G1 status in JDK1.6 Vs JDK1.7

[Bharath R]

Jesper,

Thanks for the clarification. I'm now running benchmarks against JDK7.


-Bharath



________________________________
 From: Jesper Wilhelmsson <jesper.wilhelmsson at oracle.com>
To: Bharath R <reachbach at yahoo.com> 
Cc: "hotspot-gc-use at openjdk.java.net" <hotspot-gc-use at openjdk.java.net> 
Sent: Thursday, February 7, 2013 5:51 AM
Subject: Re: G1 status in JDK1.6 Vs JDK1.7
 
Hi Bharath,

The first supported release of G1 was with 7u4. The 7u4 version came 
with significant improvements and I do not recommend doing performance 
evaluations with earlier versions.

If you decide to move to JDK 7 and try G1 please share your experiences.
/Jesper


On 4/2/13 8:26 AM, Bharath R wrote:
> Hi,
>
> Is the G1 GC 1.6 port on par with the 1.7 in terms of stability /
> quality? If that is true, I intend to begin experimenting with it in
> production and gradually roll it out across our deployment based on the
> outcome. On a related note, we intend to use G1 for an online system
> with a very low pause time requirement ( <10ms). The hardware is
> heterogeneous in terms of memory (ranges between 12G - 32G available to
> the application process) with comparable CPU configuration. CMS required
> considerable tuning to achieve acceptable results and I'm hoping G1
> would fare better without myraid config options or overrides.
> I'd like to know of comparisons / experience operating G1 in production
> under such conditions. Thanks in advance.
>
> -Bharath
>
> P.S: Using RTJ is not an option for us :)
>
>
>
>
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