Displaying #cassandra-dev/2017-05-09.log:

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Tue May 9 06:56:11 2017  krut:!build cassandra-trunk
Tue May 9 06:56:11 2017  cassci:krut: syntax is: 'build <job> [now|<delay>[s|m|h]] [<parameterkey>=<value>]*'
Tue May 9 06:56:35 2017  krut::(
Tue May 9 06:57:41 2017  krut:!build trunk_dtest
Tue May 9 06:57:41 2017  cassci:krut: job trunk_dtest build scheduled with a quiet period of 15 seconds
Tue May 9 06:57:47 2017  krut:hah, i'm not retarded
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Tue May 9 16:25:07 2017  urandom:has anyone done any performance tests comparing 2.2.x to 3.x?
Tue May 9 16:25:48 2017  jeffj:(probably, but it's very workload dependent)
Tue May 9 16:25:49 2017  urandom:anecdotally, it seems to perform much better, but engineers hate to be told stuff like that
Tue May 9 16:26:27 2017  jeffj:thrift is definitely measurably worse.
Tue May 9 16:28:08 2017  jeffj:throughput seems a bit better with 3.0 vs 2.1, latency seems slightly higher (slower) for that same throughput.
Tue May 9 16:28:17 2017  jeffj:but always a lot of factors.
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Tue May 9 16:34:56 2017  iamaleksey:fwiw, some of early test results that showed some perf regression were traced to the switch to G1, which we reverted since
Tue May 9 16:38:25 2017  aweisberg:iamaleksey: Oracle is coming for your CMS.
Tue May 9 16:39:18 2017  jeffj:also debug logging is always on in 3.0 default config
Tue May 9 16:39:25 2017  jeffj:which obviously has cost
Tue May 9 16:40:10 2017  tjake_:did a lot of work in 3.X to fix the latency
Tue May 9 16:40:24 2017  tjake_:compared to 2.1
Tue May 9 16:40:35 2017  jeffj:x > 0 ?
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Tue May 9 17:17:33 2017  aweisberg:wat? https://builds.apache.org/view/A-D/view/Cassandra/job/Cassandra-trunk-dtest-offheap/58/testReport/repair_tests.incremental_repair_test/TestIncRepair/compaction_test/history/
Tue May 9 17:18:30 2017  aweisberg:It's marked as fixed and the # of failures is incremented, but there is no instance where the test result is failed
Tue May 9 17:19:42 2017  tjake_:jeffj #12269
Tue May 9 17:19:43 2017  CassBotJr:https://issues.apache.org/jira/browse/CASSANDRA-12269 (Resolved; Fixed; 3.10): "Faster write path"
Tue May 9 17:31:43 2017  jeffj:tjake_: \o/
Tue May 9 17:33:54 2017  jeffj:i know life goes on, but woulda been great if that cstar link was an attached screenshot.
Tue May 9 17:36:07 2017  tjake_:exlt: can you bounce cstar?
Tue May 9 17:36:59 2017  exlt:sec
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Tue May 9 17:38:37 2017  exlt:[Wed Mar 22 11:28:08 2017] Out of memory: Kill process 2821 (java) score 292 or sacrifice child
Tue May 9 17:39:00 2017  exlt:c* is replaying commitlogs
Tue May 9 17:42:09 2017  jeffj:oh, even better that it's still around!
Tue May 9 17:43:07 2017  exlt:that link appears to be working again - screen cap it :)
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Tue May 9 18:06:21 2017  tjake_:right so p99 of writes for 3.0 and trunk were ~90ms. in 2.2 and fix they were ~40ms
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Tue May 9 18:13:23 2017  tjake_:I don't what you were seeing
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