Re: Maximum uptime 497 days?
[Coming in late ...] > On Mon, Jun 28, 2004 at 05:19:10PM +0400, Maxim Konovalov wrote: > > On Mon, 28 Jun 2004, 12:39+0900, Rob wrote: > > > By accident I happen to come across this remarkable limit of > > > uptime registration for FreeBSD systems. After 497 days, the > > > timer jumps to zero again. > > > > > > 497 days is less than a 1.5 years ! > > > > > > Has this been fixed in newer versions of FreeBSD (stable and/or > > > current) ? Or is there a hardware limitation (CPU?) that does > > > not allow this? Most system management/statistical things are built around the MIB (Management Information Base) concept used by SNMP, etc. These call for time to be kept in 10,000ths of a second in a 32-bit unsigned counter. That register rolls over in about 497 days. (Later versions of the base MIB add 64-bit counters, but support isn't universal and software designs tend to prefer the original counters.) Mark Terribile __ Do you Yahoo!? New and Improved Yahoo! Mail - Send 10MB messages! http://promotions.yahoo.com/new_mail ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: Maximum uptime 497 days?
On Tue, Jun 29, 2004 at 12:40:53AM +0900, Rob wrote: > Michael W. Lucas wrote: > >Hi, > > > >This tickles something in the back of my memory. > > > >You aren't by chance talking about remote uptime detection, > >Netcraft-style, are you? > > > >IIRC, that rolls over to 0 at 497 days. But actual system uptime is > >unaffected. > > Yes, I read it first time on a Netcraft's webpage, then googled and found > other reports as well. So this 497 limitation is only for Netscaft's way > of measuring up-time? > > Rob. Yep. It's a counter that rolls over in the TCP stack. ==ml -- Michael Lucas [EMAIL PROTECTED], [EMAIL PROTECTED] "I'm sorry, but 'Social Darwinism' is no excuse for killing all of your co-workers." -- Ivan Brunetti http://www.BlackHelicopters.org/~mwlucas/ ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: Maximum uptime 497 days?
Michael W. Lucas wrote: Hi, This tickles something in the back of my memory. You aren't by chance talking about remote uptime detection, Netcraft-style, are you? IIRC, that rolls over to 0 at 497 days. But actual system uptime is unaffected. Yes, I read it first time on a Netcraft's webpage, then googled and found other reports as well. So this 497 limitation is only for Netscaft's way of measuring up-time? Rob. ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: Maximum uptime 497 days?
Rob wrote: Hi, By accident I happen to come across this remarkable limit of uptime registration for FreeBSD systems. After 497 days, the timer jumps to zero again. Not here.. 8:00AM up 1074 days, 11:58, 0 users, load averages: 0.57, 0.26, 0.10 That's on 2.1.0-RELEASE, BTW :) -Charlie ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: Maximum uptime 497 days?
Hi, This tickles something in the back of my memory. You aren't by chance talking about remote uptime detection, Netcraft-style, are you? IIRC, that rolls over to 0 at 497 days. But actual system uptime is unaffected. ==ml On Mon, Jun 28, 2004 at 12:39:30PM +0900, Rob wrote: > > Hi, > > By accident I happen to come across this remarkable limit of > uptime registration for FreeBSD systems. After 497 days, the > timer jumps to zero again. > > 497 days is less than a 1.5 years ! > > Has this been fixed in newer versions of FreeBSD (stable and/or > current) ? Or is there a hardware limitation (CPU?) that does > not allow this? > > Just wondering. > > Regards, > Rob. > > > ___ > [EMAIL PROTECTED] mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "[EMAIL PROTECTED]" -- Michael Lucas [EMAIL PROTECTED], [EMAIL PROTECTED] "I'm sorry, but 'Social Darwinism' is no excuse for killing all of your co-workers." -- Ivan Brunetti http://www.BlackHelicopters.org/~mwlucas/ ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: Maximum uptime 497 days?
On Mon, Jun 28, 2004 at 05:19:10PM +0400, Maxim Konovalov wrote: > On Mon, 28 Jun 2004, 12:39+0900, Rob wrote: > > By accident I happen to come across this remarkable limit of > > uptime registration for FreeBSD systems. After 497 days, the > > timer jumps to zero again. > > > > 497 days is less than a 1.5 years ! > > > > Has this been fixed in newer versions of FreeBSD (stable and/or > > current) ? Or is there a hardware limitation (CPU?) that does > > not allow this? > > > > Just wondering. > > $ uptime > 5:18ÐÐ up 498 days, 6:13, 5 users, load averages: 0.07, 0.03, 0.06 > $ uname -r > 4.4-RELEASE % uptime 7:25AM up 932 days, 3:48, 1 user, load averages: 0.47, 0.30, 0.23 % uname -r 4.4-STABLE % That said, I'd love to know what limit it was you (original poster) saw. Maybe something has crept in between 4.4 and now? -- Ken Smith - From there to here, from here to | [EMAIL PROTECTED] there, funny things are everywhere. | - Theodore Geisel | ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: Maximum uptime 497 days?
On Mon, 28 Jun 2004, 12:39+0900, Rob wrote: > > Hi, > > By accident I happen to come across this remarkable limit of > uptime registration for FreeBSD systems. After 497 days, the > timer jumps to zero again. > > 497 days is less than a 1.5 years ! > > Has this been fixed in newer versions of FreeBSD (stable and/or > current) ? Or is there a hardware limitation (CPU?) that does > not allow this? > > Just wondering. $ uptime 5:18пп up 498 days, 6:13, 5 users, load averages: 0.07, 0.03, 0.06 $ uname -r 4.4-RELEASE -- Maxim Konovalov___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Maximum uptime 497 days?
Hi, By accident I happen to come across this remarkable limit of uptime registration for FreeBSD systems. After 497 days, the timer jumps to zero again. 497 days is less than a 1.5 years ! Has this been fixed in newer versions of FreeBSD (stable and/or current) ? Or is there a hardware limitation (CPU?) that does not allow this? Just wondering. Regards, Rob. ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
