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From "Vijay (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (CASSANDRA-5582) Replace CustomHsHaServer with better oprtimized solution based on LMAX Disruptor.
Date Sun, 19 May 2013 20:49:16 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-5582?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13661645#comment-13661645
] 

Vijay edited comment on CASSANDRA-5582 at 5/19/13 8:48 PM:
-----------------------------------------------------------

Hi Pavel and All, 

I should say this patch is Awesome!

Overall i saw "> 30%" improvement at-least for most cases. The tests where done with 32
Core Intel 128GB and SSD Drives.
For 4 Nodes i was able to do 100K Reads Per Sec with this patch, before (trunk) it was less
than 50K. 

But i have to say it exposes other issues in the Storage Proxy layer... 
For example i was noticing write failing silently without hints been stored etc, I did some
digging and it was not due to this patch though.
                
      was (Author: vijay2win@yahoo.com):
    Hi Pavel and All, 

I should say this patch is Awesome!

Overall i saw "> 30%" improvement at-least for most cases. The tests where done with 32
Core Intel 128GB and SSD Drives.
For 4 Nodes i was able to do 100K Reads Per Sec with this patch, before (trunk) it was less
than 50K. 

But i have to say it exposes other issues in the Storage Proxy layer... For example i was
noticing write failing silently without hints been stored etc.
                  
> Replace CustomHsHaServer with better oprtimized solution based on LMAX Disruptor.
> ---------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-5582
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5582
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Pavel Yaskevich
>            Assignee: Pavel Yaskevich
>             Fix For: 2.0
>
>         Attachments: CASSANDRA-5582.patch, disruptor-3.0.0.beta3.jar, disruptor-thrift-0.1-SNAPSHOT.jar,
Pavel's Patch.rtf
>
>
> I have been working on https://github.com/xedin/disruptor_thrift_server and consider
it as stable and performant enough for integration with Cassandra. 
> Proposed replacement can work in both on/off Heap modes (depending if JNA is available)
and doesn't blindly reallocate things, which allows to resolve CASSANDRA-4265 as "Won't Fix".

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