RFR - 6526682: JConsole shows negative CPU Usage

[Staffan Larsen]

I agree with Erik that this will just be hiding another problem (and making that problem harder to find).

/Staffan

On 1 jun 2013, at 10:06, Erik Gahlin <erik.gahlin at oracle.com> wrote:

> Nils, do you know why you get a negative number? 
> 
> As I remember it, the MBean returns -1 if the value is not available on the platform. I think there should be a message that tells the user that
> 
> Now it's just a matter of time before somebody files a bug that they got 0% instead of the CPU load they actually have on their machine. The negative value was at least a hint to the user that the value can't be trusted
> 
> Erik
> 
> 
> On 31 maj 2013, at 13:59, Nils Loodin <nils.loodin at oracle.com> wrote:
> 
>> Simple fix to not show negative CPU usage in JConsole:
>> 
>> http://cr.openjdk.java.net/~nloodin/6526682/webrev.00/
>> 
>> Regards,
>> Nils Loodin