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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-4264) live ratio limit 64.0 is way too low
Date Mon, 28 May 2012 14:27:23 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-4264?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jonathan Ellis updated CASSANDRA-4264:
--------------------------------------

         Reviewer: hsn
    Fix Version/s: 1.1.1
         Assignee: Jonathan Ellis
    
> live ratio limit 64.0 is way too low
> ------------------------------------
>
>                 Key: CASSANDRA-4264
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4264
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>    Affects Versions: 0.8.0
>         Environment: FreeBSD 8 - 64 bit
>            Reporter: Radim Kolar
>            Assignee: Jonathan Ellis
>            Priority: Trivial
>             Fix For: 1.1.1
>
>         Attachments: 4264.txt, patch-liveratio.txt
>
>
> Currently live ratio is limited to 64.0. This is way too low.
> WARN [MemoryMeter:1] Memtable.java (line 181) setting live ratio to maximum of 64 instead
of xxxx
> values seen in log are ofter larger than 64.0 limit. I propose to use 100.0 as new limit.
> ponto:(admin)log/cassandra>grep "to maximum of 64" system.log.1
>  WARN [MemoryMeter:1] 2012-02-03 00:00:19,444 Memtable.java (line 181) setting live ratio
to maximum of 64 instead of 64.9096047648211
>  WARN [MemoryMeter:1] 2012-02-08 00:00:17,379 Memtable.java (line 181) setting live ratio
to maximum of 64 instead of 68.81016452376322
>  WARN [MemoryMeter:1] 2012-02-08 00:00:32,358 Memtable.java (line 181) setting live ratio
to maximum of 64 instead of 88.49747308025415
>  WARN [MemoryMeter:1] 2012-02-09 00:00:08,448 Memtable.java (line 181) setting live ratio
to maximum of 64 instead of 76.2444888765154
>  WARN [MemoryMeter:1] 2012-02-10 18:18:52,677 Memtable.java (line 181) setting live ratio
to maximum of 64 instead of 142.22477982642255
>  WARN [MemoryMeter:1] 2012-02-20 00:00:53,753 Memtable.java (line 181) setting live ratio
to maximum of 64 instead of 88.19832386767173
>  WARN [MemoryMeter:1] 2012-03-02 10:41:00,232 Memtable.java (line 181) setting live ratio
to maximum of 64 instead of 419.9607495592804
>  WARN [MemoryMeter:1] 2012-03-07 14:13:15,141 Memtable.java (line 181) setting live ratio
to maximum of 64 instead of Infinity
>  WARN [MemoryMeter:1] 2012-03-08 00:01:12,766 Memtable.java (line 181) setting live ratio
to maximum of 64 instead of 94.20215772717702
>  WARN [MemoryMeter:1] 2012-03-09 00:00:38,633 Memtable.java (line 181) setting live ratio
to maximum of 64 instead of 98.54003447121715
>  WARN [MemoryMeter:1] 2012-03-11 00:00:13,243 Memtable.java (line 181) setting live ratio
to maximum of 64 instead of 193.14262214179965
>  WARN [MemoryMeter:1] 2012-03-14 00:00:26,709 Memtable.java (line 181) setting live ratio
to maximum of 64 instead of 103.88360138951437 

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