Review Request: Newer AMD Processor Prefetch Defaults

[Vladimir Kozlov]

Thank you, Tom

I put your changes into queue to push into hotspot-comp/hotspot.

Vladimir

Deneau, Tom wrote:
> Vladimir --
> 
> Yes, the hw prefetcher is more advanced.  In the future we may find a sw
> prefetch strategy that adds something to the hw prefetcher but for now we
> do not have one and we wanted to make sure our current best default gets in
> for the April JDK7 hotspot snapshot freeze.
> 
> On the topic of bug numbers, there will definitely be some other default
> flag changes (not related to prefetch).  Our plan was to submit each one
> functional area separately.
> 
> -- Tom
> 
> -----Original Message-----
> From: Vladimir Kozlov [mailto:vladimir.kozlov at oracle.com] 
> Sent: Wednesday, March 16, 2011 7:59 PM
> To: Deneau, Tom
> Cc: hotspot-compiler-dev at openjdk.java.net
> Subject: Re: Review Request: Newer AMD Processor Prefetch Defaults
> 
> Tom,
> 
> I created next bug and your changes looks good. So hw prefetches become smart 
> enough to replace sw prefetch?
> 
> 7028394: Newer AMD Processor Prefetch Defaults
> 
> Thanks,
> Vladimir
> 
> Deneau, Tom wrote:
>> Hi all,
>>
>> Please review this patch which changes a flag default for some
>> newer AMD processors.  The webrev is at
>>
>>   http://cr.openjdk.java.net/~tdeneau/bd-prefetch/webrev.01/
>>
>> This new default has shown improvement across many workloads.
>> I do not have a bug id for this.
>>
>> -- Tom Deneau, AMD
>>
>>
> 
>