[JIRA] (JENKINS-52150) High CPU sys time consumption after upgrade to 2.107.3

[carsten.pfeif...@gebit.de (JIRA)]

Title: Message Title

Carsten Pfeiffer commented on JENKINS-52150   Re: High CPU sys time consumption after upgrade to 2.107.3 We're also suffering from this, since we updated one jenkins from 2.89.4 to 2.121.2. It looks like the I/O pattern for writing a single fingerprint could be improved quite a bit, but this is probably not the only cause for the performance degradation. [pid 8789] stat("/var/jenkins_home/fingerprints/bf/e4", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 [pid 8789] access("/var/jenkins_home/fingerprints/bf/e4", F_OK) = 0 [pid 8789] stat("/var/jenkins_home/fingerprints/bf/e4", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 [pid 8789] lstat("/var/jenkins_home/fingerprints/bf/e4", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 [pid 8789] mkdir("/var/jenkins_home/fingerprints/bf/e4", 0777) = -1 EEXIST (File exists) [pid 8789] lstat("/var/jenkins_home/fingerprints/bf/e4", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 [pid 8789] stat("/var/jenkins_home/fingerprints/bf/e4/atomic8576544207056275611tmp", 0x7fe62a3e3f00) = -1 ENOENT (No such file or directory) [pid 8789] open("/var/jenkins_home/fingerprints/bf/e4/atomic8576544207056275611tmp", O_RDWR|O_CREAT|O_EXCL, 0666) = 5 [pid 8789] open("/var/jenkins_home/fingerprints/bf/e4/atomic8576544207056275611tmp", O_WRONLY) = 5 [pid 8789] rename("/var/jenkins_home/fingerprints/bf/e4/atomic8576544207056275611tmp", "/var/jenkins_home/fingerprints/bf/e4/c7f5648f164d878a47abeebea260.xml") = 0 [pid 8789] lstat("/var/jenkins_home/fingerprints/bf/e4/atomic8576544207056275611tmp", 0x7fe62a3e4020) = -1 ENOENT (No such file or directory) The problem really only shows up when you have lots of fingerprints. In our case, this is around 330k, stored in 6,5k directories in the fingerprints directory. Add Comment   This message was sent by Atlassian JIRA (v7.10.1#710002-sha1:6efc396) -- 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. For more options, visit https://groups.google.com/d/optout.