[ltp] How much performance improvement going from 32-bit to 64-bit linux?

[Rooslan S. Khayrov]

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I've recently switched to 64-bit (Ubuntu 9.04) on my desktop. No
noticeable performance improvements, no incompatibility issues, but
memory usage is noticeably higher. The same set of applications that
used to fit into 1 GB of RAM on the old 32-bit system now uses 1.2=E2=80=93=
1.5
GB of memory. (Anyway, with 4 GB total... who cares. It's mostly used
for disk cache.)
Every piece of free software I am using works fine on 64-bit system.
Limited amount of proprietary software works too: Adobe Flash, Skype
(with 32-bit compatibility environment, but properly packaged *amd64.deb
is available), NVIDIA graphics drivers, VirtualBox.
I don't think it is worth it for most users, but it doesn't hurt too. As
a software developer I can see extra coolness in 64-bit environment.

> The same for me. I noticed NO improvement on performance. However I
> No Flash,

Adobe Flash 10 alpha for 64-bit Linux works just fine for me. I've
experienced no trouble with it so far.

> no Firefox,=20

Huh?

> having to run incompatible apps in chroot
> jails, automatic system updates which every time need some attention
> because you always need to manually tweak something etc. Just imagine
> having nVidia or ATI drivers and having to recompile and re-re
> everything every time there's a tiny update to Xorg or some other
> related component.

I just don't get how it differs from 32-bit.

--=20
Best regards,
Rooslan


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