Two things:
1. There are cases where one needs 64-bit, even for a desktop
application (think engineering apps).
* Embed a browser in one of these and you suddenly /really
/want a 64-bit Java Plug-In.
2. The size of the impact of 64-bit pointers has been worked around
by other JVM vendors.
* While I understand Sun's stance here, the 32 vs. 64-bit
tradeoffs are most severe for the Sun JVMs right now to the
best of my knowledge.
--
Jess Holle
Joshua Marinacci wrote:
> Absolutely. And for many programs this is awesome. But for many
> others, such as your typical browser or desktop based app that spends
> 99% of it's time waiting on user input, it's overkill. I don't want
> to dis 64bit computing. I just want to explain that, like any
> engineering decision, it involves tradeoffs. BTW, I believe I heard
> that a 64bit Java plugin will be coming in one of the next few update
> releases, which means you could make an applet that accesses more than
> 4GB of memory. I wonder what interesting things you could do with
> that. I'll leave it as an exercise to the reader. :)
>
> - J
>
>
> On Nov 16, 2008, at 8:57 PM, Casper Bang wrote:
>
>
>> Yeah but memory is dirt cheap and it's now almost a decade ago 64bit
>> x86 CPU's were introduced. The beauty of 64bit is that many operations
>> which had to be broken up in composites on 32bit (i.e. on long and
>> double) can now be done in one go by the JVM. This has performance
>> impacts but probably more importantly, it means operations on these
>> are atomic and thus thread safe - not having to spread locking or
>> volatile directives around ones code or be an expert on the Java
>> Memory Model, could be seen as a desirable trait.
>>
>> /Casper
>>
>> On Nov 15, 5:19 pm, Joshua Marinacci <[EMAIL PROTECTED]> wrote:
>>
>>> Keep in mind that going 64bit means many memory structures double in
>>> size. 64bit is great for certain applications that really need to
>>> access more than 4GB of memory, but for most applications
>>> (particularly desktop apps) it's overkill that wastes memory.
>>>
>>> - J
>>>
>>> On Nov 14, 2008, at 11:53 PM, Alexander Snaps wrote:
>>>
>>>
>>>> Todd,
>>>> Not sure this might actually help you, yet I've been using IntelliJ
>>>> within a
>>>> 64bit linux environment for quite some time.
>>>> I had to to increase the maximum permgen size quite a bit (around
>>>> 50%) to
>>>> have it to be happy first. After that I never had problems anymore.
>>>> It used
>>>> to be a Gentoo Linux on a Sun Ultra20 AMD Opteron box. It was my
>>>> main box
>>>> for a couple of years. Meanwhile I've switched to OS X and there I
>>>> only had
>>>> issue with IDEA8 on Java5, switchin to Java6 and increasing the max
>>>> permgen
>>>> again solved it too now, but that's another story.
>>>> Thought I'd share this...
>>>> Alex
>>>>
>>>> On Fri, Nov 14, 2008 at 9:51 PM, ToddH <[EMAIL PROTECTED]>
>>>> wrote:
>>>>
>>>>> I finally bit the bullet and upgraded to 64 bit Linux. I'm
>>>>> currently
>>>>> using the 64 bit Sun JDK and get very occasional hangs in Intellij
>>>>> IDEA and Jetty. Anyhow, I wrote about my upgrade here with links to
>>>>> some resources for anyone else considering making the move to 64
>>>>> bit
>>>>> Linux:http://gabrito.com/post/moving-to-64-bit-ubuntu
>>>>>
>>>>> -Todd
>>>>> http://gabrito.com
>>>>>
>>>>> On Nov 10, 1:43 pm, ToddH <[EMAIL PROTECTED]> wrote:
>>>>>
>>>>>> I currently run 32bitLinux (Ubuntu Interpid Ibex) on my Core 2 duo
>>>>>> laptop which I mainly use for Java development. I'm about to re-
>>>>>> install my laptop to clean it up abitand switch to XFS and was
>>>>>> wondering if it's worth switching to64bitLinux? I've heard gripes
>>>>>> about the Java and Flush plugins for Firefox under64bitLinux.
>>>>>> Anyhow, my subjective question to the group is, is it worth going
>>>>>>
>>>>> to64bitLinux or will it just be one headache after another to get
>>>>>
>>>>>> things working?
>>>>>>
>>>>>> Thanks,
>>>>>> Toddhttp://gabrito.com
>>>>>>
>>>> --
>>>> Alexander Snaps <[EMAIL PROTECTED]>
>>>> http://www.jroller.com/page/greenhorn
>>>> http://www.linkedin.com/in/alexandersnaps
>>>>
>
>
> >
>
>
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