[JIRA] (JENKINS-59404) High CPU usage in MapperBase.importFromFile in Benchmark Plugin

[artalus-m...@yandex.ru (JIRA)]

Title: Message Title

Artalus S. created an issue   Jenkins / JENKINS-59404 High CPU usage in MapperBase.importFromFile in Benchmark Plugin Issue Type: Bug Assignee: Daniel Mercier Attachments: cpu.png, Screenshot_2019-09-17_11-47-53.png Components: benchmark-plugin Created: 2019-09-17 08:53 Environment: Jenkins ver. 2.184 Benchmark 1.0.9 Priority: Major Reporter: Artalus S. Several days ago we've noticed that our Jenkins master had almost all its 12 core under 100% load. Apparently it's been that way for several days straight. Using Monitoring plugin we've figured out there was about 10 threads with tremendous amount of time spent in `java.util.TreeMap.put`. Killing those threads one by one didn't break anything, so we assumed it to be some strange jenkins quirk and went on. AFAIK stack traces weren't informative. Today I noticed there are 3 threads each eating 100% of core again. This time stack traces are more informative (see attachments). I cannot confirm that those two issues with CPU load are directly correlated, but the current one seems legit enough. Add Comment   This message was sent by Atlassian Jira (v7.13.6#713006-sha1:cc4451f) -- You received this message because you are subscribed to the Google Groups "Jenkins Issues" group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-issues+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-issues/JIRA.201962.1568710397000.4866.1568710440440%40Atlassian.JIRA.