillyauto.com wrote:
... This actually didn't surprise me after I
discovered how large the sessions were. Using JMX (VisualVM) I
watched the
Heap size on my two servers as I tested 7000 sessions. Heap climbed
approximatel
On 06.09.2012 15:10, kharp...@oreillyauto.com wrote:
... This actually didn't surprise me after I
discovered how large the sessions were. Using JMX (VisualVM) I watched the
Heap size on my two servers as I tested 7000 sessions. Heap climbed
approximately 1GB. When I restarted node2, I watched
Thanks all for replies (and for the jmap/jps idea, hadn't thought of that
for some reason).
I tried increasing the maxThreads on the NioReceviever and noticed no
performance gain. I then modified the poolSize on the Transport element to
100 and saw no performance gain. This actually didn't surpr
following to the Manager tag (stole this from the 5.5 docs; not
> even sure it's valid in 6.x):
> sendAllSessions="false"
> sendAllSessionsSize="500"
> sendAllSessionsWait="20"
>
>
> What has me
27;s happening feel free to set me straight.
>
> I'll check back later... I need to go beat some developers...
>
>
> Kyle Harper
>
>
>
>
> From: kharp...@oreillyauto.com
> To:"Tomcat Users List"
> Date:09/05/2012 07:55 PM
>
rs...
>
>
> Kyle Harper
>
>
>
>
> From: kharp...@oreillyauto.com
> To: "Tomcat Users List"
> Date: 09/05/2012 07:55 PM
> Subject:Re: Tuning session replication on clusters
>
>
>
> I'm working with Lee on this as well, so I c
#x27;. If anyone has any
more background on what's happening feel free to set me straight.
I'll check back later... I need to go beat some developers...
Kyle Harper
From: kharp...@oreillyauto.com
To: "Tomcat Users List"
Date: 09/05/2012 07:55 PM
Subject: Re:
licate the sessions in under 19 seconds. Any
ideas would be greatly appreciated. I have a full test environment to
simulate anything you might recommend.
Sincerely,
Kyle Harper
From: Igor Cicimov
To: Tomcat Users List
Date: 09/05/2012 07:12 PM
Subject:Re: Tuning sessi
On Thu, Sep 6, 2012 at 5:51 AM, wrote:
>
> I have a small cluster of 3 nodes running tomcat 6.0.24 with openJDK
> 1.6.0_20 on Ubuntu 10.04 LTS.
>
> I have roughly 5,000-6,000 sessions at any given time, and when I restart
> one of the nodes I am finding that not all sessions are getting
> replica
I have a small cluster of 3 nodes running tomcat 6.0.24 with openJDK
1.6.0_20 on Ubuntu 10.04 LTS.
I have roughly 5,000-6,000 sessions at any given time, and when I restart
one of the nodes I am finding that not all sessions are getting
replicated , even when I have the state transfer timeout se
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