"Reverse Clock Skew Detected" - what does it mean ?
Hi Guys Happy New Year ! - 4 hours to midnight here - what am I doing looking at the console log ???? Anyway, all the best for 2010, and when someone gets a chance to look at this, could someone please help me understand what the following error message means ? I've seen it a few times before and not seen anything untoward. My "production" system is running 1.0.4 - reported as (14460) but it is somewhat later than that (15xxx). I plan on doing a new SVN build over the holiday, but don't expect this error to go away ? Message is along the lines . . . . date & time "[CRIT] switch_time.c:454 Reverse Clock Skew Detected!" regards Dave
It means you have a profound jump in time like someone set the clock to an earlier time and it's recovering by re-syncing the clock. You can avoid this by using a monotonic clock which must not be possible on your system because it uses it by default. What OS is it? On Thu, Dec 31, 2009 at 2:22 PM, Dave Stevenson <stevendt@primrosebank.net>wrote:
Hi Guys
Happy New Year !
- 4 hours to midnight here - what am I doing looking at the console log ????
Anyway, all the best for 2010, and when someone gets a chance to look at this, could someone please help me understand what the following error message means ?
I've seen it a few times before and not seen anything untoward. My "production" system is running 1.0.4 - reported as (14460) but it is somewhat later than that (15xxx). I plan on doing a new SVN build over the holiday, but don't expect this error to go away ?
Message is along the lines . . . .
date & time "[CRIT] switch_time.c:454 Reverse Clock Skew Detected!"
regards Dave
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-- Anthony Minessale II FreeSWITCH http://www.freeswitch.org/ ClueCon http://www.cluecon.com/ Twitter: http://twitter.com/FreeSWITCH_wire AIM: anthm MSN:anthony_minessale@hotmail.com <MSN%3Aanthony_minessale@hotmail.com> GTALK/JABBER/PAYPAL:anthony.minessale@gmail.com<PAYPAL%3Aanthony.minessale@gmail.com> IRC: irc.freenode.net #freeswitch FreeSWITCH Developer Conference sip:888@conference.freeswitch.org <sip%3A888@conference.freeswitch.org> iax:guest@conference.freeswitch.org/888 googletalk:conf+888@conference.freeswitch.org<googletalk%3Aconf%2B888@conference.freeswitch.org> pstn:+19193869900
Hi Anthony it's Windows XP - there was no time change on the PC any time close to this event - or indeed for weeks since FreeSwitch was installed. I'll check, but I don't think the machine is even using SNTP. What does FreeSwitch define as a "profound jump in time" ? regards Dave (off to see the New Year in now !) ----- Original Message ----- From: Anthony Minessale To: freeswitch-users@lists.freeswitch.org Sent: Thursday, December 31, 2009 8:33 PM Subject: Re: [Freeswitch-users] "Reverse Clock Skew Detected" - what does itmean ? It means you have a profound jump in time like someone set the clock to an earlier time and it's recovering by re-syncing the clock. You can avoid this by using a monotonic clock which must not be possible on your system because it uses it by default. What OS is it? On Thu, Dec 31, 2009 at 2:22 PM, Dave Stevenson <stevendt@primrosebank.net> wrote: Hi Guys Happy New Year ! - 4 hours to midnight here - what am I doing looking at the console log ???? Anyway, all the best for 2010, and when someone gets a chance to look at this, could someone please help me understand what the following error message means ? I've seen it a few times before and not seen anything untoward. My "production" system is running 1.0.4 - reported as (14460) but it is somewhat later than that (15xxx). I plan on doing a new SVN build over the holiday, but don't expect this error to go away ? Message is along the lines . . . . date & time "[CRIT] switch_time.c:454 Reverse Clock Skew Detected!" regards Dave _______________________________________________ FreeSWITCH-users mailing list 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 -- Anthony Minessale II FreeSWITCH http://www.freeswitch.org/ ClueCon http://www.cluecon.com/ Twitter: http://twitter.com/FreeSWITCH_wire AIM: anthm MSN:anthony_minessale@hotmail.com GTALK/JABBER/PAYPAL:anthony.minessale@gmail.com IRC: irc.freenode.net #freeswitch FreeSWITCH Developer Conference sip:888@conference.freeswitch.org iax:guest@conference.freeswitch.org/888 googletalk:conf+888@conference.freeswitch.org pstn:+19193869900 ------------------------------------------------------------------------------ _______________________________________________ FreeSWITCH-users mailing list 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
Don't most modern windows operating systems automatically sync with time.windows.com or something like that? On Thu, Dec 31, 2009 at 5:02 PM, Dave Stevenson <stevendt@primrosebank.net>wrote:
Hi Anthony
it's Windows XP - there was no time change on the PC any time close to this event - or indeed for weeks since FreeSwitch was installed.
I'll check, but I don't think the machine is even using SNTP.
What does FreeSwitch define as a "profound jump in time" ?
regards Dave
(off to see the New Year in now !)
----- Original Message ----- *From:* Anthony Minessale <anthony.minessale@gmail.com> *To:* freeswitch-users@lists.freeswitch.org *Sent:* Thursday, December 31, 2009 8:33 PM *Subject:* Re: [Freeswitch-users] "Reverse Clock Skew Detected" - what does itmean ?
It means you have a profound jump in time like someone set the clock to an earlier time and it's recovering by re-syncing the clock. You can avoid this by using a monotonic clock which must not be possible on your system because it uses it by default.
What OS is it?
On Thu, Dec 31, 2009 at 2:22 PM, Dave Stevenson <stevendt@primrosebank.net
wrote:
Hi Guys
Happy New Year !
- 4 hours to midnight here - what am I doing looking at the console log ????
Anyway, all the best for 2010, and when someone gets a chance to look at this, could someone please help me understand what the following error message means ?
I've seen it a few times before and not seen anything untoward. My "production" system is running 1.0.4 - reported as (14460) but it is somewhat later than that (15xxx). I plan on doing a new SVN build over the holiday, but don't expect this error to go away ?
Message is along the lines . . . .
date & time "[CRIT] switch_time.c:454 Reverse Clock Skew Detected!"
regards Dave
_______________________________________________ FreeSWITCH-users mailing list 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
-- Anthony Minessale II
FreeSWITCH http://www.freeswitch.org/ ClueCon http://www.cluecon.com/ Twitter: http://twitter.com/FreeSWITCH_wire
AIM: anthm MSN:anthony_minessale@hotmail.com <MSN%3Aanthony_minessale@hotmail.com> GTALK/JABBER/PAYPAL:anthony.minessale@gmail.com<PAYPAL%3Aanthony.minessale@gmail.com> IRC: irc.freenode.net #freeswitch
FreeSWITCH Developer Conference sip:888@conference.freeswitch.org <sip%3A888@conference.freeswitch.org> iax:guest@conference.freeswitch.org/888 googletalk:conf+888@conference.freeswitch.org<googletalk%3Aconf%2B888@conference.freeswitch.org> pstn:+19193869900
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-- -Rupa
participants (3)
-
Anthony Minessale
-
Dave Stevenson
-
Rupa Schomaker