interesting log entries

Kirk Pepperdine kirk at kodewerk.com
Fri Aug 1 18:12:24 UTC 2014


Hi Ramki,

I can send you examples of the age timestamp going backwards also ;-).

Regards,
Kirk

On Aug 1, 2014, at 7:03 PM, Srinivas Ramakrishna <ysr1729 at gmail.com> wrote:

> Hi Kirk,
> 
> Use the "jvm age" timestamp. That seems to be monotonically increasing, and doesn't present the issues with the date-stamp on account of NTP etc.
> 
> -- ramki
> 
> 
> On Fri, Aug 1, 2014 at 4:32 AM, Kirk Pepperdine <kirk at kodewerk.com> wrote:
> Hi,
> 
> I’ve run into this in a 1.7.0_40 with G1GC, with -XX:+PrintGCDetails, -XX:+PrintApplicationStoppedTime -XX:+PrintTenuringDistribution and it’s using the rolling logs feature.
> 
> The log is riddled with all kinds of different variants of date going backwards and time stamp going forward for backwards. My guess is NTP is involved here but there must also be some bug in the logging to allow things to travel in different directions and/or at different rates.
> 
> Regards,
> Kirk
> 
> 2014-06-16T01:41:02.478+0200: 7324.015: Total time for which application threads were stopped: 0.0009980 seconds
> 2014-06-16T01:41:02.479+0200: 7324.016: Application time: 0.0008090 seconds
> 2014-06-16T01:41:02.479+0200: 7324.016: Total time for which a1:40:22.957+0200: 7407.019: Application time: 0.0001020 seconds
> 2014-06-16T01:40:22.958+0200: 7407.020: Total time for which application threads were stopped: 0.0012800 seconds
> 
> 
> 

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