Details
-
Bug
-
Resolution: Not a Bug
-
Major
-
None
-
6.5.0
-
Untriaged
-
Yes
Description
We are observing a decreased in java client dcp throughput for uncompressed data.
Test
DCP Throughput, 1 node, 250M x 1KB, Java client, compression disabled
Results
6.5.0-3126: http://perf.jenkins.couchbase.com/job/ares-dcp/371/ – 62148
6.5.0-3127: http://perf.jenkins.couchbase.com/job/ares-dcp/368/ – 48232
Report
Logs for 6.5.0-3126
https://s3-us-west-2.amazonaws.com/perf-artifacts/jenkins-ares-dcp-371/172.23.133.11.zip
https://s3-us-west-2.amazonaws.com/perf-artifacts/jenkins-ares-dcp-371/172.23.133.12.zip
https://s3-us-west-2.amazonaws.com/perf-artifacts/jenkins-ares-dcp-371/172.23.133.13.zip
https://s3-us-west-2.amazonaws.com/perf-artifacts/jenkins-ares-dcp-371/172.23.133.14.zip
Logs for 6.5.0-3127**
https://s3-us-west-2.amazonaws.com/perf-artifacts/jenkins-ares-dcp-368/172.23.133.11.zip
https://s3-us-west-2.amazonaws.com/perf-artifacts/jenkins-ares-dcp-368/172.23.133.12.zip
https://s3-us-west-2.amazonaws.com/perf-artifacts/jenkins-ares-dcp-368/172.23.133.13.zip
https://s3-us-west-2.amazonaws.com/perf-artifacts/jenkins-ares-dcp-368/172.23.133.14.zip
Changelog for 6.5.0-3126 to 6.5.0-127
http://172.23.123.43:8000/getchangelog?product=couchbase-server&fromb=6.5.0-3126&tob=6.5.0-3127
Comment
Looks like a fix for cursor dropping may be the issue:
https://github.com/couchbase/kv_engine/commit/4b3d2019007246f1e59b3e02975fc356001e106d
The performance history of this test has a lot of volatility and the throughput for compressed version of the test increased.