[infinispan-dev] Fast writes on one node with pessimistic locking

[Galder Zamarreño]

Radim,

We probably need more info, i.e:
- Number of nodes in the cluster
- How are you measuring the requests?
- Some TRACE logs to inspect the request dispatching? including key name space information
- What is the test that you're running? Where is the code?
… etc :)

If you can even create a unit test that replicates this issue, even better!! We have an archetype precisely designed to allow you to create Infinsipan multi node test cases:
https://docs.jboss.org/author/display/ISPN/Infinispan+Maven+Archetypes#InfinispanMavenArchetypes-WritingatestcaseforInfinispan

Otherwise, you have Martin's arquillian Infifnispan integration to help you create a test too.

Cheers,

On Sep 11, 2012, at 10:27 AM, Radim Vansa <rvansa at redhat.com> wrote:

> Yes, all the test runs get this result. Note that this occurs in library mode (not tested in client-server) - I should mention it in the first message.
> 
> Radim
> 
> ----- Original Message -----
> | From: "Manik Surtani" <manik at jboss.org>
> | To: "infinispan -Dev List" <infinispan-dev at lists.jboss.org>
> | Sent: Tuesday, September 11, 2012 9:44:20 AM
> | Subject: Re: [infinispan-dev] Fast writes on one node with pessimistic	locking
> | 
> | 
> | Consistently reproducible?
> | 
> | 
> | 
> | On 11 Sep 2012, at 08:26, Radim Vansa < rvansa at redhat.com > wrote:
> | 
> | 
> | Hi,
> | 
> | when I was looking on results of some tests targeted at explicit
> | locking I've found strange non-uniformity in write (put) speed with
> | pessimistic locking: One member of the cluster has always almost
> | twice as many requests per second compared to the others. Is there
> | some central point on one of the nodes (coordinator?) which would
> | explain this?
> | 
> | I am attaching the configuration file.
> | 
> | Radim Vansa
> | Quality Assurance Engineer
> | JBoss Datagrid
> | tel. +420532294559 ext. 62559
> | 
> | Red Hat Czech, s.r.o.
> | Brno, Purkyňova 99/71, PSČ 612 45
> | Czech Republic
> | 
> | <repl-sync-tx.xml> _______________________________________________
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> | 
> | 
> | 
> | 
> | 
> | --
> | Manik Surtani
> | manik at jboss.org
> | twitter.com/maniksurtani
> | 
> | 
> | 
> | Platform Architect, JBoss Data Grid
> | http://red.ht/data-grid
> | 
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> 
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--
Galder Zamarreño
galder at redhat.com
twitter.com/galderz

Project Lead, Escalante
http://escalante.io

Engineer, Infinispan
http://infinispan.org