[jboss-jira] [JBoss JIRA] Commented: (JBCACHE-800) Performance problem with TCP & RMI Cache loaders

[Tomas Topinka (JIRA)]

    [ http://jira.jboss.com/jira/browse/JBCACHE-800?page=comments#action_12345778 ] 
            
Tomas Topinka commented on JBCACHE-800:
---------------------------------------

As I said before, only wrap basic OutputStream and InputStream with Buffer is enough to increase performance rapidly ( 70x ).

output = new ObjectOutputStream( new BufferedOutputStream( sock.getOutputStream() ) );
input = new ObjectInputStream( new BufferedInputStream( sock.getInputStream() ) );

in TcpCacheServer.java and TcpDelegatingCacheloader.java ( same for RMI )

You also have to reset ObjectStream sometimes, otherwise you will get the OutOufMemeory exeption !
When you are sending really huge objects with many Lists and Maps, also reseting of ObjectStream increase performance rapidly, because cache in ObjectStream do not have to compare objects ( which is very time consuming for huge objects ).

> Performance problem with TCP & RMI Cache loaders
> ------------------------------------------------
>
>                 Key: JBCACHE-800
>                 URL: http://jira.jboss.com/jira/browse/JBCACHE-800
>             Project: JBoss Cache
>          Issue Type: Task
>      Security Level: Public(Everyone can see) 
>          Components: Cache loaders
>    Affects Versions: 1.4.0.SP1
>         Environment: All platforms
>            Reporter: Tomas Topinka
>         Assigned To: Manik Surtani
>             Fix For: 1.4.0.SP2, 2.0.0
>
>
> Using of basic Output/Input stream leads to fatal performance problems.
> Solution :
> Using of BufferedOutput/InputStream in TcpDelegatingCacheLoader/TcpCacheServer as well as in RMI increase the performace rapidly.

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