So...
How do you develop javascript apps on Chrome without firebug? I am just
wondering because I could really use the extra performance of Chrome's V8
over what I am getting (for whatever reason) with Firefox. But, you know...
Firebug or some way to get js errors, at a minimum is essential for
practical reasons.
Matthew
On Wed, Jan 27, 2010 at 11:27 AM, darrel karisch <[email protected]> wrote:
> I have been working on a POC that centers on Javascript and I chose
> chromium as the driver and development base.
>
> in this POC many small scripts may be executed in different contexts
> and/or the same context multiple times depending on input data
> (scripts may invoke other scripts indirectly through object methods).
> The same script set may be reexecuted multiple times indirectly
> depending on user input cues.
>
> In my initial implementation I reuse the object from
> ScriptData::PreCompile to facilitate faster compilation when
> required. This design functions and performs quite well.
>
> I have updated my code base from chromium version 21525 of mid-July to
> version 35622 to take advantage of the "new context-independent script
> objects that can be run in any number of contexts" as described in
> Christian Plesner's announcement from August 17 New v8 API functions
>
> http://groups.google.com/group/v8-users/index/browse_frm/thread/d31782722fe19f2c?_done=%2Fgroup%2Fv8-users%2Fbrowse_frm%2Fthread%2Fd31782722fe19f2c%3Fpli%3D1%26&pli=1
> .
>
> With this new functionality in place I refactored the codebase
> discontinuing use of ScriptData and instead reusing Scripts as
> described in the announcement.
>
> I notice that version 35622 executes significantly slower than the
> prior version. I'm profiling a slow degradation in performance with
> each passing reexecution of the same code. i.e. reexecuting the same
> Script instance set in memory. correspondingly, the executable memory
> usage exhibits a slow continuous increase. upon reloading the JS
> source the memory usage resets and the issue repeats.
>
> using my prior code base that creates new Scripts with ScriptData with
> each invocation, I am experiencing the same slow degradation in
> performance with the newer release.
>
> my version 21525 implementation does not exhibit this behavior.
>
> has anyone else noticed this? can you speculate on the source of this
> behavior? please tell me what more info you may need to make an
> assessment.
>
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