On Thu, Jun 3, 2021 at 6:23 AM Jay Ce <jceh12...@gmail.com> wrote: > > Hi, > > I noticed that sometimes when performing a graceful restart of httpd, the CPU > of the httpd process spikes and does not come down. This happens more > frequently if the web server is under load but can happen even when not > serving traffic. Has anyone else encountered this problem? And what can I do > to resolve this? > > I did not notice any error messages in the error log and only see the > following: > Sat May 29 03:33:01.424748 2021] [mpm_worker:notice] [pid 2773:tid > 140527163445824] AH00297: SIGUSR1 received. Doing graceful restart > AH00558: httpd: Could not reliably determine the server's fully qualified > domain name, using 127.0.0.1. Set the 'ServerName' directive globally to > suppress this message > [Sat May 29 03:33:01.485368 2021] [http2:warn] [pid 2773:tid 140527163445824] > AH02951: mod_ssl does not seem to be enabled > [Sat May 29 03:33:01.485953 2021] [mpm_worker:notice] [pid 2773:tid > 140527163445824] AH00292: Apache/2.4.46 () configured -- resuming normal > operations > [Sat May 29 03:33:01.485964 2021] [core:notice] [pid 2773:tid > 140527163445824] AH00094: Command line: '/usr/sbin/httpd -D FOREGROUND' > [Sat May 29 03:33:01.486045 2021] [mpm_worker:warn] [pid 2773:tid > 140527163445824] AH00291: long lost child came home! (pid 25489) > > > From performing a top > top - 17:44:22 up 5 days, 16:04, 1 user, load average: 7.00, 7.13, 8.27 > Threads: 384 total, 8 running, 316 sleeping, 0 stopped, 1 zombie > %Cpu(s): 99.8 us, 0.2 sy, 0.0 ni, 0.0 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 > st > KiB Mem : 7807268 total, 4124256 free, 543316 used, 3139696 buff/cache > KiB Swap: 1310716 total, 1310716 free, 0 used. 6949164 avail Mem > > PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND > 23677 apache 20 0 2293264 7524 4148 R 58.6 0.1 4582:47 httpd > 23664 apache 20 0 2293264 7524 4148 R 58.2 0.1 4581:57 httpd > 23636 apache 20 0 2293264 7524 4148 R 57.6 0.1 4582:16 httpd > 23660 apache 20 0 2293264 7524 4148 R 57.2 0.1 4580:51 httpd > 23698 apache 20 0 2293264 7524 4148 R 56.6 0.1 4582:17 httpd > 23648 apache 20 0 2293264 7524 4148 R 55.9 0.1 4580:52 httpd > 23668 apache 20 0 2293264 7524 4148 R 53.9 0.1 4581:23 httpd > 1 root 20 0 128600 8592 5524 S 0.0 0.1 6:02.91 systemd >
Can you get backtraces from a few such process with "pstack" or gdb? https://httpd.apache.org/dev/debugging.html#backtrace --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@httpd.apache.org For additional commands, e-mail: users-h...@httpd.apache.org
