Bug 165640

Summary:	System DateTime Problem
Product:	Gentoo Linux	Reporter:	Roberto Spadim <roberto>
Component:	[OLD] Core system	Assignee:	Gentoo Linux bug wranglers <bug-wranglers>
Status:	RESOLVED NEEDINFO
Severity:	major
Priority:	High
Version:	unspecified
Hardware:	AMD64
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---

Description Roberto Spadim 2007-02-06 15:52:08 UTC

i have a new pentium D 820 (dual core), i'm using amd64 since it's 64bits,
i don't know why my datetime is crazy, changing 2 seconds in past and to seconds in future again

Reproducible: Always

Steps to Reproduce:
1.check date and time values from system
2.check time from hardware clock
3.i don't know why but uptime is ok, if i check uptime it only add 

Actual Results:  
[root@spadim kernel]# date
Ter Fev  6 13:44:58 BRST 2007
[root@spadim kernel]# date
Ter Fev  6 13:44:56 BRST 2007 <-- time get back 2 seconds!
[root@spadim kernel]# date
Ter Fev  6 13:44:59 BRST 2007 <-- time continue ok
[root@spadim kernel]# date
Ter Fev  6 13:44:57 BRST 2007 <-- time get back 2 seconds!
[root@spadim kernel]# date
Ter Fev  6 13:45:00 BRST 2007 <-- time conttinue ok!

my hw clock is ok see:
[root@spadim kernel]# hwclock
Ter 06 Fev 2007 13:46:52 BRST  -3.000384 segundos 
[root@spadim kernel]# hwclock
Ter 06 Fev 2007 13:46:53 BRST  -0.174015 segundos
[root@spadim kernel]# hwclock
Ter 06 Fev 2007 13:46:54 BRST  -0.321278 segundos
[root@spadim kernel]# hwclock
Ter 06 Fev 2007 13:46:55 BRST  -0.366134 segundos
[root@spadim kernel]# hwclock
Ter 06 Fev 2007 13:46:56 BRST  -0.352971 segundos
Ter 06 Fev 2007 13:47:12 BRST  -0.292030 segundos
[root@spadim kernel]#
[root@spadim kernel]# hwclock
Ter 06 Fev 2007 13:47:16 BRST  -3.220447 segundos <- system is 3 seconds slower?
Linux version 2.6.19
gcc version 4.1.2 20061215



Expected Results:  
[root@spadim kernel]# date
Ter Fev  6 13:44:58 BRST 2007
[root@spadim kernel]# date
Ter Fev  6 13:44:58 BRST 2007 <-- should continue working ok
[root@spadim kernel]# date
Ter Fev  6 13:44:59 BRST 2007 <-- time continue ok
[root@spadim kernel]# date
Ter Fev  6 13:44:59 BRST 2007 <-- should continue working ok
[root@spadim kernel]# date
Ter Fev  6 13:45:00 BRST 2007 <-- time conttinue ok!

my hw clock is ok see:
[root@spadim kernel]# hwclock
Ter 06 Fev 2007 13:46:52 BRST  -3.000384 segundos  <- should be 0 seconds or <1 second
[root@spadim kernel]# hwclock
Ter 06 Fev 2007 13:46:53 BRST  -0.174015 segundos
[root@spadim kernel]# hwclock
Ter 06 Fev 2007 13:46:54 BRST  -0.321278 segundos
[root@spadim kernel]# hwclock
Ter 06 Fev 2007 13:46:55 BRST  -0.366134 segundos
[root@spadim kernel]# hwclock
Ter 06 Fev 2007 13:46:56 BRST  -0.352971 segundos
Ter 06 Fev 2007 13:47:12 BRST  -0.292030 segundos
[root@spadim kernel]#
[root@spadim kernel]# hwclock
Ter 06 Fev 2007 13:47:16 BRST  -3.220447 segundos <- system is 3 seconds slower?
Linux version 2.6.19
gcc version 4.1.2 20061215



i don't know if it's a problem with cpu, since it's dual core i don't know if it can't hangle system time ok, since i have time based programs, i can't run any program, they get time values with (-1.233 seconds in past and stop working)

Comment 1 Jakub Moc (RETIRED) gentoo-dev

2007-02-06 15:57:30 UTC

At least post your kernel version.

Comment 2 Roberto Spadim 2007-02-06 16:15:16 UTC

Linux version 2.6.19
gcc version 4.1.2 20061215

/proc/uptime have bug too! just uptime command don't

[root@spadim proc]# cat /proc/uptime
153504.13 127890.61
[root@spadim proc]# cat /proc/uptime
153502.11 127891.04
[root@spadim proc]# cat /proc/uptime
153504.98 127891.42
[root@spadim proc]# cat /proc/uptime
153502.94 127891.84

Comment 3 Jakub Moc (RETIRED) gentoo-dev

2007-02-06 16:21:09 UTC

(In reply to comment #2)
> Linux version 2.6.19

Sigh; post emerge --info instead, not getting anywhere.