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Russ Hatch commented on CASSANDRA-8692: --------------------------------------- Initial benchmarks on ec2 c3.8xlarge nodes are complete. I ran this matrix as suggested by [~enigmacurry]: {noformat} In memory load (fieldcount * fieldlength * recordcount * fluff < total memory size): readproportion: 1.0: uniform zipfian latest readproportion: 0.9, writeproportion: 0.10: uniform zipfian latest 2x memory load (fieldcount * fieldlength * recordcount * fluff <= (2 * total memory size)): readproportion: 1.0: uniform zipfian latest readproportion: 0.9, writeproportion: 0.10: uniform zipfian latest {noformat} As a control/baseline I used trunk as of late last week. The patch was from https://github.com/aweisberg/cassandra/tree/C-8692-2 (git sha 422f5e194). [in memory - read 100% - uniform dist|http://riptano.github.io/cassandra_performance/ycsb/graph.html?stats=8692_inmemory_uniform_read_100.json] [in memory - read 100% - zipfian dist|http://riptano.github.io/cassandra_performance/ycsb/graph.html?stats=8692_inmemory_zipfian_read_100.json] [in memory - read 100% - latest dist|http://riptano.github.io/cassandra_performance/ycsb/graph.html?stats=8692_inmemory_latest_read_100.json] [in memory - read 90% write 10% - uniform dist|http://riptano.github.io/cassandra_performance/ycsb/graph.html?stats=8692_inmemory_uniform_read_90_write_10.json] [in memory - read 90% write 10% - zipfian dist|http://riptano.github.io/cassandra_performance/ycsb/graph.html?stats=8692_inmemory_zipfian_read_90_write_10.json] [in memory - read 90% write 10% - latest dist|http://riptano.github.io/cassandra_performance/ycsb/graph.html?stats=8692_inmemory_latest_read_90_write_10.json] [2X memory - read 100% - uniform dist|http://riptano.github.io/cassandra_performance/ycsb/graph.html?stats=8692_2xmemory_uniform_read_100.json] [2X memory - read 100% - zipfian dist|http://riptano.github.io/cassandra_performance/ycsb/graph.html?stats=8692_2xmemory_zipfian_read_100.json] [2X memory - read 100% - latest dist|http://riptano.github.io/cassandra_performance/ycsb/graph.html?stats=8692_2xmemory_latest_read_100.json] [2X memory - read 90% write 10% - uniform dist|http://riptano.github.io/cassandra_performance/ycsb/graph.html?stats=8692_2xmemory_uniform_read_90_write_10.json] [2X memory - read 90% write 10% - zipfian dist|http://riptano.github.io/cassandra_performance/ycsb/graph.html?stats=8692_2xmemory_zipfian_read_90_write_10.json] [2x memory - read 90% write 10% - latest dist|http://riptano.github.io/cassandra_performance/ycsb/graph.html?stats=8692_2xmemory_latest_read_90_write_10.json] > Coalesce intra-cluster network messages > --------------------------------------- > > Key: CASSANDRA-8692 > URL: https://issues.apache.org/jira/browse/CASSANDRA-8692 > Project: Cassandra > Issue Type: Improvement > Components: Core > Reporter: Ariel Weisberg > Assignee: Ariel Weisberg > Fix For: 2.1.4 > > Attachments: batching-benchmark.png > > > While researching CASSANDRA-8457 we found that it is effective and can be > done without introducing additional latency at low concurrency/throughput. > The patch from that was used and found to be useful in a real life scenario > so I propose we implement this in 2.1 in addition to 3.0. > The change set is a single file and is small enough to be reviewable. -- This message was sent by Atlassian JIRA (v6.3.4#6332)