[ https://issues.apache.org/jira/browse/FLINK-24553?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Piotr Nowojski reopened FLINK-24553: ------------------------------------ > Change buffer debloating default configuration values > ----------------------------------------------------- > > Key: FLINK-24553 > URL: https://issues.apache.org/jira/browse/FLINK-24553 > Project: Flink > Issue Type: Improvement > Components: Runtime / Checkpointing > Affects Versions: 1.14.0 > Reporter: Anton Kalashnikov > Assignee: Anton Kalashnikov > Priority: Major > Labels: pull-request-available > Fix For: 1.15.0 > > > After the investigation for buffer debloating effectiveness, there are some > conclusion: > * taskmanager.memory.min-segment-size can be decreased from 1024 to at least > 256 because in some cases even 1024 is a too big value and at the same time > the low min value is not a problem. > * taskmanager.network.memory.buffer-debloat.samples can be decreased from 20 > to 10 or taskmanager.network.memory.buffer-debloat.period can be decreased > from 500ms to 100ms or 200ms. According to the investigation, the current > speed of reaction is too slow so it is better to increase it by changing one > of these parameters. > * taskmanager.network.memory.buffer-debloat.threshold-percentages can be > decreased from 50 to 10 because there are no problems were found when the > announcement of buffer size happened more frequently but it actually can > positively influent the checkpoint time. > it is better to change the default value for min-segment-size only after the > task https://issues.apache.org/jira/browse/FLINK-24190 will be done. -- This message was sent by Atlassian Jira (v8.3.4#803005)