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SubjectRe: Kernel 4.7rc3 - Performance drop 30-40% for SPECjbb2005 and SPECjvm2008 benchmarks against 4.6 kernel
On Wed, Jun 22, 2016 at 09:49:41AM +0200, Peter Zijlstra wrote:
> On Wed, Jun 22, 2016 at 09:16:01AM +0200, Peter Zijlstra wrote:
> > WTF a benchmark needs that crap is beyond me, but whatever, I have
> > numbers.
>
> Oh, shaft me harder, its XML shite :/ How is a sane person ever going to
> get numbers out.
>
> I'm >.< close to giving up on this site and declaring the thing
> -EDONTCARE.

OK, done.. have a look at this:


/tmp/SPECjvm2008/compiler.compiler/compiler/src/share/classes/javax/lang/model/element/Name.java:54: cannot access java.lang.CharSequence
bad class file: spec.benchmarks.compiler.SpecFileManager$CachedFileObject@1c06fce6
bad constant pool tag: 18 at 10
Please remove or make sure it appears in the correct subdirectory of the classpath.
public interface Name extends CharSequence {
^
ERROR: compiler exit code: 1

Warmup (120s) begins: Wed Jun 22 09:45:33 CEST 2016
/tmp/SPECjvm2008/compiler.compiler/compiler/src/share/classes/javax/lang/model/element/Name.java:54: cannot access java.lang.CharSequence
bad class file: spec.benchmarks.compiler.SpecFileManager$CachedFileObject@1c06fce6
bad constant pool tag: 18 at 10
Please remove or make sure it appears in the correct subdirectory of the classpath.
public interface Name extends CharSequence {
^
/tmp/SPECjvm2008/compiler.compiler/compiler/src/share/classes/javax/lang/model/element/Name.java:54: cannot access java.lang.CharSequence
bad class file: spec.benchmarks.compiler.SpecFileManager$CachedFileObject@1c06fce6
bad constant pool tag: 18 at 10
Please remove or make sure it appears in the correct subdirectory of the classpath.



Clearly this stuff just isn't made to be used.


/me goes do something useful.

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