The question about lambda's performance

Brian Goetz brian.goetz at
Mon Feb 20 20:31:40 PST 2012

We post docs here as they become available.  Watch this space!

On 2/20/2012 9:57 PM, Îâè±Ô¨ wrote:
> Thx for your reply , are there some blogs or doces about the plan and so 
> on ?
> 2012/2/21 Brian Goetz <brian.goetz at 
> <mailto:brian.goetz at>>
>     Thanks for trying out the implementation!
>     We are still very much in the prototype stage of the development of
>     the implementation. Currently the compiler generates inner classes,
>     but that is definitely a temporary strategy. Our focus has been
>     exclusively on delivering something that works, so people can try it
>     out. Many shortcuts have been taken to get something in people's
>     hands as early as possible, so that we could get feedback on the
>     usability of the features.
>     Any conclusions drawn from performance measurements at this time
>     would definitely be premature.
>     On 2/20/2012 8:33 PM, Îâè±Ô¨ wrote:
>         Hi, I'm from china and take care of lamdba project these days.
>         I'm sorry for last mail is not whole... so I send again.
>         I read the doc of
>         <>
>         very
>         carefully, the lambda spec is so simple, but there is a question
>         about
>         performance.
>         In section 1 background , we get the information that the "callback
>         interface" nearly can not increase the performance by multicore
>         cpu or
>         parallel-programming. But there is no info in the follow part
>         about the
>         target of lambda. Is there some improvement of JVM about this?
>         I test the "javap -c" to the classes , there are no "invokedynamic"
>         created, and test the cost time of inner classes and lambda ,it
>         seems
>         lambda codes cost a little more time.
>         Thx resd my question! If there are any unclear because my pool
>         English
>         please note me!
>         B&R

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