thsk steven, i've to do some test first as well.
As for the main problem, i put back the sync clock every night and do far no peaks on cpu sys. So the solution for me was to put fs compiled with tcmalloc.
Regards,
António
On 03/01/2017 01:02 PM, Steven Ayre wrote:
We're planning on rolling it out but haven't yet done so. Need to schedule some testing on it first.
I suspect the risk he refers to is if you're manually changing the system clock you can cause large clock jumps. That can affect CDR timestamps, either billing for longer periods than you should or getting negative call durations.
If you're using the NTP daemon to get constant adjustments, it's configured correctly, it starts on boot, is trustworthy, refuses to make large clock changes and you're monitoring it properly you'll probably be fine. I'd suggest using UTC for the system clock too, to guarantee you're not seeing any DST jumps.
Steve
On 24 February 2017 at 18:02, Antonio Silva <asilva@wirelessmundi.com> wrote:
Hi Steven,______________________________
Thanks for the tips.
i don't use sync_clock_when_idle because it waits until there is 0 calls, if you never hit 0 calls then the clock is never sync, i wanted to be sure that is done.
didn't know about "enable-use-system-time", just see the commit and there is a note from Anthony: "add enable-use-system-time param to switch.conf.xml use at your own risk", are you using it? does it affect performance?
I've to tried it.
About cpu sys to high and getting block, using tcmalloc seams to solve it, today everything went ok, no peaks in cpu sys.
Next week i'll put back the sync_clock.
Regards,
On 02/24/2017 02:31 PM, Steven Ayre wrote:
NTP adjusts the system clock while FS initialises a monotonic clock on start. FS doesn't see adjustments for drift by NTP.
sync_clock_when_idle is better than sync_clock.
You can also use the enable-use-system-time option which'll get it to use the system (and therefore NTP) time.
On 23 February 2017 at 23:14, Antonio Silva <asilva@wirelessmundi.com> wrote:
i had a issue with cdr timestamp and the system date, after uptime of 140 days fs clock was behind 1min.______________________________
It has something between system clock and ntp, so to force fs to keep up i force the sync_clock.
On 02/24/2017 12:06 AM, Brian West wrote:
First why did you ever call sync_clock?
On Thu, Feb 23, 2017 at 4:51 PM, Antonio Silva <asilva@wirelessmundi.com> wrote:
Hi Brian,______________________________
Not for today, the first time it happens was my first though something with the traffic, but i couldn't find any association with the type of traffic. Actually after restart fs i receive traffic from the same endpoints, same type of calls and the issue don't reproduce until next morning...
There was something i was doing at 00 every day, the command "fsctl sync_clock"... well i just disabled it today. I've to wait until tomorrow to check the results.
I just install fs compiled with tcmalloc, so if there is no problems i will put back the "sync_clock " command to really check if it could be the cause.
Right now i'm quite lost on what to do more...
On 02/23/2017 11:37 PM, Brian West wrote:
Do you have pcaps of the traffic that may trigger this behavior?
/b
On Thu, Feb 23, 2017 at 2:58 PM, Antonio Silva <asilva@wirelessmundi.com> wrote:
Thanks Juan, that's it, i was missing the dev pkg.______________________________
On 02/23/2017 08:34 PM, Juan Pablo Godoy Macari wrote:
Antonio, you should install this:
apt-get install libgoogle-perftools-dev
Regards,
2017-02-23 16:26 GMT-03:00 Juan Pablo Godoy Macari <jpgodoy@redvoiss.net>:
Try this: ./configure LIBS="-ltcmalloc"
2017-02-23 16:19 GMT-03:00 Antonio Silva <asilva@wirelessmundi.com>:
Hi,______________________________
Did you compile fs in debian with tcmalloc?
didn't work for me... do i miss something?
root@dev:/usr/src/freeswitch.git# apt-get install libtcmalloc-minimal4
root@dev:/usr/src/freeswitch.git# export LIBS=-ltcmalloc
root@dev:/usr/src/freeswitch.git# ./configure
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /bin/mkdir -p
checking for gawk... no
checking for mawk... mawk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking whether make supports nested variables... (cached) yes
checking build system type... x86_64-unknown-linux-gnu
checking host system type... x86_64-unknown-linux-gnu
checking for style of include used by make... GNU
checking for gcc... gcc
checking whether the C compiler works... no
configure: error: in `/usr/src/freeswitch.git':
configure: error: C compiler cannot create executables
On 02/23/2017 07:56 PM, Antonio Silva wrote:
Hi Juan,
Thanks for the tips!!
Unfortunately i cannot test with -nosql option, i need to have the sip_registration fill to be able to send options to natted endpoints. But i don't think the issue is in db, i use postgres and to get better performance from it i run it on tmpfs.
I read about tcmalloc, but from jira FS-7315, i get the idea that it didn't change anything.. but i guess i can try it and post the results, from the bt i do see some calls been done to malloc, but not sure if they are locking or not.
Regards,
On 02/23/2017 06:52 PM, Juan Pablo Godoy Macari wrote:
Hello Antonio,
I had the same issue, to fix it i tried many things written in this mail list. Try running FS with -nosql option, if that doesn't work recompile FS with tcmalloc (from google's perfomance tools).
That did it for me.
Regards,Juan Pablo.
2017-02-23 13:26 GMT-03:00 Antonio Silva <asilva@wirelessmundi.com>:
Hi,
i'm having an issue with FS that gets lock every morning with cpu sys
hitting 80%, because is limited in fs with min-idle, it could reach the
100%, so the calls are rejected by load, to solve the problem i kill fs
and start it again.
I discard a load issue, because after restarting freeswitch the system
increases in number of sessions/cps and no problems at all until next
day.... it's given me crazy... i've enough memory, lots of cores...
after restart fs the system stays at less than 30% of cpu usage.
Right now i have hpet as clocksource, transcoding is minimal (use
inheric_codec, only happens because of different ptimes with some
endpoints) .
anyone having similar problem? or any tip i can do to debug this issue?
For info the Jira ticket can be located at
https://freeswitch.org/jira/browse/FS-9957 ,
i've done a gcore, top, htop when the system is with high cpu sys but i
can't figure the thread that is causing the issue... initial i thought
it was because of module lua (most of my logic is done there), but today
only 2 threads where running mod_lua when it happen.
Appreciate the help.
--
Saludos / Regards / Cumprimentos,
António silva
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