Mailing List CGatePro@mail.stalker.com Message #106855
From: Marcel Hochuli mhochuli@a-f.ch <CGatePro@mail.stalker.com>
Subject: Re: too many files open
Date: Mon, 11 Jun 2018 15:49:17 +0000
To: CommuniGate Pro Discussions <CGatePro@mail.stalker.com>
X-Mailer: Apple Mail (2.3273)
Hello Dmitry

Thank you for the clarification. I will write it down for similar cases.

As we made a step forward, migrating from old Xserve to Linux VM, our problem is solved anyway (and CG is running smooth and fast now).

The linux system has actually open files limit=4046 and it runs well with some thousand concurrent IMAP- and HTTPU-sessions


Marcel

_______________________________________



> Am 11.06.2018 um 11:18 schrieb Technical Support support@communigate.com <CGatePro@mail.stalker.com>:
>
> Hello,
>
> On 2018-06-08 10:30 , Marcel Hochuli mhochuli@a-f.ch wrote:
>> Hi
>> I have this same error with CGP 6.2.5
>> I updated CGP 6.1.6 to 6.2.5 yesterday. It then had open files limit=256 !!!
>> Today I got back to 6.1.6 which has open files limit=119950 (without any Startup options).
>> I also tried with "ulimit -n 20000", but this doesn't work as these Log-Lines tell me:
>> CGP-Log:
>> 17:27:04.302 0 SYSTEM server 6.2.5 started under Apple MacOS X Darwin(x86-64)
>> 17:27:04.302 2 SYSTEM start options: "--Base" "/var/CommuniGate" "ulimit" "-n" "20000"
>> 17:27:04.302 2 SYSTEM open files limit=256
>> Syslog:
>> Jun  7 17:27:04 mailserver CommuniGatePro[84113]: Starting CommuniGate Pro
>> Jun  7 17:27:04 mailserver CommuniGatePro[84113]: CommuniGate Pro server 6.2.5 started
>> Jun  7 17:27:06 mailserver CommuniGatePro[84118]: unknown startup parameter: ulimit
>> Jun  7 17:27:06 mailserver CommuniGatePro[84118]: unknown startup parameter: -n
>> Jun  7 17:27:06 mailserver CommuniGatePro[84113]: unknown startup parameter: ulimit
>> Jun  7 17:27:06 mailserver CommuniGatePro[84113]: unknown startup parameter: -n
>> Jun  7 17:27:06 mailserver CommuniGatePro[84118]: unknown startup parameter: 20000
>> Jun  7 17:27:06 mailserver CommuniGatePro[84113]: unknown startup parameter: 20000
>
> Looks like you've put "ulimit ..." instruction into teh SUPPLPARAMS line in Startup.sh. You should not. The file should contain something like
>
> SUPPLPARAMS="any cgpro command-line parameters"
> ulimit -n unlimited
>
> "ulimit" is OS/shell command that changes the limits for the shell session later used to start he CGServer process, it's not a parameter fro the CGServer process itself.
>
>> It runs on an Xserve Quad-Core Xeon with Mac OS X 10.6.8
>> How can I solve this problem?
>> Marcel
>> _______________________________________
>>> Am 29.01.2015 um 22:21 schrieb Ralf Zenklusen <ralf.zenklusen@barinformatik.ch>:
>>>
>>> Try with "ulimit -n 20000"
>>>
>>> Regards
>>> Ralf
>>>
>>>
>>> -----Urspr√ľngliche Nachricht-----
>>> Von: CommuniGate Pro Discussions [mailto:CGatePro@mail.stalker.com] Im Auftrag von Karl Zander
>>> Gesendet: Donnerstag, 29. Januar 2015 20:59
>>> An: CommuniGate Pro Discussions
>>> Betreff: too many files open
>>>
>>> We see "too many files open" errors in our logs.  And the server starts flaking out.   We end up restarting CGP.
>>>
>>> 10:41:07.3024 3 SMTP [172.16.xx.xx]:25 <- [118.169.xx.xx]:63475 rejected, too many files open (fd=8179)
>>> 10:41:10.1369 3 SMTP [172.16.xx.xx]:25 <- [71.100.147.55]:3926 rejected, too many files open (fd=8179)
>>> 10:41:10.2380 3 SMTP [172.16.xx.xx]:25 <- [71.100.147.55]:3939 rejected, too many files open (fd=8179)
>>> 10:41:10.3395 3 SMTP [172.16.xx.xx]:25 <- [71.100.147.55]:3949 rejected, too many files open (fd=8179)
>>> 10:41:10.4499 3 SMTP [172.16.xx.xx]:25 <- [71.100.147.55]:3965 rejected, too many files open (fd=8179)
>>> 10:41:10.5608 3 SMTP [172.16.xx.xx]:25 <- [71.100.147.55]:3974 rejected, too many files open (fd=8179)
>>> 10:41:10.6717 3 SMTP [172.16.xx.xx]:25 <- [71.100.147.55]:3982 rejected, too many files open (fd=8179)
>>> 10:41:10.7725 3 SMTP [172.16.xx.xx]:25 <- [71.100.147.55]:3991 rejected, too many files open (fd=8179)
>>> 10:41:11.2854 3 SMTP [172.16.xx.xx]:25 <- [71.100.147.55]:3999 rejected, too many files open (fd=8179)
>>> 10:41:14.3602 3 SMTP [172.16.xx.xx]:25 <- [112.171.241.13]:12703 rejected, too many files open (fd=8179)
>>>
>>> Looks like a lot of connections from the same address.
>>>
>>> Running CGP 6.0.11 on Gentoo Linux
>>>
>>> In the CGP startup script we have
>>>
>>>    ulimit -u 2048
>>>    ulimit -n 8192
>>>
>>> 10:42:19.4187 0 SYSTEM server 6.0.11 started under Linux(x86-64)
>>> 10:42:19.4187 2 SYSTEM start options: "--Base" "/var/CommuniGate" "--Daemon"
>>> 10:42:19.4187 2 SYSTEM open files limit=8192
>>> 10:42:19.4187 2 SYSTEM process core dump limit=0M
>>>
>>> How do we mitigate this?
>>>
>>> --Karl
>>>
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> --
> Best regards,
> Dmitry Akindinov.
> =======================================================================
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