On 9/26/05, Matt Randolph <[EMAIL PROTECTED]> wrote: > Mark Knecht wrote: > > > So, to check how this hardware platform works in a 32-bit mode I > >guess I need to do a complete second install on a separate part of the > >hard drive as an Athlon. That's a big job that I'm not anxious to do. > > > >Cheers, > >Mark > > > > > > > > If you're just trying to compare the performance of your software > between 32-bit and 64-bit kernels, you might try a distro that installs > more quickly. If I recall, you can install a complete 32-bit Debian > system in about half an hour using a Knoppix CD. Google `knoppix > "install to hard disk"` for the howto. I believe you can also get a > 64-bit Debian system just as quickly for comparison by following the > same procedure but using a Kanotix-64 CD instead. (You might just > compare against your existing 64-bit Gentoo system instead, but I don't > know how fair a fight would be between a hand-tuned Gentoo system and > one running a binary distro.) > > The only hitch I can think of is that some of your applications might > not be available as Debian binaries in both 32 and 64-bit versions. > Also, naturally, you won't have the ability to test your software with > the optimizations afforded by the USE flags you intend to use back here > in Gentoo-land. If you would be building your software from source > anyway, then this would not be an issue. > > That being said, I think this experiment would actually be pretty > academic for most users. Unless your software is, say, a very CPU > intensive scientific or multimedia application that was expertly ported > to 64-bit, it is my understanding that you're probably not going to see > a performance difference worth writing home about. I would encourage > anyone to comment if they know better as I would be delighted to learn > it was otherwise. > > - Matt > > -- > [email protected] mailing list > > Hi Matt, As I stated in the first email:
"Any disk activity seems to be the main cause of xruns on this machine." If I get xruns (a failure mode of Jack-Audio-Connection-Kit running on this hardware) then the machine is useless doing the sort of Linux audio work I want to do so this is the problem I'm trying to solve. That's my only goal. In my case I want to run Gentoo so I'm suspect of comparing any compiled distro with the results I'm getting on Gentoo's 64-bit kernel. I don't know what patches they've applied, etc., so I wouldn't know how to compare that. While it is a bunch of work, it might just be best to do a standard stage 3 Gentoo install on another section of the drive. This way I have a better comparison, and if it works as well as my other machines then at least I have a working platform until I can figure out what's causing the problem in the 64-bit environment. Thanks for your inputs. Cheers, Mark -- [email protected] mailing list
