Daniel-Constantin Mierla wrote:
Hello,
this looks like the TCP kernel buffer is overflows. How many OpenSER TCP
processes do you have?
children=100, --> ~208 processes. How can a TCP kernel buffer overflow?
Shouldn't TCP flow control take care of this?
regards
klaus
Cheers,
Daniel
On 07/26/06 15:44, Klaus Darilion wrote:
> Sorry - forgotten to attach the files :-)
>
> klaus
>
> Klaus Darilion wrote:
>> Hi!
>>
>> I suspect openser to have TCP problems under high load:
>> Scenario: sipp sends INVITE to openser, which replies with 404
>> I have 4x sipp with 1000 INVITEs/s and 1x sipp with 3000INVITEs/s,
>> thus 5 TCP connections
>>
>> After some time, I get error on the TCP connection with 3000INVITEs/s:
>> -->syslog.txt
>>
>> Looks like the first part of the request is missing, but sniffing
>> revealed that the request is proper formated as you see in the TCP
>> packet -->ngrep.txt
>>
>> Are there known high-load problems?
>>
>> Any ideas how I can debug this?
>>
>> regards
>> klaus
>>
>>
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>>
http://openser.org/cgi-bin/mailman/listinfo/users
>
> ------------------------------------------------------------------------
>
> graham:/home/darilion# ngrep -I test6.cap -q 106789
> input: test6.cap
>
> T 83.136.32.91:32904 -> 83.136.32.132:5060 [A]
> INVITE sip:service@83.136.32.132:5060 SIP/2.0..Via: SIP/2.0/TCP
> 83.136.32.91:5062;branch=z9hG4bK-106789-0..From: sipp
> <sip:sipp@83.136.32.91:5062>;tag=106789..To:
> sut <sip:service@83.136.32.132:5060>..Call-ID:
> 106789-10754@83.136.32.91..CSeq: 1 INVITE..Contact:
> sip:sipp@83.136.32.91:5062..Max-Forwards: 70..Subject: Perform
> ance Test..Content-Type: application/sdp..Content-Length:
> 135....v=0..o=user1 53655765 2353687637 IN IP4 83.136.32.91..s=-..c=IN
> IP4 83.136.32.91..t=0 0..m=audio
> 6002 RTP/AVP 0..a=rtpmap:0 PCMU/8000..INVITE
> sip:service@83.136.32.132:5060 SIP/2.0..Via: SIP/2.0/TCP
> 83.136.32.91:5062;branch=z9hG4bK-106790-0..From: sipp <sip:
> sipp@83.136.32.91:5062>;tag=106790..To: sut
> <sip:service@83.136.32.132:5060>..Call-ID:
> 106790-10754@83.136.32.91..CSeq: 1 INVITE..Contact:
> sip:sipp@83.136.32.91:5
> 062..Max-Forwards: 70..Subject: Performance Test..Content-Type:
> application/sdp..Content-Length: 135....v=0..o=user1 53655765
> 2353687637 IN IP4 83.136.32.91..s=-
> ..c=IN IP4 83.136.32.91..t=0 0..m=audio 6002 RTP/AVP 0..a=rtpmap:0
> PCMU/8000..INVITE sip:service@83.136.32.132:5060 SIP/2.0..Via:
> SIP/2.0/TCP 83.136.32.91:5062;br
> anch=z9hG4bK-106791-0..From: sipp
> <sip:sipp@83.136.32.91:5062>;tag=106791..To: sut
> <sip:service@83.136.32.132:5060>..Call-ID:
> 106791-10754@83.136.32.91..CSeq: 1 I
> NVITE..Contact: sip:sipp@83.136.32.91:5062..Max-Forwards:
> 70..Subject: Performance Test..Content-Type:
> application/sdp..Content-Length: 135....v=0..o=u
>
> ------------------------------------------------------------------------
>
> graham:/home/darilion# Jul 26 14:29:08 graham
> /usr/sbin/openser[19736]: ERROR:parse_first_line: method not followed
> by SP
> Jul 26 14:29:08 graham /usr/sbin/openser[19736]:
> ERROR:parse_first_line: bad message
> Jul 26 14:29:08 graham /usr/sbin/openser[19736]: ERROR: parse_msg:
> message=<-106789-0^M From: sipp
> <sip:sipp@83.136.32.91:5062>;tag=106789^M To: sut
> <sip:service@83.136.32.132:5060>^M Call-ID:
> 106789-10754(a)83.136.32.91^M CSeq: 1 INVITE^M Contact:
> sip:sipp@83.136.32.91:5062^M Max-Forwards: 70^M Subject: Performance
> Test^M Content-Type: application/sdp^M Content-Length: 135^M ^M v=0^M
> o=user1 53655765 2353687637 IN IP4 83.136.32.91^M s=-^M c=IN IP4
> 83.136.32.91^M t=0 0^M m=audio 6002 RTP/AVP 0^M a=rtpmap:0 PCMU/8000^M >
> Jul 26 14:29:08 graham /usr/sbin/openser[19736]: ERROR: receive_msg:
> parse_msg failed
>
> ------------------------------------------------------------------------
>
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