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A brief hardware and software
specification is as follows:
Server:
Intel Double Xeon with 1G memory and SCSI
harddrives - The following is the first section of "top" (while the GNUGK was
running but with no action):
15:37:58 up 2
days, 13:02, 2 users, load average: 0.00, 0.00, 0.00
48 processes: 47 sleeping, 1 running, 0 zombie, 0 stopped CPU0 states: 0.0% user 0.0% system 0.0% nice 0.0% iowait 100.0% idle CPU1 states: 0.0% user 0.1% system 0.0% nice 0.0% iowait 99.4% idle CPU2 states: 0.0% user 0.0% system 0.0% nice 0.0% iowait 100.0% idle CPU3 states: 0.0% user 0.0% system 0.0% nice 0.0% iowait 100.0% idle Mem: 1030184k av, 1011544k used, 18640k free, 0k shrd, 75964k buff 688628k actv, 14296k in_d, 133660k in_c Swap: 2040244k av, 5784k used, 2034460k free 279704k cached GNUGK:
version 2.2.3-2 compiled with large
fdset equal to 32768 and in "optnoshared" mode
Version:
Gatekeeper(GNU) Version(2.2.3) Ext(pthreads=1,radius=1,mysql=1,pgsql=0,large_fdset=32768) Build(Jan 4 2006, 17:16:31) Sys(Linux i686 2.4.20-31.9smp) GkStatus: Version(2.0) Ext() Toolkit: Version(1.0) Ext(basic) OS:
Linux RedHat 9.0 - the ulimit also is
increased to 32768
[root@MTGK02 unix]# uname
-a
Linux MTGK02 2.4.20-31.9smp #1 SMP Tue Apr 13 17:40:10 EDT 2004 i686 i686 i386 GNU/Linux [root@MTGK02 unix]#
[root@MTGK02 unix]# ulimit -n 32768 The available resources in a glance looks
way more than enough for handling the GNUGK with about 150 concurrent
calls in full proxy mode.
What could possibily be the reason of
hiting the resource limits on a machine which its only active process is
GNUGK? Since there is no other process (other than system processes) to use
any kind of resources, of course except mysql, first thing coming to
mind is that GNUGK is using some resources and is not releasing them
properly.
I am not sure if I missed something in OS
installation or GNUGK compilation/configuration; OR it is a part of
GNUGK's nature when it is used under somehow heavy real load.
It is really interesting to know
if there is anyone who is using GNUGK in an environment with about 500
concurrent calls in full proxy mode and more than 20 call requests
in a second at peak; and has no problem at all with it (let say the
GNUGK is working for them for about a month in this environment without even
being touched)? Even hearing from someone who is using GNUGK under the
real traffic with 100 to 200 concurrent calls in full proxy mode for
weeks and with no issues is really appreciated. In that case at least
I could be sure that whatever the problem is, it is coming from only me and it
is not a general issue.
Michal, thank you for the suggestions and
showing the problem is lack of resources but do you have any idea why this
large amount of capcity and resource is being used by GNUGK in about an
hour with something like 100 to 150 concurrent calls?
Thanks to everybody who shares their
thoughts on this,
Bahram.
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