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Nextcloud version (eg, 12.0.2): 13.0.5
Operating system and version (eg, Ubuntu 17.04): Debian 9.5
Apache or nginx version (eg, Apache 2.4.25): Apache 2.4.25
PHP version (eg, 7.1): 7.0.30
The issue you are facing: Cronjob for cron.php creats high mysql load and doesn’t finish after upgrade
Is this the first time you’ve seen this error? (Y/N): Y
Steps to replicate it:
updated from 13.0.4 to 13.0.5 (without problem, does not happen on 2 other machines)
The output of your Nextcloud log in Admin > Logging:
Nothing to see here
The output of your Apache/nginx/system log in `/var/log/____`:
Nothing to see here
Mysqld consumes 100% CPU after starting cron.php and will keep on running and starts up new processes to like cron says an in creases server load +100% for each started cron.php-process. strace summary shows for one running process (60 minutes):
% time seconds usecs/call calls errors syscall
------ ----------- ----------- --------- --------- ----------------
98.40 16.977309 88423 192 poll
1.58 0.272000 272000 1 restart_syscall
0.02 0.004101 3 1351 fcntl
0.00 0.000231 1 356 futex
0.00 0.000140 1 193 accept
0.00 0.000057 0 193 193 setsockopt
------ ----------- ----------- --------- --------- ----------------
100.00 17.253838 2286 193 total
The constantly repeated output for the pid looks like this:
futex(0x556b980fb364, FUTEX_WAKE_OP_PRIVATE, 1, 1, 0x556b980fb360, FUTEX_OP_SET<<28|0<<12|FUTEX_OP_CMP_GT<<24|0x1) = 1
futex(0x556b980f8e40, FUTEX_WAKE_PRIVATE, 1) = 1
poll([{fd=20, events=POLLIN}, {fd=21, events=POLLIN}], 2, -1) = 1 ([{fd=21, revents=POLLIN}])
fcntl(21, F_GETFL) = 0x2 (flags O_RDWR)
fcntl(21, F_SETFL, O_RDWR|O_NONBLOCK) = 0
accept(21, {sa_family=AF_UNIX}, [128->2]) = 101
fcntl(101, F_GETFD) = 0
fcntl(101, F_SETFD, FD_CLOEXEC) = 0
fcntl(21, F_SETFL, O_RDWR) = 0
fcntl(101, F_SETFD, FD_CLOEXEC) = 0
fcntl(101, F_SETFL, O_RDONLY|O_NONBLOCK) = 0
setsockopt(101, SOL_IP, IP_TOS, [8], 4) = -1 EOPNOTSUPP (Operation not supported)
Anyone any suggestions how to make cron.php run properly again or how to debug more?
Best regards