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https://issues.apache.org/jira/browse/CASSANDRA-9683?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14618168#comment-14618168
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Loic Lambiel commented on CASSANDRA-9683:
-----------------------------------------
Sorry for the response delay.
We're running a 3 nodes cluster with C* 2.1.8-tentative version on 1 DC. The
hosts are physical and connected on the same network switch:
- Ubuntu 12.04 (3.13 Kernel)
- RAM 32GB
- 4 Cores (+4 HT)
- SSD for OS and logs
- 8* JBOD SATA drives for data
- Java(TM) SE Runtime Environment (build 1.7.0_80-b15)
cat /etc/default/cassandra:
MAX_HEAP_SIZE="8G"
HEAP_NEWSIZE="800m"
JVM_OPTS="$JVM_OPTS
-Dcassandra.metricsReporterConfigFile=metrics-reporter-config.yaml"
We're using stock cassandra.env (attached)
The consistency level is at quorum.
On this cluster we're doing:
- Write a few kb in a CF, read back the data and then delete, this every minute
- Write and delete ~300mb once a day
I'm going to perform some thread dump to see if I could find something.
Thanks for your support !
> Get mucher higher load and latencies after upgrading from 2.1.6 to cassandra
> 2.1.7
> ----------------------------------------------------------------------------------
>
> Key: CASSANDRA-9683
> URL: https://issues.apache.org/jira/browse/CASSANDRA-9683
> Project: Cassandra
> Issue Type: Bug
> Environment: Ubuntu 12.04 (3.13 Kernel) * 3
> JDK: Oracle JDK 7
> RAM: 32GB
> Cores 4 (+4 HT)
> Reporter: Loic Lambiel
> Assignee: Ariel Weisberg
> Fix For: 2.1.x
>
> Attachments: cassandra.yaml, cfstats.txt, os_load.png,
> pending_compactions.png, read_latency.png, schema.txt, system.log,
> write_latency.png
>
>
> After upgrading our cassandra staging cluster version from 2.1.6 to 2.1.7,
> the average load grows from 0.1-0.3 to 1.8.
> Latencies did increase as well.
> We see an increase of pending compactions, probably due to CASSANDRA-9592.
> This cluster has almost no workload (staging environment)
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