https://bz.apache.org/bugzilla/show_bug.cgi?id=65626
--- Comment #13 from Shun F <uni....@gmail.com> --- Updated httpd to 2.4.53 from 2.4.51. After several time reloads, child processes disappeared one by one with following: [Mon Apr 11 14:19:49.422912 2022] [mpm_event:debug] [pid 20759:tid 140355756119808] event.c(576): wake up listener All child processes disappeared and only parent process survive, following is logged every second: [Mon Apr 11 14:29:25.195671 2022] [mpm_event:info] [pid 28925:tid 140356948518720] AH00486: server seems busy, (you may need to increase StartServers, ThreadsPerChild or Min/MaxSpareThreads), spawning 0 children, there are around 64 idle threads, 14 active children, and 14 children that are shutting down [Mon Apr 11 14:29:26.196818 2022] [mpm_event:info] [pid 28925:tid 140356948518720] AH00486: server seems busy, (you may need to increase StartServers, ThreadsPerChild or Min/MaxSpareThreads), spawning 0 children, there are around 64 idle threads, 14 active children, and 14 children that are shutting down [Mon Apr 11 14:29:27.197926 2022] [mpm_event:info] [pid 28925:tid 140356948518720] AH00486: server seems busy, (you may need to increase StartServers, ThreadsPerChild or Min/MaxSpareThreads), spawning 0 children, there are around 64 idle threads, 14 active children, and 14 children that are shutting down Reloading or stopping/starting httpd recovers from this situation. This can be reproduce not only at production environment but also at the test environment with no web accesses to httpd. Can you please investigate and fix this. ///////////////////////////commands(RHEL) systemctl stop httpd systemctl start httpd /usr/bin/systemctl reload httpd.service /usr/bin/systemctl reload httpd.service /usr/bin/systemctl reload httpd.service /usr/bin/systemctl reload httpd.service /usr/bin/systemctl reload httpd.service (wait about 30 minutes) ///////////////////////////httpd-mpm.conf <IfModule mpm_event_module> ServerLimit 10 StartServers 4 MinSpareThreads 75 MaxSpareThreads 250 ThreadsPerChild 64 MaxRequestWorkers 640 MaxConnectionsPerChild 300 </IfModule> -- You are receiving this mail because: You are the assignee for the bug. --------------------------------------------------------------------- To unsubscribe, e-mail: bugs-unsubscr...@httpd.apache.org For additional commands, e-mail: bugs-h...@httpd.apache.org