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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-5306) Improve Dsnitch Severity
Date Mon, 25 Mar 2013 15:45:15 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-5306?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13612730#comment-13612730
] 

Jonathan Ellis commented on CASSANDRA-5306:
-------------------------------------------

iowait code looks good.  Still need to switch compaction info to throughput instead of load
/ size.

Other nits:
- Catch should log at info (warn?) that it couldn't open the stats file.  (Better: be smart
and only log warn if Linux.)
- Methods that are only used internally by BAM should be private
- empty catch should log ioexception at debug, just in case

                
> Improve Dsnitch Severity
> ------------------------
>
>                 Key: CASSANDRA-5306
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5306
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Vijay
>            Assignee: Vijay
>            Priority: Minor
>             Fix For: 1.2.4
>
>         Attachments: 0001-5306.patch
>
>
> This ticket is to continue the discussion in CASSANDRA-5255.
> Currently Dsnitch reports the Severity by calculating the amount of data compacting relative
to load of the node. 
> It will be nice to report Severity as a factor of load average, N/W Throughput and IO
Wait instead.
> http://www.hyperic.com/products/sigar seem to have it (But personally i have not used
it).

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