[infinispan-dev] Recommended Cluster Size for Replication Mode

[Faseela K]

Hi,

   I am using infinispan 5.2.3.
   My configuration is non-transactional, synchronous.
   With this configuration, is my replication supposed to perform better than distribution, for both reads and writes?
   My Cluster Size requirement is 4 nodes.
   And my application involves both reads and writes heavily.
   For better performance, are there any suggestions on the clustering modes/configurations?
   All my tests show, replication having better performance than distribution for reads as well as writes, with 4 nodes.

Thanks,
Faseela

-----Original Message-----
From: infinispan-dev-bounces at lists.jboss.org [mailto:infinispan-dev-bounces at lists.jboss.org] On Behalf Of Radim Vansa
Sent: Monday, August 12, 2013 6:13 PM
To: infinispan-dev at lists.jboss.org
Subject: Re: [infinispan-dev] Recommended Cluster Size for Replication Mode

Hi,

which version exactly do you use, 5.2.x, 5.3.x or 6.0.x? In 5.2 the replication mode was implemented separately from distribution mode and depending on your configuration (is it non-transactional synchronous?) the message control flow could differ. Since 5.3 replication mode is implemented in the same manner and the results should be more comparable.
I may be wrong here, but in 5.2.x concurrent writes to single key in non-transactional mode could result in entries being out of sync on some nodes (the writes could arrive at two nodes in different order). I think this cannot happen in >= 5.3 anymore.

Radim

On 08/12/2013 09:04 AM, Faseela K wrote:
> Hi,
>
>    With a 3 node cluster, even for "WRITES" my replication performance is better than distribution.
>    That's why I came across this doubt.
>    Could some body please clarify, why the behaviour is like this?
>
> Thanks,
> Faseela
>
> -----Original Message-----
> From: infinispan-dev-bounces at lists.jboss.org 
> [mailto:infinispan-dev-bounces at lists.jboss.org] On Behalf Of Mircea 
> Markus
> Sent: Friday, August 09, 2013 7:14 PM
> To: infinispan -Dev List
> Subject: Re: [infinispan-dev] Recommended Cluster Size for Replication 
> Mode
>
> On 6 Aug 2013, at 15:19, Faseela K <faseela.k at ericsson.com> wrote:
>
>>     What is the recommended cluster size for Replication Mode?
>>     Given 3 nodes, My replication configuration performs better than my distributed configuration.
>>     Just wanted to know, at what cluster size, distribution will perform better than replication.
> There's no straight answer, it depends on the read/write ratio and the amount of data you store.
> Replication will always perform better for reads as it won't involve a remote call to get the data.
> If you're mostly doing reads and your memory allows (replication is more memory consuming) then you should use replication.
> If the amount of data increases or you're doing more writes, distribution is the way to go.
>
> Cheers,
> --
> Mircea Markus
> Infinispan lead (www.infinispan.org)
>
>
>
>
>
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