hg: hsx/hsx16/baseline: 6909480: Disable Escape Analysis in jdk6u18

[Ben Evans]

Osvaldo Doederlein <opinali at gmail.com> wrote on 11/12/2009 15:50:29:

> I support Ben's request - this wouldn't be the first time that 
> unstable, beta-quality features are backported to production JDKs. I
> remember the G1 backport to JDK 6u14 - I've tested it, and found it 
> very far from adequate for production use; confirmed by the large 
> number of G1 changes (not only fixes) that followed in further JDK7 
> builds. Still it was available (jut not enabled by default) in a 
> production JDK, which is good so interested developers like me could
> test it. 

Agreed, but I have to say that I do understand the point of view that 
things should be released when ready and not before.

I also want to take this opportunity to thank the hotspot engineers - the
trend of continual incremental performance improvements in hotspot 
releases
has certainly not gone unnoticed here, and is greatly appreciated.

> btw I have high hopes that 6u18's G1 will be 
> the first I can put in production.)

A word of caution: I was still able to semi-reliably trigger segfaults 
in a 6u18 beta with G1 during my last test cycle of it a month or so ago.

When 6u18 goes gold I'll rerun the tests and see if they still persist 
(and
let the group know the results).

Thanks,

Ben
-- 
Ben Evans
eFX Algorithmic Trading
Deutsche Bank, London
Office: +44 (0)20 7541 3953



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