i think those issues are being resolved i've ran into this blog entry a while back:
http://blog.juma.me.uk/2008/10/14/32-bit-or-64-bit-jvm-how-about-a-hybrid/ On Sun, Nov 16, 2008 at 6:09 PM, Jess Holle <[EMAIL PROTECTED]> wrote: > Two things: > > 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. > > 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 > > > > > > > > -- []'s Marcelo Takeshi Fukushima --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "The Java Posse" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/javaposse?hl=en -~----------~----~----~----~------~----~------~--~---
