Re: uptime weirdness

[Martin Pala]

I'm not sure what system uptime in your case is - the attached monit status 
output contains following uptimes only:

1.) monit uptime: 49m  => monit was started 49 minutes ago (system itself may 
be running much longer - this uptime is updated whenever monit itself is 
(re)started)
2.) process 'BoomDataToMODBUS' uptime: 45m
3.) process 'DataRouter' uptime: 21h9m

=> if the system was started less then 21h9m ago at the point when monit status 
was taken, then the reported uptime of DataRouter process is wrong. With 
monit-5.0.3 it could happen because it's based on the pidfile's timestamp. The 
next monit release (5.2) fixes this problem. Monit-5.2 changelog excerpt:

--8<--
* Show real process uptime - formerly the presented uptime was based on 
create/modify
  timestamp of process' pidfile which provides invalid uptime if the pidfile is
  replaced and process keeps running with original PID (such as on apache 
reload).
  Thanks to Nima Chavooshi for report.
--8<--

Regards,
Martin



On Aug 12, 2010, at 2:01 AM, Gareth Pye wrote:

> I've just noticed that the uptime for one of my processes as reported by 
> monit is greater than the system time. Is this plausible?
> 
> The Monit daemon 5.0.3 uptime: 49m
> 
> Process 'BoomDataToMODBUS'
>  status                            running
>  monitoring status                 monitored
>  pid                               909
>  parent pid                        1
>  uptime                            45m
>  children                          0
>  memory kilobytes                  1880
>  memory kilobytes total            1880
>  memory percent                    1.4%
>  memory percent total              1.4%
>  cpu percent                       0.0%
>  cpu percent total                 0.0%
>  data collected                    Wed Aug 11 16:40:27 2010
> 
> Process 'DataRouter'
>  status                            running
>  monitoring status                 monitored
>  pid                               901
>  parent pid                        886
>  uptime                            21h 9m
>  monitoring status                 monitored
>  pid                               901
>  parent pid                        886
>  uptime                            21h 9m
>  children                          0
>  memory kilobytes                  3232
>  memory kilobytes total            3232
>  memory percent                    2.5%
>  memory percent total              2.5%
>  cpu percent                       0.0%
>  cpu percent total                 0.0%
>  data collected                    Wed Aug 11 16:40:27 2010
> 
> File 'user.config'
>  status                            accessible
>  monitoring status                 monitored
>  permission                        644
>  uid                               0
>  gid                               0
>  timestamp                         Wed Aug 11 15:50:56 2010
>  size                              1295 B
>  checksum                          deeaffe3f625e93f00aeead0a0a3abd5(MD5)
>  data collected                    Wed Aug 11 16:40:27 2010
> 
> Filesystem 'root'
>  status                            accessible
>  monitoring status                 monitored
>  permission                        755
>  uid                               0
>  gid                               0
>  filesystem flags                  0
>  block size                        4096 B
>  blocks total                      120169 [469.4 MB]
>  blocks free for non superuser     14286 [55.8 MB] [11.9%]
>  blocks free total                 14286 [55.8 MB] [11.9%]
>  inodes total                      134976
>  inodes free                       116759 [86.5%]
>  data collected                    Wed Aug 11 16:40:27 2010
> 
> System 'Test-Base'
>  status                            running
>  monitoring status                 monitored
>  load average                      [0.00] [0.00] [0.00]
>  cpu                               0.0%us 0.1%sy 0.0%wa
>  memory usage                      12892 kB [10.1%]
>  data collected                    Wed Aug 11 16:40:27 2010
> 
> -- 
> Gareth Pye
> Engineer
> GPSat Systems Australia
> address@hidden
> Ph: 03 9455 0041
> Fax: 03 9455 0042
> 
> 
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