[mod_cluster-issues] [JBoss JIRA] Assigned: (MODCLUSTER-157) SystemMemoryUsageLoadMetric returns wrong load metric
Paul Ferraro (JIRA)
jira-events at lists.jboss.org
Thu May 13 11:25:27 EDT 2010
[ https://jira.jboss.org/jira/browse/MODCLUSTER-157?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Paul Ferraro reassigned MODCLUSTER-157:
---------------------------------------
Assignee: Paul Ferraro (was: Jean-Frederic Clere)
> SystemMemoryUsageLoadMetric returns wrong load metric
> -----------------------------------------------------
>
> Key: MODCLUSTER-157
> URL: https://jira.jboss.org/jira/browse/MODCLUSTER-157
> Project: mod_cluster
> Issue Type: Bug
> Affects Versions: 1.0.3.GA, 1.1.0.CR2
> Reporter: Masafumi Miura
> Assignee: Paul Ferraro
> Fix For: 1.0.4.GA, 1.1.0.CR3
>
>
> When using SystemMemoryUsageLoadMetric, mod_cluster prioritizes dispatching requests to a machine which are using system memory higher than other machines. This loadbalancing behaviour is odd.
> SystemMemoryUsageLoadMetric[1] returns wrong load metric. The SystemMemoryUsageLoadMetric#getLoad() should not return "free / total". It should return "(total - free) / total" (= usage / total ) like HeapMemoryUsageLoadMetric[2].
> [1] http://anonsvn.jboss.org/repos/mod_cluster/tags/1.0.3.GA/src/main/java/org/jboss/modcluster/load/metric/impl/SystemMemoryUsageLoadMetric.java
> [2] http://anonsvn.jboss.org/repos/mod_cluster/tags/1.0.3.GA/src/main/java/org/jboss/modcluster/load/metric/impl/HeapMemoryUsageLoadMetric.java
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