3 Feb
2010
3 Feb
'10
5:54 p.m.
Hello,
I was able to fix the problem, by enabling AHCI in the BIOS and
rebuilding initrd with the ahci driver. Instructions in link below
http://serverfault.com/questions/68793/enabling-ahci-in-rhel5-post-install
Current hdparm -t /dev/sda output
Timing buffered disk reads: 182 MB in 3.02 seconds = 60.29 MB/sec
Thanks for all the help.
Vikram.
Vikram Ragukumar wrote:
Daniel,
Thank you for your response.
Daniel-Constantin Mierla wrote:
Hello,
what version are you using? Do you have big traffic on it?
I am using version 1.5,
and there isn't much traffic.
Usual delays are coming from:
- lot of debugging with non-asynchronous syslog
This was a very useful tip. Turns
out that HD access times were very poor
hdparm -t /dev/hda output
Timing buffered disk reads: 12 MB in 3.48 seconds = 3.45 MB/sec
I tested registration times after setting debug=0 in the kamailio.cfg
file, and registrations were much quicker. I plan on working around this
issue by switching to AHCI mode from IDE mode.
Once again, Thank you very much.
Vikram.
On 2/3/10 1:14 AM, vragukumar(a)signalogic.com
wrote:
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Here is some more information from wireshark,
"No.","Time","Source","Destination","Protocol","Info"
"1","0.000000","x_lite_softphone","SIP_proxy","SIP","Request:
REGISTER
sip:SIP_server"
"2","0.000012","x_lite_softphone","SIP_proxy","SIP","Request:
REGISTER
sip:SIP_server"
"5","0.818876","SIP_proxy","SIP_server","SIP","Request:
REGISTER
sip:SIP_server"
"6","0.818886","SIP_proxy","SIP_server","SIP","Request:
REGISTER
sip:SIP_server"
"7","0.824475","SIP_server","SIP_proxy","SIP","Status:
200 OK (1
bindings)"
"15","2.635788","SIP_proxy","x_lite_softphone","SIP","Status:
200
OK (1
bindings)"
Looking at the timestamps for these SIP messages
- It takes the proxy 0.8s to relay REGISTER request to SIP server
- It takes the proxy 1.8s to relay 200 OK to the softphone
These time durations appear to be very long.
What are the expected time durations for these relay times? What
might be
causing relay times to be so large ?
Thanks in advance.
Regards,
Vikram.
Hello,
I am using an x-lite softphone to register with my SIP domain,
(a) Without an outbound proxy - Registration is successful and takes
about 3 seconds
(b) With an outbound proxy - Registration is successful but takes
nearly
15 seconds
I briefly describe below the sequence of SIP messages while using the
outbound proxy
Register softphone -> proxy
Register proxy -> SIP server
Register softphone -> proxy
407 Proxy authentication reqd. SIP server -> proxy
Register softphone -> proxy
407 Proxy authentication reqd. proxy -> softphone
Register softphone -> proxy (With Digest response)
Register proxy -> SIP server (With Digest response)
200 OK Sip server -> proxy
Register softphone -> proxy (With Digest response)
I am attaching a log with wireshark captures that show SIP messages
exchanged between the SIP server,SIP proxy and the x-lite softphone.
The
log shows several messages being duplicated (REGISTER, 200 OK)
1) Why does the softphone continue to send REGISTER messages after
receiving a 200 OK response ? (almost 15 repetitions of REGISTER after
receiving 200 OK)
2) What is the reason for the delay in registration times with/without
the proxy ?
Thanks and Regards,
Vikram.
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