Alan Boudreault created CASSANDRA-10609: -------------------------------------------
Summary: MV performance regression Key: CASSANDRA-10609 URL: https://issues.apache.org/jira/browse/CASSANDRA-10609 Project: Cassandra Issue Type: Bug Environment: EC2 Reporter: Alan Boudreault Assignee: Tyler Hobbs Priority: Critical Fix For: 3.0.0 I've noticed an important MV performance regression that has been introduced in 3.0.0-rc1. The issue has been introduced by #9664. * I'm using mvbench to test with RF=3 * I confirm it's not a driver issue. {code} EC2 RF=3 (i2.2xlarge, also tried on i2.4xlarge) mvn exec:java -Dexec.args="--num-users 100000 --num-songs 1000000 --num-artists 10000 -n 500000 --endpoint node1" 3.0.0-beta2 (alpha2 java driver) ----------- total count = 461601 mean rate = 1923.21 calls/second 1-minute rate = 1937.82 calls/second 5-minute rate = 1424.09 calls/second 15-minute rate = 1058.28 calls/second min = 1.90 milliseconds max = 3707.76 milliseconds mean = 516.42 milliseconds stddev = 457.41 milliseconds median = 390.07 milliseconds 75% <= 775.95 milliseconds 95% <= 1417.67 milliseconds 98% <= 1728.05 milliseconds 99% <= 1954.55 milliseconds 99.9% <= 2566.91 milliseconds 3.0.0-rc1 (alpha3 java driver) --------- total count = 310373 mean rate = 272.25 calls/second 1-minute rate = 0.00 calls/second 5-minute rate = 45.47 calls/second 15-minute rate = 295.94 calls/second min = 1.05 milliseconds max = 10468.98 milliseconds mean = 492.99 milliseconds stddev = 510.42 milliseconds median = 281.02 milliseconds 75% <= 696.25 milliseconds 95% <= 1434.45 milliseconds 98% <= 1820.33 milliseconds 99% <= 2080.37 milliseconds 99.9% <= 4362.08 milliseconds {code} -- This message was sent by Atlassian JIRA (v6.3.4#6332)