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Yuki Morishita commented on CASSANDRA-3668: ------------------------------------------- Manish, sstableLloader loads sstables by streaming data files to the cluster, and from 1.0, CASSANDRA-3080 introduced throttling for streaming. By default, {{stream_throughput_outbound_megabits_per_sec}} is set to 400 Mbps or 50MB/sec. You can turn off throttling by setting 0 inside cassandra.yaml. You can observe the behavior of throttling by changing log level to TRACE or DEBUG in conf/log4j-tools.properties, and look for log with the term "Throttle". (Sample output for throttling is attached in CASSANDRA-3080.) > Performance of sstableloader is affected in 1.0.x > ------------------------------------------------- > > Key: CASSANDRA-3668 > URL: https://issues.apache.org/jira/browse/CASSANDRA-3668 > Project: Cassandra > Issue Type: Bug > Components: API > Affects Versions: 1.0.7 > Reporter: Manish Zope > Assignee: Yuki Morishita > Fix For: 1.0.7 > > Original Estimate: 48h > Remaining Estimate: 48h > > One of my colleague had reported the bug regarding the degraded performance > of the sstable generator and sstable loader. > ISSUE :- https://issues.apache.org/jira/browse/CASSANDRA-3589 > As stated in above issue generator performance is rectified but performance > of the sstableloader is still an issue. > 3589 is marked as duplicate of 3618.Both issues shows resolved status.But the > problem with sstableloader still exists. > So opening other issue so that sstbleloader problem should not go unnoticed. > FYI : We have tested the generator part with the patch given in 3589.Its > Working fine. > Please let us know if you guys require further inputs from our side. -- 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