Ubuntu 64bit? Page 1 / 2

darkstar09, Aug 1, 11:00pm
Ubuntu 64bit? Is it worth it? What problems are there with software etc?

flewy, Aug 1, 11:05pm

little_egypt, Aug 1, 11:09pm
Totally worth it the ability to address over 4G ram, possibly a slight performance improvement, and no problems with software -at all-. 64bit ubuntu still includes 32bit libraries so it can still run 32bit code where necessary.

darkstar09, Aug 1, 11:20pm
Ok sweet il install it now. Great read here, on 32bit vs 64 bit OS, windows vista, windows 7 and ubuntu.

cybertao, Aug 1, 11:21pm
I don't think their would be any slight performance increase in the code. Unless you are using math heavy applications that take advantage of 64-bit. The address sizes are doubled, so compiled code works out to be about 50% larger. That's more storage space, more data to load off the harddrive, more data to store in RAM that the CPU gets to via the bus(working at the same speed), and less usable code that can fit on the CPU's cache. If anything, 64-bit is slightly slower unless you *need* 64-bit and *need* more than 4GB of address space. Minor points either way, I use 32-bit because I don't need anything 64-bit offers.

little_egypt, Aug 1, 11:39pm
The difference is really small but 64bit does have a slight (5-10%) advantage for most things. If you're doing web/email/WP you'll never see it. If you're ripping CDs and DVDs and doing video editing you'll probably still never see it, but it will actually be just a tiny bit faster ;) You'll get a couple more FPS in games too.

intrade, Aug 1, 11:39pm
(_!_) Host/Kernel/OS "Kanotix64Lenny" running Linux 2.6.30-10-generic x86_64 [ Kanotix Excalibur 20090611-00:27 ]
CPU Info (1) Intel Core2 6300 @ clocked at [ 1866.510 MHz ]
(2) Intel Core2 6300 @ clocked at [ 1866.510 MHz ]
Videocard nVidia NV44 [GeForce 7100 GS] X.Org 1.4.2 [ 1440x900 @60hz ]
Network cards Marvell 88E8001 Gigabit Ethernet Controller, at port: e800
Marvell 88E8056 PCI-E Gigabit Ethernet Controller, at port: c800
Techsan Electronics Co B2C2 FlexCopII DVB chip / Technisat SkyStar2 DVB card, at port: ec00
Processes 143 | Uptime 2days | Memory 922.3/3924.5MB | HDD Generic IC1210 MS,Generic IC1210 MMC/SD,Generic IC1210 SM,ATA ST3500320AS,ATA ST3160811AS,Generic IC1210 CF Size 660GB (15%used) | GLX Renderer GeForce 7100 GS/PCI/SSE2 | GLX Version 2.1.2 NVIDIA 190.18 | Client Shell | Infobash v2.67.1

cybertao, Aug 1, 11:41pm
Hi, intrade. Nice to see you're still around, wondered where you got to.

rua69, Aug 1, 11:43pm
"Ubuntu 9.04: 32-bit vs 64-bit benchmarks" fwiw: http://is.gd/1YeR8

little_egypt, Aug 1, 11:44pm
.. these numbers based on.. various published benchmarks (mostly phoronix)

cybertao, Aug 1, 11:53pm
As that article states"large chunks of Ubuntu are compiled for Intel 386 chips, for example. But x86-64 effectively provides a reset: x86-64 chips are guaranteed to include all of the i686 functionality plus SSE support, along with more processor registers, which means any program compiled for 64-bit is guaranteed to be optimised for your chip." That's a fair and true statement, when dealing with binaries from the repository. I compile WINE, Pov-Ray, and mplayer/mencoder from source with optimisation flags for my system. A better comparison would have been compiling 32-bit binaries with optimizations such as -march=i686 for comparison.

little_egypt, Aug 1, 11:59pm
Good point cyberthe comparison is really "i386" vs. "X86_64" .. It's be interesting to see a true i686 vs x86_64 benchmark. But then there isn't an i686 Ubuntu so it's not really useful. You have to go with the choices you're given.

cybertao, Aug 2, 12:10am
From my experince with linuxfromscratch system stuff like glibc *hate* anything other than the standard flags. My attempts to optimize failed miserably, I couldn't even get glibc to compile for i686(I was building to run on a PII) instead of i486. Someone recently told me(so it's hearsay) that their is no point or performance increase to be gained anyway. I wonder how/if other distributions compile the base system for anything other than i486.

cybertao, Aug 2, 12:13am
My 32-bit Debian tells me that gcc is hosted and targeted for 'i486-linux-gnu'. Anyone running a 64-bit distro care to run 'gcc -v'?

darkstar09, Aug 2, 12:43am
Ok I got flash working, but I cant get ANY sound. at all. Has anyone got some helpful instructions that actually work?

cybertao, Aug 2, 12:45am
What's your hardware? .

darkstar09, Aug 2, 12:47am
Laptop is HP Pavilion DV6 - 1204AX how do I check what soundcard I have?

cybertao, Aug 2, 12:48am
I'm about to google itbut if you run 'lspci' from the command line, it will tell you what hardware is on the PCI bus.

darkstar09, Aug 2, 12:50am
This look right? Audio device: ATI Technologies Inc SBx00 Azalia (Intel HDA)

darkstar09, Aug 2, 12:50am
Or this? 01:00.1 Audio device: ATI Technologies Inc R700 Audio Device [Radeon HD 4000 Series]

cybertao, Aug 2, 12:59am
The first one (Azalia) is your soundcard. .

darkstar09, Aug 2, 1:01am
Ok any suggestions? .

wickedtrader, Aug 2, 1:02am
Open up a terminal and run sudo alsaconf make sure you have all programs that use sound closed

darkstar09, Aug 2, 1:04am
Sorry it keeps saying not found will this work http://tinyurl.com/mtbbcx

cybertao, Aug 2, 1:09am
Ubuntuforums.org/showthread.php?t=1073090 I came across this thread...

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