I do know there is/was a bug the systemd isnt picking up the filedescriptors with systemd, you might have hit it. Im suspecting your start script is a sysv script invoked by systemd. Try to set the limits within the start script (sysv) so the correct users ( running squid ) gets the filedescriptors. I run Debian 9, with a recompiled squid from debian sid and that work fine for me atm. If you use the 4.1 from sid, add the following changes also.
/etc/logrotate.d/squid postrotate if [ -d /run/systemd/system ] && command systemctl >/dev/null 2>&1 && systemctl is-active --quiet squid.service; then systemctl restart squid.service elif [ -f /var/run/squid.pid ]; then test ! -e /var/run/squid.pid || test ! -x /usr/sbin/squid || /usr/sbin/squid -k rotate fi endscript Try the following and the below the command created the file /etc/systemd/system/squid.service.d/override.conf Add there the following. systemctl edit squid [Unit] After=network.target network-online.target nss-lookup.target Wants=network-online.target [Service] LimitNOFILE=8192:65535 User=proxy Group=proxy Greetz, Louis Van: squid-users [mailto:squid-users-boun...@lists.squid-cache.org] Namens Alex K Verzonden: dinsdag 7 augustus 2018 9:46 Aan: squid-users@lists.squid-cache.org Onderwerp: [squid-users] Squid File descriptors warning Hi all, I observed the following warning at squid cache logs: WARNING! Your cache is running out of filedescriptors Googling around I tried to increase the default file descriptors of the system (I am runnign Debian9 x64 bit), by setting at /etc/sysctl.conf: fs.file-max=802762 Restarted system. Still was receiving the warnings. When checking further I observed that I have the following default limits: ulimit -a core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) 15338 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) 15338 virtual memory (kbytes, -v) unlimited file locks (-x) unlimited Where the "open files" seems to be the related one. I set also the following at squid conf: max_filedescriptors 65535 I am running a compiled version 3.5.23. I am not sure I have done the correct steps or if I need to tweak the ulimits also. Any experience from your side? Thanx, alex
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