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apt.get at gmail.com
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 Posted: Fri Jun 12, 2009 5:20 pm Post subject: [Freeswitch-users] high latency |
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Greetings,
I'm new to freeswitch, just playing with it in a home/small office at
present. Overall I've been really impressed with it.
One issue we've noticed is a pronounced latency on some or perhaps all
calls over roughly 500 seconds in duration. The latency is
approximately 3 seconds or more round trip. I tried setting
jitterbuffer_msec=20 but it has not prevented the problem. The call
quality is otherwise good with no noticeable choppiness or jitter.
Other local network traffic appears to be irrelevant, as in the
latency seems to occur even when the LAN is idle or experiencing only
sporadic bursts of activity, like typical browsing.
I read the FAQ and searched jitter, lag and latency in the wiki and
list archive but didn't come up with anything. Is this a known issue?
Could it be that the problem is specific to my platform? I'm running
the freeswitch package on pfsense (FreeBSD-based) and nobody in the
pfsense forums seems to know the cause or solution, although others
have reported the same issue.
Much thanks for your input,
db
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msc at freeswitch.org
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| Posted: Fri Jun 12, 2009 5:35 pm Post subject: [Freeswitch-users] high latency |
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Can you describe your setup? Need to know what kind of OS and hardware is running FS as well as what kind of phones. Any NAT involved?
-MC
On Fri, Jun 12, 2009 at 3:14 PM, David Burgess <apt.get@gmail.com (apt.get@gmail.com)> wrote:
| Quote: | Greetings,
I'm new to freeswitch, just playing with it in a home/small office at
present. Overall I've been really impressed with it.
One issue we've noticed is a pronounced latency on some or perhaps all
calls over roughly 500 seconds in duration. The latency is
approximately 3 seconds or more round trip. I tried setting
jitterbuffer_msec=20 but it has not prevented the problem. The call
quality is otherwise good with no noticeable choppiness or jitter.
Other local network traffic appears to be irrelevant, as in the
latency seems to occur even when the LAN is idle or experiencing only
sporadic bursts of activity, like typical browsing.
I read the FAQ and searched jitter, lag and latency in the wiki and
list archive but didn't come up with anything. Is this a known issue?
Could it be that the problem is specific to my platform? I'm running
the freeswitch package on pfsense (FreeBSD-based) and nobody in the
pfsense forums seems to know the cause or solution, although others
have reported the same issue.
Much thanks for your input,
db
_______________________________________________
Freeswitch-users mailing list
Freeswitch-users@lists.freeswitch.org (Freeswitch-users@lists.freeswitch.org)
http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
http://www.freeswitch.org
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apt.get at gmail.com
Guest
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| Posted: Fri Jun 12, 2009 5:55 pm Post subject: [Freeswitch-users] high latency |
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On Fri, Jun 12, 2009 at 4:33 PM, Michael Collins<msc@freeswitch.org> wrote:
| Quote: | Can you describe your setup? Need to know what kind of OS and hardware is
running FS as well as what kind of phones. Any NAT involved?
-MC
|
FS is running inside pfsense, which is a freeBSD-based firewall
(pfsense.org). Hardware is a lightly loaded Soekris net5501 (500 MHz
Geode x86, 512 MB RAM)(www.soekris.com).
FS external and internal profiles are both listening on WAN with a
public IP address. My extensions are 2 lines on a Linksys PAP2T
residing on the LAN, registered to the internal profile on the WAN
interface. All calls are made via a sip trunk.
PAP2T normally reports a decode latency in the neighborhood of 30 ms
and jitter of 5 ms. Ping time to my provider's rtp servers is ~42 ms.
Every call starts out with imperceptible latency, but at some point
the caller notices a long delay, as I said, usually around 3 seconds,
and usually only on calls lasting 500 seconds or more.
Anything else I can provide?
db
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http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
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msc at freeswitch.org
Guest
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| Posted: Fri Jun 12, 2009 6:32 pm Post subject: [Freeswitch-users] high latency |
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On Fri, Jun 12, 2009 at 3:53 PM, David Burgess <apt.get@gmail.com (apt.get@gmail.com)> wrote:
| Quote: | On Fri, Jun 12, 2009 at 4:33 PM, Michael Collins<msc@freeswitch.org (msc@freeswitch.org)> wrote:
| Quote: | Can you describe your setup? Need to know what kind of OS and hardware is
running FS as well as what kind of phones. Any NAT involved?
-MC
|
FS is running inside pfsense, which is a freeBSD-based firewall
(pfsense.org). Hardware is a lightly loaded Soekris net5501 (500 MHz
Geode x86, 512 MB RAM)(www.soekris.com).
FS external and internal profiles are both listening on WAN with a
public IP address. My extensions are 2 lines on a Linksys PAP2T
residing on the LAN, registered to the internal profile on the WAN
interface. All calls are made via a sip trunk.
PAP2T normally reports a decode latency in the neighborhood of 30 ms
and jitter of 5 ms. Ping time to my provider's rtp servers is ~42 ms.
Every call starts out with imperceptible latency, but at some point
the caller notices a long delay, as I said, usually around 3 seconds,
and usually only on calls lasting 500 seconds or more.
Anything else I can provide? |
Hmm... Might want to ask Mark Crane (IRC: mcrane) if he's seen anything like this with FS+pfSense. The FS devs aren't exactly keen on FS + FBSD because of some issues between a FS dependency (APR) and the FBSD threading model. Still, on a light load I wouldn't expect this kind of behavior.
-MC |
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mrene_lists at avgs.ca
Guest
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| Posted: Fri Jun 12, 2009 6:35 pm Post subject: [Freeswitch-users] high latency |
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Try <action application="set" data="rtp_autoflush=true" />
Math
On 12-Jun-09, at 7:28 PM, Michael Collins wrote:
| Quote: |
On Fri, Jun 12, 2009 at 3:53 PM, David Burgess <apt.get@gmail.com (apt.get@gmail.com)> wrote:
| Quote: | On Fri, Jun 12, 2009 at 4:33 PM, Michael Collins<msc@freeswitch.org (msc@freeswitch.org)> wrote:
| Quote: | Can you describe your setup? Need to know what kind of OS and hardware is
running FS as well as what kind of phones. Any NAT involved?
-MC
|
FS is running inside pfsense, which is a freeBSD-based firewall
(pfsense.org). Hardware is a lightly loaded Soekris net5501 (500 MHz
Geode x86, 512 MB RAM)(www.soekris.com).
FS external and internal profiles are both listening on WAN with a
public IP address. My extensions are 2 lines on a Linksys PAP2T
residing on the LAN, registered to the internal profile on the WAN
interface. All calls are made via a sip trunk.
PAP2T normally reports a decode latency in the neighborhood of 30 ms
and jitter of 5 ms. Ping time to my provider's rtp servers is ~42 ms.
Every call starts out with imperceptible latency, but at some point
the caller notices a long delay, as I said, usually around 3 seconds,
and usually only on calls lasting 500 seconds or more.
Anything else I can provide? |
Hmm... Might want to ask Mark Crane (IRC: mcrane) if he's seen anything like this with FS+pfSense. The FS devs aren't exactly keen on FS + FBSD because of some issues between a FS dependency (APR) and the FBSD threading model. Still, on a light load I wouldn't expect this kind of behavior.
-MC
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http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
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apt.get at gmail.com
Guest
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| Posted: Fri Jun 12, 2009 7:59 pm Post subject: [Freeswitch-users] high latency |
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On Fri, Jun 12, 2009 at 5:34 PM, Mathieu Rene<mrene_lists@avgs.ca> wrote:
| Quote: | Try <action application="set" data="rtp_autoflush=true" />
|
Thanks, I will try that.
| Quote: | Hmm... Might want to ask Mark Crane (IRC: mcrane) if he's seen anything like
this with FS+pfSense.
|
Yeah, we've discussed it. He's experienced the same thing but doesn't
have an answer at this point.
The FS devs aren't exactly keen on FS + FBSD because
| Quote: | of some issues between a FS dependency (APR) and the FBSD threading model.
Still, on a light load I wouldn't expect this kind of behavior.
|
Interesting. Thanks for the feedback. I'll let the list know what I find out.
db
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apt.get at gmail.com
Guest
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| Posted: Wed Jun 17, 2009 4:17 pm Post subject: [Freeswitch-users] high latency |
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On Fri, Jun 12, 2009 at 5:34 PM, Mathieu Rene<mrene_lists@avgs.ca> wrote:
| Quote: | Try <action application="set" data="rtp_autoflush=true" />
Math
|
This seems to have greatly reduced but not eliminated late-onset latency :p
The latest version of the pfsense-freeswitch package is based on
freeswitch 13784 and claims to have eliminated the issue, but I
haven't tried it yet.
db
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