Re: [dsdp-ercp-dev] Java 5 in devices

[Sebastian Mancke <s.mancke@xxxxxxxxx>]

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Gorkem Ercan schrieb:
> These numbers exactly indicate the problem that we are
> facing.Considering mainstream hardware configurations today any
> runtime that uses over 10 MB RAM does not get mainstream.
Well, we can treat this either as a problem or as a requirement ;-)

Do you think, that the cacao has the chance to become mainstream on
mobile phones, when startup speed and memory would be good?

- --Sebastian

> --
> Gorkem
> 
> On Fri, Jun 6, 2008 at 12:43, Sebastian Mancke <s.mancke@xxxxxxxxx> wrote:
> Hi Gorkem,
> 
> Gorkem Ercan schrieb:
>>>> Hey Sebastian,
>>>> Do you have any numbers what is the required hardware for having java
>>>> 5 on a device.. Any CPU or memory requierements.
> of course, this depends on the usage.
> 
> The storage size of the complete runtime: ~12 MB
> A small java process: ~15 MB RAM
> A bigger java process (SWT, some libraries, some images): ~30 MB RAM
> 
> On our Nokia n800 (TI OMAP 2420 @400 MHz) we have the following:
> Start up speed Hello World: 3 seconds
> Start up speed SWT Hello World: 10 seconds
> Once the code bytecode is compiled, it runs *very* fast.
> 
> Even on the early linux mobile devices (e.g. yopy or zaurus with SA-1110
> CPU @206 MHz) it is possible to run the the vms.
> 
> Currently our biggest problem is the start up speed. But we are hardly
> working on a JIT-cache for cacao to improve this.
> 
>>>> By the way, did you already start doing a port of cacao for S60?
> No. Just looked into it the APIs, somewhat. The Open C Layer should
> provide the most parts, we need: libc, libz, libpthread, libdl. But
> first we have to finish our JIT-cache. Currently jalimo fits our company
> needs, so the next extensions will be mostly driven by our personal
> interests ;-)
> 
> Regards,
>  Sebastian
> 
>>>> --
>>>> Gorkem
>>>>
>>>> On Fri, Jun 6, 2008 at 11:11 AM, Sebastian Mancke <s.mancke@xxxxxxxxx> wrote:
>>>> Hi,
>>>>
>>>> we are also able to run the most 1.5 applications: http://www.jalimo.org
>>>> My hope is also to get one of those vm's (e.g. cacao) to Symbian S60,
>>>> this year.
>>>>
>>>> Regards,
>>>>  Sebastian
>>>>
>>>>
>>>> Gaff, Doug schrieb:
>>>>>>> Hi guys,
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> I?m guessing you already know about this. Just thought I?d pass it on.
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> Doug
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> *From:* eclipse-incubator-e4-dev-bounces@xxxxxxxxxxx
>>>>>>> [mailto:eclipse-incubator-e4-dev-bounces@xxxxxxxxxxx] *On Behalf Of
>>>>>>> *Marcelo Paternostro
>>>>>>> *Sent:* Wednesday, June 04, 2008 1:33 PM
>>>>>>> *To:* E4 developer list
>>>>>>> *Subject:* [eclipse-incubator-e4-dev] FYI: Java 5 in devices
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> Hi,
>>>>>>>
>>>>>>> I've attended to a Sun event here in Toronto in which I've seen a Java 5
>>>>>>> application running in an iPhone. Obviously I've asked what was the JVM
>>>>>>> being used since JavaME is 1.4 based. The answer was
>>>>>>> http://jamvm.sourceforge.net/. So perhaps adopting Java 5 in e4 may not
>>>>>>> exclude folks that are currently developing for mobile devices.
>>>>>>> Certainly is not keeping Sun developers and projects to move to a newer
>>>>>>> level of the language ;-)
>>>>>>>
>>>>>>> Note for the curious ones: The "Java 5 application" is Grizzly
>>>>>>> (https://grizzly.dev.java.net/) and the presenter was the project's team
>>>>>>> leader, Jean François, a Sun Engineer.
>>>>>>>
>>>>>>> Best regards,
>>>>>>>
>>>>>>> Marcelo Paternostro
>>>>>>> IBM Toronto Lab
>>>>>>> 1-905-413-3942
>>>>>>> marcelop@xxxxxxxxxx
>>>>>>>
>>>>>>>
>>>>>>> ------------------------------------------------------------------------
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> dsdp-ercp-dev mailing list
>>>>>>> dsdp-ercp-dev@xxxxxxxxxxx
>>>>>>> https://dev.eclipse.org/mailman/listinfo/dsdp-ercp-dev
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