[OpenSIPS-Users] UDP workers consume 100% CPU

Vitalii Aleksandrov vitalik.voip at gmail.com
Wed Aug 7 07:01:55 EDT 2019


Hi,

I'm using libssl-1.1.1-1ubuntu2.1~18.04.4

Since I need SIP over TLS I can't just remove proto_tls. Will try to 
reproduce it again and collect more data.

On 07.08.19 13:18, Bogdan-Andrei Iancu wrote:
> Hi Vitalii,
>
> As the backtraces show, it is a deadlock in TLS - if you remove the 
> proto_tls, you will not experience this issue anymore. The root 
> problem is not in OpenSIPS itself but in the libssl/libcrypto - what 
> versions are you using for these libs ?
>
> Regards,
>
> Bogdan-Andrei Iancu
>
> OpenSIPS Founder and Developer
>   https://www.opensips-solutions.com
> OpenSIPS Summit 2019
>   https://www.opensips.org/events/Summit-2019Amsterdam/
>
> On 08/05/2019 09:13 PM, Vitalii Aleksandrov wrote:
>> Hi,
>>
>> I have a test opensips 2.4.6 (last week's checkout from 2.4 branch) 
>> and after short load testing it started to consume all CPU resources.
>>
>> Here is what opensips floods to syslog:
>> Aug  3 13:25:01 l /opensips[4774]: WARNING:core:utimer_ticker: utimer 
>> task <tm-utimer> already scheduled for 114023190 ms (now 176231430 
>> ms), it may overlap..
>> Aug  3 13:25:02 l /opensips[4774]: WARNING:core:utimer_ticker: utimer 
>> task <tm-utimer> already scheduled for 114023190 ms (now 176231530 
>> ms), it may overlap..
>> Aug  3 13:25:02 l /opensips[4774]: WARNING:core:utimer_ticker: utimer 
>> task <tm-utimer> already scheduled for 114023190 ms (now 176231630 
>> ms), it may overlap..
>> Aug  3 13:25:02 l /opensips[4774]: WARNING:core:utimer_ticker: utimer 
>> task <tm-utimer> already scheduled for 114023190 ms (now 176231730 
>> ms), it may overlap..
>> Aug  3 13:25:02 l /opensips[4774]: WARNING:core:utimer_ticker: utimer 
>> task <tm-utimer> already scheduled for 114023190 ms (now 176231830 
>> ms), it may overlap..
>> Aug  3 13:25:02 l /opensips[4774]: WARNING:core:utimer_ticker: utimer 
>> task <tm-utimer> already scheduled for 114023190 ms (now 176231930 
>> ms), it may overlap..
>> Aug  3 13:25:02 l /opensips[4774]: WARNING:core:utimer_ticker: utimer 
>> task <tm-utimer> already scheduled for 114023190 ms (now 176232030 
>> ms), it may overlap..
>> Aug  3 13:25:02 l /opensips[4774]: WARNING:core:timer_ticker: timer 
>> task <tm-timer> already scheduled for 114023090 ms (now 176232030 
>> ms), it may overlap..
>>
>> Where 4774 is: "Process::  ID=7 PID=4774 Type=timer"
>>
>> Here is the TOP output for time consuming processes:
>>   PID USER         PR  NI    VIRT    RES      SHR    S  %CPU %MEM     
>> TIME+ COMMAND
>>  4801 opensips  20   0  721040  28496  24240 R  52.9  0.7 1817:08 
>> opensips
>>  4802 opensips  20   0  721040  27724  23588 R  47.1  0.7 1813:06 
>> opensips
>>  4806 opensips  20   0  721040  27640  23532 R  47.1  0.7 1814:41 
>> opensips
>>  4833 opensips  20   0  721040  28848  24812 R  47.1  0.7 1815:16 
>> opensips
>>  4803 opensips  20   0  721044  27928  23732 R  41.2  0.7 1817:09 
>> opensips
>>  4804 opensips  20   0  721040  28188  23996 R  41.2  0.7 1816:05 
>> opensips
>>  4799 opensips  20   0  721040  28272  24172 R  35.3  0.7 1813:29 
>> opensips
>>  4800 opensips  20   0  721040  28340  24204 R  29.4  0.7 1816:52 
>> opensips
>>  4805 opensips  20   0  723256  29620  25300 R  29.4  0.8 1819:28 
>> opensips
>>
>> And here is the "opensipsctl ps" for them:
>> Process::  ID=32 PID=4799 Type=SIP receiver udp:127.0.0.1:5070
>> Process::  ID=33 PID=4800 Type=SIP receiver udp:127.0.0.1:5070
>> Process::  ID=34 PID=4801 Type=SIP receiver udp:127.0.0.1:5070
>> Process::  ID=35 PID=4802 Type=SIP receiver udp:127.0.0.1:5070
>> Process::  ID=36 PID=4803 Type=SIP receiver udp:127.0.0.1:5070
>> Process::  ID=37 PID=4804 Type=SIP receiver udp:127.0.0.1:5070
>> Process::  ID=38 PID=4805 Type=SIP receiver udp:127.0.0.1:5070
>> Process::  ID=39 PID=4806 Type=SIP receiver udp:127.0.0.1:5070
>> Process::  ID=66 PID=4833 Type=TCP receiver
>>
>> "strace" output for those burning processes just floods with:
>> 11:07:04.042794 sched_yield()           = 0
>> 11:07:04.042869 sched_yield()           = 0
>> 11:07:04.042943 sched_yield()           = 0
>> 11:07:04.043016 sched_yield()           = 0
>> 11:07:04.043090 sched_yield()           = 0
>> 11:07:04.043164 sched_yield()           = 0
>>
>> Unfortunately this opensips is striped and gdb output is limited.
>> GDB bt of TCP receiver:
>> (gdb) bt
>> #0  0x00007f939211fe57 in sched_yield () at 
>> ../sysdeps/unix/syscall-template.S:78
>> #1  0x00007f936fffc14d in ?? () from 
>> /usr/lib/x86_64-linux-gnu/opensips/modules/proto_tls.so
>> #2  0x00007f93791698d5 in send_pr_buffer () from 
>> /usr/lib/x86_64-linux-gnu/opensips/modules/tm.so
>> #3  0x00007f93791626b8 in relay_reply () from 
>> /usr/lib/x86_64-linux-gnu/opensips/modules/tm.so
>> #4  0x00007f937919fe2a in timer_routine () from 
>> /usr/lib/x86_64-linux-gnu/opensips/modules/tm.so
>> #5  0x000055e00034a58a in handle_timer_job ()
>> #6  0x000055e00041ae2a in tcp_worker_proc_loop ()
>> #7  0x000055e000427218 in tcp_start_processes ()
>> #8  0x000055e0002e6837 in main ()
>>
>> GDB bt of UDP receiver:
>> #0  0x00007f939211fe57 in sched_yield () at 
>> ../sysdeps/unix/syscall-template.S:78
>> #1  0x00007f936fffc14d in ?? () from 
>> /usr/lib/x86_64-linux-gnu/opensips/modules/proto_tls.so
>> #2  0x00007f93791698d5 in send_pr_buffer () from 
>> /usr/lib/x86_64-linux-gnu/opensips/modules/tm.so
>> #3  0x00007f93791626b8 in relay_reply () from 
>> /usr/lib/x86_64-linux-gnu/opensips/modules/tm.so
>> #4  0x00007f9379165015 in reply_received () from 
>> /usr/lib/x86_64-linux-gnu/opensips/modules/tm.so
>> #5  0x000055e000322fed in forward_reply ()
>> #6  0x000055e000309d1d in receive_msg ()
>> #7  0x000055e00042b4be in ?? ()
>> #8  0x000055e000413dd8 in udp_start_processes ()
>> #9  0x000055e0002e6724 in main ()
>>
>> Those workers don't process any incoming SIP messages and just stay 
>> in this infinite loop.
>>
>> Any input is very appreciated.
>>
>>
>> _______________________________________________
>> Users mailing list
>> Users at lists.opensips.org
>> http://lists.opensips.org/cgi-bin/mailman/listinfo/users
>



More information about the Users mailing list