Hi Limits: Where all working fine:
core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) 257970 max locked memory (kbytes, -l) 64 max memory size (kbytes, -m) unlimited open files (-n) 65536 pipe size (512 bytes, -p) 8 POSIX message queues (bytes, -q) 819200 real-time priority (-r) 0 stack size (kbytes, -s) 8192 cpu time (seconds, -t) unlimited max user processes (-u) 257970 virtual memory (kbytes, -v) unlimited file locks (-x) unlimited with new debian9: core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) 257577 max locked memory (kbytes, -l) 64 max memory size (kbytes, -m) unlimited open files (-n) 1024 pipe size (512 bytes, -p) 8 POSIX message queues (bytes, -q) 819200 real-time priority (-r) 0 stack size (kbytes, -s) 8192 cpu time (seconds, -t) unlimited max user processes (-u) 257577 virtual memory (kbytes, -v) unlimited file locks (-x) unlimited maby systemd "something has changed" and add: echo "kernel.pid_max = 50000" >> /etc/sysctl.conf sysctl -p systemctl edit dovecot.service [Service] TasksMax=40000 systemctl daemon-reload systemctl restart dovecot.service cat /sys/fs/cgroup/pids/system.slice/dovecot.service/pids.max Any idea ? On 16.09.2020 09:45, Maciej Milaszewski wrote: > Hi > I update os from debian8 to debian9 > > # 2.2.36.4 (baf9232c1): /etc/dovecot/dovecot.conf > # Pigeonhole version 0.4.24.2 (aaba65b7) > # OS: Linux 4.9.0-13-amd64 x86_64 Debian 9.13 > > All works fine but sometimes I get: > > Sep 16 09:17:00 dovecot4 dovecot: master: Error: service(pop3): fork() > failed: Resource temporarily unavailable (ulimit -u 257577 reached?) > Sep 16 09:17:00 dovecot4 dovecot: master: Error: service(imap): fork() > failed: Resource temporarily unavailable (ulimit -u 257577 reached?) > Sep 16 09:17:00 dovecot4 dovecot: master: Error: service(doveadm): > fork() failed: Resource temporarily unavailable (ulimit -u 257577 reached?) > Sep 16 09:17:02 dovecot4 dovecot: master: Error: service(doveadm): > fork() failed: Resource temporarily unavailable (ulimit -u 257577 reached?) > Sep 16 09:17:02 dovecot4 dovecot: master: Error: service(pop3): fork() > failed: Resource temporarily unavailable (ulimit -u 257577 reached?) > Sep 16 09:17:02 dovecot4 dovecot: master: Error: service(imap): fork() > failed: Resource temporarily unavailable (ulimit -u 257577 reached?) > Sep 16 09:17:04 dovecot4 dovecot: master: Error: service(imap): fork() > failed: Resource temporarily unavailable (ulimit -u 257577 reached?) > > Other dovecot is debian8 and problem not exists - any idea ?
