G1: SoftReference, 0 refs, 31.0027203 secs

Simone Bordet simone.bordet at gmail.com
Mon Jul 27 13:55:29 UTC 2015


Hi,

On Wed, Jul 22, 2015 at 7:36 PM, Jon Masamitsu <jon.masamitsu at oracle.com> wrote:
> I noted that the entries for these times all have short user times and
> long real times.
>
>  [Times: user=3.63 sys=0.00, real=23.22 secs]
>  [Times: user=1.54 sys=0.08, real=31.41 secs]
>  [Times: user=2.68 sys=0.79, real=29.95 secs
>
> I see that you don't expect other processes to be
> interfering (no busy disk I/O or swapping as you say below)
> but maybe something else is going on in the system
> that is showing up as the SoftRef processing time.
> I don't know why it would always show up as SoftRef
> time though Kim suggests that it might be incorrect
> attribution.  This happens on multiple systems?

There is only one system for now.
We are also looking more closely at disk I/O and THP. If something
pops up, I'll keep this list informed.

Thanks !

-- 
Simone Bordet
http://bordet.blogspot.com
---
Finally, no matter how good the architecture and design are,
to deliver bug-free software with optimal performance and reliability,
the implementation technique must be flawless.   Victoria Livschitz


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