cassandra-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Jon Hermes (JIRA)" <j...@apache.org>
Subject [jira] Updated: (CASSANDRA-1969) Use BB for row cache - To Improve GC performance.
Date Fri, 25 Feb 2011 20:53:21 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-1969?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jon Hermes updated CASSANDRA-1969:
----------------------------------

    Attachment: 1969-rollup-and-config.txt

Adds row_cache_provider to CFMetaData. 
When it's coming in via YAML/thrift/avro, it's a string. It then creates an IRowCacheProvider
in FBUtils like IPartitioner, et al.

Doesn't handle changes at runtime, but a new ticket should be opened for that.

> Use BB for row cache - To Improve GC performance.
> -------------------------------------------------
>
>                 Key: CASSANDRA-1969
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1969
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>         Environment: Linux and Mac
>            Reporter: Vijay
>            Assignee: Vijay
>            Priority: Minor
>         Attachments: 0001-Config-1969.txt, 0001-introduce-ICache-InstrumentingCache-IRowCacheProvider.txt,
0002-Update_existing-1965.txt, 0002-implement-SerializingCache.txt, 0002-implement-SerializingCacheV2.txt,
0003-New_Cache_Providers-1969.txt, 0003-add-ICache.isCopying-method.txt, 0004-Null-Check-and-duplicate-bb.txt,
0004-TestCase-1969.txt, 1969-rollup-and-config.txt, BB_Cache-1945.png, JMX-Cache-1945.png,
Old_Cahce-1945.png, POC-0001-Config-1945.txt, POC-0002-Update_existing-1945.txt, POC-0003-New_Cache_Providers-1945.txt
>
>
> Java BB.allocateDirect() will allocate native memory out of the JVM and will help reducing
the GC pressure in the JVM with a large Cache.
> From some of the basic tests it shows around 50% improvement than doing a normal Object
cache.
> In addition this patch provide the users an option to choose BB.allocateDirect or store
everything in the heap.

-- 
This message is automatically generated by JIRA.
-
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

Mime
View raw message