cassandra-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
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 14:25:23 GMT

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

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

    Attachment: 4264.txt

Ah, that does help narrow it down.

Patch attached (against 1.1, looks like the code changes do apply to 1.0 as well) to include
supercolumn name and tombstone size in the denominator of liveRatio.
                
> 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
>            Priority: Trivial
>         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 

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

Mime
View raw message