On 7/10/06, David Corbin <[EMAIL PROTECTED]> wrote:
Yeah, I'm bouncing back and forth between C and Java a lot the past week...my nomenclature shows it.
If not for hotspot, I'd say "absolutely". However hotspot is the great unknown. In some cases it may actually be optimizing ArrayList use down to very snappy array operations, and the extra overhead mostly goes away. In others, it may not. We've seen it doing some fairly impressive optimization, but it's hard to know whether our changes will help it or hurt it.
On Monday 10 July 2006 13:21, Charles O Nutter wrote:
> - Multiple transient collections allocated for every method hit
Allocate? yikes. That's odd sounding.
Yeah, I'm bouncing back and forth between C and Java a lot the past week...my nomenclature shows it.
> - Lots of collection overhead
Should some collections be arrays?
\
If not for hotspot, I'd say "absolutely". However hotspot is the great unknown. In some cases it may actually be optimizing ArrayList use down to very snappy array operations, and the extra overhead mostly goes away. In others, it may not. We've seen it doing some fairly impressive optimization, but it's hard to know whether our changes will help it or hurt it.
Regardless, however, we're creating too many collections and too many objects per method call. We're improving though.
--
Charles Oliver Nutter @ headius.blogspot.com
JRuby Developer @ www.jruby.org
Application Architect @ www.ventera.com
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