TImestamps

[Vitaly Davidovich]

You have multiple gc threads doing young gen collections - the user time is
their cumulative time, but since they run in parallel wall time is less.

Sent from my phone
On Jun 27, 2012 7:06 PM, "Kobe Bryant" <kbbryant61 at gmail.com> wrote:

> I am not follow timestamps printed in GC log of Oracle JDK 1.6.
> Looking at
>
>    [PSYoungGen: 699458K->22193K(743680K)] 886054K->233354K(3039488K),
> 0.0437840 secs]
>    [Times: user=0.29 sys=0.01, real=0.04 secs]
>
> The user space time is 0.29seconds, while the wall clock time us only
> 0.04s.
> How can this be. should not wall clock time ("real") include time spent in
> user space
> ("user") and in the operating system ("sys").
>
> thanking you,
>
> /kobe
>
>
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