search for: pid_max

I have two systems both running CentOS 7.4 one shows pid_max as 32768 the other shows pid_max as 49152 Why might that be ? I would have thought they would be the same. I have not changed them. Thanks, Jerry

On Wed, 28 Feb 2018 15:15:59 -0500 Jerry Geis <jerry.geis at gmail.com> wrote: > I have two systems both running CentOS 7.4 > > one shows pid_max as 32768 > the other shows pid_max as 49152 > > Why might that be ? I would have thought they would be the same. I > have not changed them. I think that max is calculated as a function of number of CPUs. Maybe those two installations differ in that regard? /Peter

----- Original Message ----- From: Tony Morehen [mailto:tmorehen at ajmconsulting.ca] To: dovecot at dovecot.org Sent: Sat, 12 Sep 2015 17:57:27 -0400 Subject: Re: concerning dovecot settings for high volume server You may be running up against Linux system/user limits. Run $ cat /proc/sys/kernel/pid_max and $ ulimit -a That should give some insight into your problem. On 12/09/2015 2:53 PM, Rajesh M wrote: > hi > > centos 6 64 bit > > hex core processor with hyperthreading ie display shows 12 cores > 16 gb ram > 600 gb 15000 rpm drive > > we are having around 4000 users...

...????????? (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...

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:

...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 &g...

...le: colour dummy device 80x25 [ 0.000000] console [ttyS0] enabled [ 0.000000] Fast TSC calibration using PIT [ 0.000000] Detected 2526.022 MHz processor. [ 0.000472] Calibrating delay loop (skipped), value calculated using timer frequency.. 5052.04 BogoMIPS (lpj=25260220) [ 0.001006] pid_max: default: 32768 minimum: 301 [ 0.001935] Security Framework initialized [ 0.004110] AppArmor: AppArmor initialized [ 0.004301] Yama: becoming mindful. [ 0.008970] Dentry cache hash table entries: 65536 (order: 7, 524288 bytes) [ 0.010000] Inode-cache hash table entries: 32768 (order:...

...2624 16 [ 0.000000] Xen reported: 2494.062 MHz processor. [ 0.000000] Console: colour dummy device 80x25 [ 0.000000] console [tty0] enabled [ 0.000000] console [xvc-1] enabled [ 0.080007] Calibrating delay using timer specific routine.. 5055.20 BogoMIPS (lpj=10110411) [ 0.080015] pid_max: default: 32768 minimum: 301 [ 0.080080] Security Framework initialized [ 0.080098] AppArmor: AppArmor initialized [ 0.080121] Mount-cache hash table entries: 256 [ 0.080232] Initializing cgroup subsys cpuacct [ 0.080239] Initializing cgroup subsys memory [ 0.080247] Initializing...

...000] [<c16ba609>] xen_start_kernel+0x5c9/0x5d1 [ 0.000000] ---[ end trace 4eaa2a86a8e2da22 ]--- [ 0.000000] Detected 2899.988 MHz processor. [1266874889.140126] Calibrating delay loop (skipped), value calculated using timer frequency.. 5799.97 BogoMIPS (lpj=2899988) [1266874889.140126] pid_max: default: 32768 minimum: 301 [1266874889.140126] Security Framework initialized [1266874889.140126] SELinux: Initializing. [1266874889.140126] SELinux: Starting in permissive mode [1266874889.140126] Mount-cache hash table entries: 512 [1266874889.140126] Initializing cgroup subsys cpuacct [12668...

...led allocated 9437184 bytes of page_cgroup please try 'cgroup_disable=memory' option if you don't want memory cgroups installing Xen timer for CPU 0 Detected 2400.030 MHz processor. Calibrating delay loop (skipped), value calculated using timer frequency.. 4800.06 BogoMIPS (lpj=2400030) pid_max: default: 32768 minimum: 301 Security Framework initialized SELinux: Initializing. Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes) Inode-cache hash table entries: 65536 (order: 7, 524288 bytes) Mount-cache hash table entries: 256 Initializing cgroup subsys cpuacct Initializing cg...

...VMI)) + { + .ctl_name = KERN_HZ_TIMER, + .procname = "hz_timer", + .data = &sysctl_hz_timer, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec, + }, +#endif { .ctl_name = KERN_PIDMAX, .procname = "pid_max", Index: linux-2.6.16-rc6/kernel/timer.c =================================================================== --- linux-2.6.16-rc6.orig/kernel/timer.c 2006-03-12 19:49:58.000000000 -0800 +++ linux-2.6.16-rc6/kernel/timer.c 2006-03-12 19:57:53.000000000 -0800 @@ -823,6 +823,17 @@ static void upd...

...VMI)) + { + .ctl_name = KERN_HZ_TIMER, + .procname = "hz_timer", + .data = &sysctl_hz_timer, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = &proc_dointvec, + }, +#endif { .ctl_name = KERN_PIDMAX, .procname = "pid_max", Index: linux-2.6.16-rc6/kernel/timer.c =================================================================== --- linux-2.6.16-rc6.orig/kernel/timer.c 2006-03-12 19:49:58.000000000 -0800 +++ linux-2.6.16-rc6/kernel/timer.c 2006-03-12 19:57:53.000000000 -0800 @@ -823,6 +823,17 @@ static void upd...

hi centos 6 64 bit hex core processor with hyperthreading ie display shows 12 cores 16 gb ram 600 gb 15000 rpm drive we are having around 4000 users on a server i wish to allow 1500 pop3 and 1500 imap connections simultaneously. need help regarding the settings to handle the above imap-login, pop3-login imap pop3 service settings i recently i got an error imap-login: Error: read(imap)

...memory cgroups [ 0.000000] installing Xen timer for CPU 0 [ 0.000000] tsc: Fast TSC calibration using PIT [ 0.000000] tsc: Detected 2100.066 MHz processor [ 0.002000] Calibrating delay loop (skipped), value calculated using timer frequency.. 4200.06 BogoMIPS (lpj=2100030) [ 0.002000] pid_max: default: 32768 minimum: 301 [ 0.002000] Security Framework initialized [ 0.002000] SELinux: Initializing. [ 0.002000] Yama: becoming mindful. [ 0.002000] Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes) [ 0.002000] Inode-cache hash table entries: 65536 (order: 7, 5...

...e.conf: [Service] LimitNOFILE=infinity TasksMax=infinity ~# egrep "processes|files" /proc/`pidof dovecot`/limits Max processes 514051 514051 Max open files 1048576 1048576 ~# cat /proc/sys/net/core/somaxconn 65536 ~# cat /proc/sys/kernel/pid_max 278528 Dovecot is configured with NFS backed storage, and locally stored passwdfile userdb/passdb are used for authentication. Backends are (now) behind directors. The directors/proxies are having no issues dealing with the traffic whatsoever. At the time of failure, the process list looks lik...

Hi, After upgrading Dovecot from version 2.2.27 to 2.3.9.2, we are sporadically seeing lots of these errors in the error log on many of our servers: imap-login: Error: master(imap): net_connect_unix(imap) failed: Resource temporarily unavailable - http://wiki2.dovecot.org/SocketUnavailable The issue is causing significant delays and/or timeouts on login. From what I can tell, this

...00] console [tty0] enabled [ 0.000000] console [hvc0] enabled [ 0.000000] installing Xen timer for CPU 0 [ 0.000000] tsc: Detected 3200.090 MHz processor [ 0.004000] Calibrating delay loop (skipped), value calculated using timer frequency.. 6400.18 BogoMIPS (lpj=12800360) [ 0.004000] pid_max: default: 32768 minimum: 301 [ 0.004000] Security Framework initialized [ 0.004000] AppArmor: AppArmor disabled by boot time parameter [ 0.004000] Yama: disabled by default; enable with sysctl kernel.yama.* [ 0.004000] Dentry cache hash table entries: 16384 (order: 5, 131072 bytes) [...

Maybe that is https://reviews.llvm.org/D30171. On Mon, Feb 20, 2017 at 11:16 PM, Dmitry Golovin <dima at golovin.in> wrote: > Hi, > > I can't build the Linux kernel anymore. With the latest kernel source and > latest LLVM and LLD (with D30163) I can only get this error message when > linking vmlinux: > > ld.lld: error: unable to move location counter backward >

...d [ 0.000000] tsc: Unable to calibrate against PIT [ 0.000000] tsc: No reference (HPET/PMTIMER) available [ 0.000000] tsc: Detected 2394.058 MHz processor [ 0.002000] Calibrating delay loop (skipped), value calculated using timer frequency.. 4788.11 BogoMIPS (lpj=2394058) [ 0.002000] pid_max: default: 32768 minimum: 301 [ 0.002000] Security Framework initialized [ 0.002000] SELinux: Initializing. [ 0.002000] Yama: becoming mindful. [ 0.002714] Dentry cache hash table entries: 524288 (order: 10, 4194304 bytes) [ 0.004757] Inode-cache hash table entries: 262144 (order: 9,...

...le=memory'' option if you don''t want memory cgroups [ 0.000000] installing Xen timer for CPU 0 [ 0.000000] Detected 2500.064 MHz processor. [ 0.010000] Calibrating delay loop (skipped), value calculated using timer frequency.. 5000.12 BogoMIPS (lpj=25000640) [ 0.010000] pid_max: default: 32768 minimum: 301 [ 0.010000] Security Framework initialized [ 0.010000] AppArmor: AppArmor initialized [ 0.010000] Yama: becoming mindful. [ 0.010000] Dentry cache hash table entries: 65536 (order: 7, 524288 bytes) [ 0.010000] Inode-cache hash table entries: 32768 (order:...