Hello!
We are plotting the call success rate on each of our proxies.
Using the Kamailio snmpstats module, we try to obtain three counters to plot them on a graph:
Total Calls
Active Calls
Error Calls
Most of the time, everything works well, and we obtain sensible values:
snmpwalk -c mycommunity -v 2c W.X.Y.Z 1.3.6.1.4.1.34352.3.1.3.1.3.2 -O n
.1.3.6.1.4.1.34352.3.1.3.1.3.2.1.0 = Gauge32: 309 -> Total Calls
.1.3.6.1.4.1.34352.3.1.3.1.3.2.2.0 = Gauge32: 95 -> Active Calls
.1.3.6.1.4.1.34352.3.1.3.1.3.2.3.0 = Gauge32: 214 -> Error calls
However, when our proxies are facing intense peaks of failed calls in a short time span, sometimes, the "Error Calls" counter returns a value higher than "Total Calls". As a result, "Active Calls" suddenly reaches a value close to the maximum of a Gauge32 (because T o t a l C a l l s − E r r o r C a l l s < 0 ).
snmpwalk -c mycommunity -v 2c W.X.Y.Z 1.3.6.1.4.1.34352.3.1.3.1.3.2 -O n
.1.3.6.1.4.1.34352.3.1.3.1.3.2.1.0 = Gauge32: 153 -> Total Calls
.1.3.6.1.4.1.34352.3.1.3.1.3.2.2.0 = Gauge32: 4294967226 -> Active Calls
.1.3.6.1.4.1.34352.3.1.3.1.3.2.3.0 = Gauge32: 223 -> Error calls
As a result, our graphs make no more sense.
We are currently running kamailio 5.6.4.
Any idea if it's a bug or a configuration issue?
Regards,
Igor.
Hello Igor,
this sounds like a bug to me. The 5.6.x branch is not supported anymore, but after I a quick look I did not spotted any recent bugfixes in the modules that could match.
Cheers,
Henning
-- Henning Westerholt – https://skalatan.de/blog/ Kamailio services – https://gilawa.comhttps://gilawa.com/
From: Igor Potjevlesch via sr-users sr-users@lists.kamailio.org Sent: Montag, 13. Januar 2025 13:40 To: sr-users@lists.kamailio.org Cc: Igor Potjevlesch igor.potjevlesch@gmail.com Subject: [SR-Users] Module snmpstats reporting inconsistent call success metrics on intense peaks of failed calls
Hello!
We are plotting the call success rate on each of our proxies. Using the Kamailio snmpstats module, we try to obtain three counters to plot them on a graph:
Total Calls Active Calls Error Calls
Most of the time, everything works well, and we obtain sensible values: snmpwalk -c mycommunity -v 2c W.X.Y.Z 1.3.6.1.4.1.34352.3.1.3.1.3.2 -O n
.1.3.6.1.4.1.34352.3.1.3.1.3.2.1.0 = Gauge32: 309 -> Total Calls .1.3.6.1.4.1.34352.3.1.3.1.3.2.2.0 = Gauge32: 95 -> Active Calls .1.3.6.1.4.1.34352.3.1.3.1.3.2.3.0 = Gauge32: 214 -> Error calls
However, when our proxies are facing intense peaks of failed calls in a short time span, sometimes, the "Error Calls" counter returns a value higher than "Total Calls". As a result, "Active Calls" suddenly reaches a value close to the maximum of a Gauge32 (because T o t a l C a l l s − E r r o r C a l l s < 0 ).
snmpwalk -c mycommunity -v 2c W.X.Y.Z 1.3.6.1.4.1.34352.3.1.3.1.3.2 -O n
.1.3.6.1.4.1.34352.3.1.3.1.3.2.1.0 = Gauge32: 153 -> Total Calls .1.3.6.1.4.1.34352.3.1.3.1.3.2.2.0 = Gauge32: 4294967226 -> Active Calls .1.3.6.1.4.1.34352.3.1.3.1.3.2.3.0 = Gauge32: 223 -> Error calls
As a result, our graphs make no more sense.
We are currently running kamailio 5.6.4.
Any idea if it's a bug or a configuration issue?
Regards,
Igor.
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Hello Henning,
Thank you for your check.
Do you mean that even if we upgrade to the latest branch, we will probably face the same issue?
Regards,
Igor.
De : Henning Westerholt hw@gilawa.com Envoyé : lundi 13 janvier 2025 14:36 À : Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org Cc : Igor Potjevlesch igor.potjevlesch@gmail.com Objet : RE: [SR-Users] Module snmpstats reporting inconsistent call success metrics on intense peaks of failed calls
Hello Igor,
this sounds like a bug to me. The 5.6.x branch is not supported anymore, but after I a quick look I did not spotted any recent bugfixes in the modules that could match.
Cheers,
Henning
Hello Igor,
hard to say 100%, because it could be also caused from another module (the snmp modules also takes data from other sources I think).
Generally, I would always of course recommended to use a maintained version in production.
Cheers,
Henning
From: Igor Potjevlesch igor.potjevlesch@gmail.com Sent: Montag, 13. Januar 2025 15:12 To: Henning Westerholt hw@gilawa.com; 'Kamailio (SER) - Users Mailing List' sr-users@lists.kamailio.org Subject: RE: [SR-Users] Module snmpstats reporting inconsistent call success metrics on intense peaks of failed calls
Hello Henning,
Thank you for your check. Do you mean that even if we upgrade to the latest branch, we will probably face the same issue?
Regards,
Igor.
De : Henning Westerholt hw@gilawa.com Envoyé : lundi 13 janvier 2025 14:36 À : Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org Cc : Igor Potjevlesch igor.potjevlesch@gmail.com Objet : RE: [SR-Users] Module snmpstats reporting inconsistent call success metrics on intense peaks of failed calls
Hello Igor,
this sounds like a bug to me. The 5.6.x branch is not supported anymore, but after I a quick look I did not spotted any recent bugfixes in the modules that could match.
Cheers,
Henning
-- Henning Westerholt – https://skalatan.de/blog/ Kamailio services – https://gilawa.comhttps://gilawa.com/
From: Igor Potjevlesch via sr-users <sr-users@lists.kamailio.orgmailto:sr-users@lists.kamailio.org> Sent: Montag, 13. Januar 2025 13:40 To: sr-users@lists.kamailio.orgmailto:sr-users@lists.kamailio.org Cc: Igor Potjevlesch <igor.potjevlesch@gmail.commailto:igor.potjevlesch@gmail.com> Subject: [SR-Users] Module snmpstats reporting inconsistent call success metrics on intense peaks of failed calls
Hello!
We are plotting the call success rate on each of our proxies. Using the Kamailio snmpstats module, we try to obtain three counters to plot them on a graph:
Total Calls Active Calls Error Calls
Most of the time, everything works well, and we obtain sensible values: snmpwalk -c mycommunity -v 2c W.X.Y.Z 1.3.6.1.4.1.34352.3.1.3.1.3.2 -O n
.1.3.6.1.4.1.34352.3.1.3.1.3.2.1.0 = Gauge32: 309 -> Total Calls .1.3.6.1.4.1.34352.3.1.3.1.3.2.2.0 = Gauge32: 95 -> Active Calls .1.3.6.1.4.1.34352.3.1.3.1.3.2.3.0 = Gauge32: 214 -> Error calls
However, when our proxies are facing intense peaks of failed calls in a short time span, sometimes, the "Error Calls" counter returns a value higher than "Total Calls". As a result, "Active Calls" suddenly reaches a value close to the maximum of a Gauge32 (because T o t a l C a l l s − E r r o r C a l l s < 0 ).
snmpwalk -c mycommunity -v 2c W.X.Y.Z 1.3.6.1.4.1.34352.3.1.3.1.3.2 -O n
.1.3.6.1.4.1.34352.3.1.3.1.3.2.1.0 = Gauge32: 153 -> Total Calls .1.3.6.1.4.1.34352.3.1.3.1.3.2.2.0 = Gauge32: 4294967226 -> Active Calls .1.3.6.1.4.1.34352.3.1.3.1.3.2.3.0 = Gauge32: 223 -> Error calls
As a result, our graphs make no more sense.
We are currently running kamailio 5.6.4.
Any idea if it's a bug or a configuration issue?
Regards,
Igor.
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Hello Henning,
Undertstood! Thank you. If there is nothing to do, we will move on the upgrade.
Regards,
Igor.
De : Henning Westerholt hw@gilawa.com Envoyé : lundi 13 janvier 2025 17:20 À : 'Kamailio (SER) - Users Mailing List' sr-users@lists.kamailio.org Cc : Igor Potjevlesch igor.potjevlesch@gmail.com Objet : RE: [SR-Users] Module snmpstats reporting inconsistent call success metrics on intense peaks of failed calls
Hello Igor,
hard to say 100%, because it could be also caused from another module (the snmp modules also takes data from other sources I think).
Generally, I would always of course recommended to use a maintained version in production.
Cheers,
Henning
From: Igor Potjevlesch <igor.potjevlesch@gmail.com mailto:igor.potjevlesch@gmail.com > Sent: Montag, 13. Januar 2025 15:12 To: Henning Westerholt <hw@gilawa.com mailto:hw@gilawa.com >; 'Kamailio (SER) - Users Mailing List' <sr-users@lists.kamailio.org mailto:sr-users@lists.kamailio.org > Subject: RE: [SR-Users] Module snmpstats reporting inconsistent call success metrics on intense peaks of failed calls
Hello Henning,
Thank you for your check.
Do you mean that even if we upgrade to the latest branch, we will probably face the same issue?
Regards,
Igor.
De : Henning Westerholt <hw@gilawa.com mailto:hw@gilawa.com > Envoyé : lundi 13 janvier 2025 14:36 À : Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org mailto:sr-users@lists.kamailio.org > Cc : Igor Potjevlesch <igor.potjevlesch@gmail.com mailto:igor.potjevlesch@gmail.com > Objet : RE: [SR-Users] Module snmpstats reporting inconsistent call success metrics on intense peaks of failed calls
Hello Igor,
this sounds like a bug to me. The 5.6.x branch is not supported anymore, but after I a quick look I did not spotted any recent bugfixes in the modules that could match.
Cheers,
Henning
Note that SNMP counters wrap, so it may be expected behaviour.
/O
On 14 Jan 2025, at 11:51, Igor Potjevlesch via sr-users sr-users@lists.kamailio.org wrote:
Hello Henning,
Undertstood! Thank you. If there is nothing to do, we will move on the upgrade.
Regards,
Igor.
De : Henning Westerholt <hw@gilawa.com mailto:hw@gilawa.com> Envoyé : lundi 13 janvier 2025 17:20 À : 'Kamailio (SER) - Users Mailing List' <sr-users@lists.kamailio.org mailto:sr-users@lists.kamailio.org> Cc : Igor Potjevlesch <igor.potjevlesch@gmail.com mailto:igor.potjevlesch@gmail.com> Objet : RE: [SR-Users] Module snmpstats reporting inconsistent call success metrics on intense peaks of failed calls
Hello Igor,
hard to say 100%, because it could be also caused from another module (the snmp modules also takes data from other sources I think).
Generally, I would always of course recommended to use a maintained version in production.
Cheers,
Henning
From: Igor Potjevlesch <igor.potjevlesch@gmail.com mailto:igor.potjevlesch@gmail.com> Sent: Montag, 13. Januar 2025 15:12 To: Henning Westerholt <hw@gilawa.com mailto:hw@gilawa.com>; 'Kamailio (SER) - Users Mailing List' <sr-users@lists.kamailio.org mailto:sr-users@lists.kamailio.org> Subject: RE: [SR-Users] Module snmpstats reporting inconsistent call success metrics on intense peaks of failed calls
Hello Henning,
Thank you for your check. Do you mean that even if we upgrade to the latest branch, we will probably face the same issue?
Regards,
Igor.
De : Henning Westerholt <hw@gilawa.com mailto:hw@gilawa.com> Envoyé : lundi 13 janvier 2025 14:36 À : Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org mailto:sr-users@lists.kamailio.org> Cc : Igor Potjevlesch <igor.potjevlesch@gmail.com mailto:igor.potjevlesch@gmail.com> Objet : RE: [SR-Users] Module snmpstats reporting inconsistent call success metrics on intense peaks of failed calls
Hello Igor,
this sounds like a bug to me. The 5.6.x branch is not supported anymore, but after I a quick look I did not spotted any recent bugfixes in the modules that could match.
Cheers,
Henning
-- Henning Westerholt – https://skalatan.de/blog/ Kamailio services – https://gilawa.com https://gilawa.com/
From: Igor Potjevlesch via sr-users <sr-users@lists.kamailio.org mailto:sr-users@lists.kamailio.org> Sent: Montag, 13. Januar 2025 13:40 To: sr-users@lists.kamailio.org mailto:sr-users@lists.kamailio.org Cc: Igor Potjevlesch <igor.potjevlesch@gmail.com mailto:igor.potjevlesch@gmail.com> Subject: [SR-Users] Module snmpstats reporting inconsistent call success metrics on intense peaks of failed calls
Hello!
We are plotting the call success rate on each of our proxies. Using the Kamailio snmpstats module, we try to obtain three counters to plot them on a graph:
Total Calls Active Calls Error Calls
Most of the time, everything works well, and we obtain sensible values: snmpwalk -c mycommunity -v 2c W.X.Y.Z 1.3.6.1.4.1.34352.3.1.3.1.3.2 -O n
.1.3.6.1.4.1.34352.3.1.3.1.3.2.1.0 = Gauge32: 309 -> Total Calls .1.3.6.1.4.1.34352.3.1.3.1.3.2.2.0 = Gauge32: 95 -> Active Calls .1.3.6.1.4.1.34352.3.1.3.1.3.2.3.0 = Gauge32: 214 -> Error calls
However, when our proxies are facing intense peaks of failed calls in a short time span, sometimes, the "Error Calls" counter returns a value higher than "Total Calls". As a result, "Active Calls" suddenly reaches a value close to the maximum of a Gauge32 (because T o t a l C a l l s − E r r o r C a l l s < 0 ).
snmpwalk -c mycommunity -v 2c W.X.Y.Z 1.3.6.1.4.1.34352.3.1.3.1.3.2 -O n
.1.3.6.1.4.1.34352.3.1.3.1.3.2.1.0 = Gauge32: 153 -> Total Calls .1.3.6.1.4.1.34352.3.1.3.1.3.2.2.0 = Gauge32: 4294967226 -> Active Calls .1.3.6.1.4.1.34352.3.1.3.1.3.2.3.0 = Gauge32: 223 -> Error calls
As a result, our graphs make no more sense.
We are currently running kamailio 5.6.4.
Any idea if it's a bug or a configuration issue?
Regards,
Igor.
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Hello Olle,
Do you mean there is a scale limit? Maybe because the counter is 32bits counter?
Regards,
Igor.
De : Olle E. Johansson oej@edvina.net Envoyé : mardi 14 janvier 2025 12:47 À : Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org Cc : Olle E Johansson oej@edvina.net; Henning Westerholt hw@gilawa.com; Igor Potjevlesch igor.potjevlesch@gmail.com Objet : Re: [SR-Users] Module snmpstats reporting inconsistent call success metrics on intense peaks of failed calls
Note that SNMP counters wrap, so it may be expected behaviour.
/O
On 14 Jan 2025, at 11:51, Igor Potjevlesch via sr-users <sr-users@lists.kamailio.org mailto:sr-users@lists.kamailio.org > wrote:
Hello Henning,
Undertstood! Thank you. If there is nothing to do, we will move on the upgrade.
Regards,
Igor.
De : Henning Westerholt < mailto:hw@gilawa.com hw@gilawa.com> Envoyé : lundi 13 janvier 2025 17:20 À : 'Kamailio (SER) - Users Mailing List' < mailto:sr-users@lists.kamailio.org sr-users@lists.kamailio.org> Cc : Igor Potjevlesch < mailto:igor.potjevlesch@gmail.com igor.potjevlesch@gmail.com> Objet : RE: [SR-Users] Module snmpstats reporting inconsistent call success metrics on intense peaks of failed calls
Hello Igor,
hard to say 100%, because it could be also caused from another module (the snmp modules also takes data from other sources I think).
Generally, I would always of course recommended to use a maintained version in production.
Cheers,
Henning
From: Igor Potjevlesch < mailto:igor.potjevlesch@gmail.com igor.potjevlesch@gmail.com> Sent: Montag, 13. Januar 2025 15:12 To: Henning Westerholt < mailto:hw@gilawa.com hw@gilawa.com>; 'Kamailio (SER) - Users Mailing List' < mailto:sr-users@lists.kamailio.org sr-users@lists.kamailio.org> Subject: RE: [SR-Users] Module snmpstats reporting inconsistent call success metrics on intense peaks of failed calls
Hello Henning,
Thank you for your check.
Do you mean that even if we upgrade to the latest branch, we will probably face the same issue?
Regards,
Igor.
De : Henning Westerholt < mailto:hw@gilawa.com hw@gilawa.com> Envoyé : lundi 13 janvier 2025 14:36 À : Kamailio (SER) - Users Mailing List < mailto:sr-users@lists.kamailio.org sr-users@lists.kamailio.org> Cc : Igor Potjevlesch < mailto:igor.potjevlesch@gmail.com igor.potjevlesch@gmail.com> Objet : RE: [SR-Users] Module snmpstats reporting inconsistent call success metrics on intense peaks of failed calls
Hello Igor,
this sounds like a bug to me. The 5.6.x branch is not supported anymore, but after I a quick look I did not spotted any recent bugfixes in the modules that could match.
Cheers,
Henning
Most SNMP counters roll over at some point. Clients are ready for that and handle the rollover.
There’s some text about it here: https://www.cisco.com/c/en/us/support/docs/ip/simple-network-management-prot...
and here
https://stackoverflow.com/questions/2718283/definition-of-snmp-gauge32-vs-co... Definition of SNMP Gauge32 vs Counter32 stackoverflow.com
Good to hear that there’s usage of the SNMP module. :-)
/O
On 15 Jan 2025, at 09:50, Igor Potjevlesch igor.potjevlesch@gmail.com wrote:
Hello Olle,
Do you mean there is a scale limit? Maybe because the counter is 32bits counter?
Regards,
Igor.
De : Olle E. Johansson <oej@edvina.net mailto:oej@edvina.net> Envoyé : mardi 14 janvier 2025 12:47 À : Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org mailto:sr-users@lists.kamailio.org> Cc : Olle E Johansson <oej@edvina.net mailto:oej@edvina.net>; Henning Westerholt <hw@gilawa.com mailto:hw@gilawa.com>; Igor Potjevlesch <igor.potjevlesch@gmail.com mailto:igor.potjevlesch@gmail.com> Objet : Re: [SR-Users] Module snmpstats reporting inconsistent call success metrics on intense peaks of failed calls
Note that SNMP counters wrap, so it may be expected behaviour.
/O
On 14 Jan 2025, at 11:51, Igor Potjevlesch via sr-users <sr-users@lists.kamailio.org mailto:sr-users@lists.kamailio.org> wrote:
Hello Henning,
Undertstood! Thank you. If there is nothing to do, we will move on the upgrade.
Regards,
Igor.
De : Henning Westerholt <hw@gilawa.com mailto:hw@gilawa.com> Envoyé : lundi 13 janvier 2025 17:20 À : 'Kamailio (SER) - Users Mailing List' <sr-users@lists.kamailio.org mailto:sr-users@lists.kamailio.org> Cc : Igor Potjevlesch <igor.potjevlesch@gmail.com mailto:igor.potjevlesch@gmail.com> Objet : RE: [SR-Users] Module snmpstats reporting inconsistent call success metrics on intense peaks of failed calls
Hello Igor,
hard to say 100%, because it could be also caused from another module (the snmp modules also takes data from other sources I think).
Generally, I would always of course recommended to use a maintained version in production.
Cheers,
Henning
From: Igor Potjevlesch <igor.potjevlesch@gmail.com mailto:igor.potjevlesch@gmail.com> Sent: Montag, 13. Januar 2025 15:12 To: Henning Westerholt <hw@gilawa.com mailto:hw@gilawa.com>; 'Kamailio (SER) - Users Mailing List' <sr-users@lists.kamailio.org mailto:sr-users@lists.kamailio.org> Subject: RE: [SR-Users] Module snmpstats reporting inconsistent call success metrics on intense peaks of failed calls
Hello Henning,
Thank you for your check. Do you mean that even if we upgrade to the latest branch, we will probably face the same issue?
Regards,
Igor.
De : Henning Westerholt <hw@gilawa.com mailto:hw@gilawa.com> Envoyé : lundi 13 janvier 2025 14:36 À : Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org mailto:sr-users@lists.kamailio.org> Cc : Igor Potjevlesch <igor.potjevlesch@gmail.com mailto:igor.potjevlesch@gmail.com> Objet : RE: [SR-Users] Module snmpstats reporting inconsistent call success metrics on intense peaks of failed calls
Hello Igor,
this sounds like a bug to me. The 5.6.x branch is not supported anymore, but after I a quick look I did not spotted any recent bugfixes in the modules that could match.
Cheers,
Henning
-- Henning Westerholt – https://skalatan.de/blog/ Kamailio services – https://gilawa.com https://gilawa.com/
From: Igor Potjevlesch via sr-users <sr-users@lists.kamailio.org mailto:sr-users@lists.kamailio.org> Sent: Montag, 13. Januar 2025 13:40 To: sr-users@lists.kamailio.org mailto:sr-users@lists.kamailio.org Cc: Igor Potjevlesch <igor.potjevlesch@gmail.com mailto:igor.potjevlesch@gmail.com> Subject: [SR-Users] Module snmpstats reporting inconsistent call success metrics on intense peaks of failed calls
Hello!
We are plotting the call success rate on each of our proxies. Using the Kamailio snmpstats module, we try to obtain three counters to plot them on a graph:
Total Calls Active Calls Error Calls
Most of the time, everything works well, and we obtain sensible values: snmpwalk -c mycommunity -v 2c W.X.Y.Z 1.3.6.1.4.1.34352.3.1.3.1.3.2 -O n
.1.3.6.1.4.1.34352.3.1.3.1.3.2.1.0 = Gauge32: 309 -> Total Calls .1.3.6.1.4.1.34352.3.1.3.1.3.2.2.0 = Gauge32: 95 -> Active Calls .1.3.6.1.4.1.34352.3.1.3.1.3.2.3.0 = Gauge32: 214 -> Error calls
However, when our proxies are facing intense peaks of failed calls in a short time span, sometimes, the "Error Calls" counter returns a value higher than "Total Calls". As a result, "Active Calls" suddenly reaches a value close to the maximum of a Gauge32 (because T o t a l C a l l s − E r r o r C a l l s < 0 ).
snmpwalk -c mycommunity -v 2c W.X.Y.Z 1.3.6.1.4.1.34352.3.1.3.1.3.2 -O n
.1.3.6.1.4.1.34352.3.1.3.1.3.2.1.0 = Gauge32: 153 -> Total Calls .1.3.6.1.4.1.34352.3.1.3.1.3.2.2.0 = Gauge32: 4294967226 -> Active Calls .1.3.6.1.4.1.34352.3.1.3.1.3.2.3.0 = Gauge32: 223 -> Error calls
As a result, our graphs make no more sense.
We are currently running kamailio 5.6.4.
Any idea if it's a bug or a configuration issue?
Regards,
Igor.
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