RFR(S): 7190666: G1: assert(_unused == 0) failed: Inconsistency in PLAB stats

[John Cuthbertson]

Hi Thomas.

The CR is 7194633. It should be available externally by the time you 
read this.

Regards,

JohnC

On 08/28/12 01:37, Thomas Schatzl wrote:
> Hi,
>
> On Mon, 2012-08-27 at 17:36 -0700, John Cuthbertson wrote:
>   
>> Hi Everyone,
>>
>> Can I have a couple of volunteers review the changes for this CR? The 
>> webrev can be found at: http://cr.openjdk.java.net/~johnc/7190666/webrev.0/
>>
>>
>> Note while testing this I ran into some assertion and guarantee failures 
>> from G1's block offset table. I've only seen and been able (so far) to 
>> reproduce these failures on a single machine in the jprt pool. I will be 
>> submitting a new CR for these failures. I do not believe that the 
>> failures are related to this fix (or the change that enabled resize-able 
>> PLABS) as I've been able to reproduce the failures with disabling 
>> ResizePLAB and setting OldPLABSize=8k, 16k, and 32k.
>>     
>
> Could you describe the failure/assertion and possibly any circumstances
> it occurs? I've run into some card table issues some time ago too.
> (or the CR to see the description)
>
> Maybe, coincidently, they're the same.
>
> Thomas
>
>
>   

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mail.openjdk.org/pipermail/hotspot-gc-dev/attachments/20120828/4095021d/attachment.htm>