Alan Boudreault created CASSANDRA-10609:
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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}
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