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Old 07-16-2008, 06:07 AM   #1
Condemn
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processor selection - Slackware 12.1 - Kernel 2.6.5


Hi,

Tried searching for this but i couldn't see anything so apologies if this has already been answered.

Anywho, installed slackware 12.1 last night, built a new kernel as the huge one seemed to be really, really slow. As i was going through the options for the processor i noticed my processor wasn't listed (AMD Sempron 3000+) so i clicked on AMD Athlon/Duron(K7 iirc) and selected most things as modules.

After compiling it and rebooting to the new kernel it worked 2nd time round (yeah, i configured the filesystms as a module the first time *cough* ;p) but it still seemed pretty slow. I've got 1gb ram in there with the processor and a fairly fast HD (80gb WD IDE running ext3 FS) so was expecting a little bit more speed.

Basically, is there a different option i should be choosing for the processor?? since sempron isn't listed i thought going for the closest would be best, but am probably wrong about that. Also, i'm assuming that choosing modules for most kernel things i don't use is a good idea as they can be added later if needed, but does this slow the kernel down much??

Lastly, when i first set up linux, i set up a 5gb swap file, is this gonna be too big and should i have set up something more like 2-3gb?? i'm asking as i'll probably be adding some more memory to the PC soon as i should be getting some coming my way for free, so thought i'd pre-empt this.

Thanks for reading, btw
 
Old 07-17-2008, 12:30 AM   #2
shrey.l
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Hi,

Quote:
Also, i'm assuming that choosing modules for most kernel things i don't use is a good idea as they can be added later if needed, but does this slow the kernel down much??
Nope, kernel modules, once inserted, are as good a being compiled within the kernel. Theoretically , there should not be any difference of speed noted. Infact, modules simply add the code section (not literally) and hence are not overheads.

Quote:
Lastly, when i first set up linux, i set up a 5gb swap file, is this gonna be too big and should i have set up something more like 2-3gb?? i'm asking as i'll probably be adding some more memory to the PC soon as i should be getting some coming my way for free, so thought i'd pre-empt this.
I am not sure what others do, but generally I have about 1.5 times of available RAM as the size of the swap space. Swap space simply acts like a working buffer for you (thus increasing the effective size of RAM). By making it larger, there is no overhead as such, but yes, it certainly eats your hard disk space. Well, I have no proof to show this is right - just read it somewhere if I recall correctly.

As for the processor (Sempron), I don't know much about this - but probably this link might help: http://www.linuxquestions.org/questi...empron-332096/

Feel free to correct me if I am wrong.
--
Shrey
 
Old 07-17-2008, 09:36 AM   #3
TSquaredF
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Tweaking the kernel can be an interesting exercise, but I haven't found that it makes a noticeable difference in the speed of the machine. I have had a kernel so customized that it would only run on one computer. However, I have found that using the generic kernel is not noticeably slower & is much more convenient in being able to copy the kernel & modules from one machine to another. I added both the nvidia & ati proprietary drivers to this kernel & have copied & am using the boot partition to all other computers on my network. That makes backing up & restoring the boot partition fairly easy.
Regards,
Bill
 
Old 07-17-2008, 10:54 AM   #4
brianL
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I think Semprons are classed as Athlon XPs. It cropped up in a thread a while ago about src2pkg.
 
Old 07-17-2008, 02:43 PM   #5
the3dfxdude
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Some Semprons are 64-bit.
 
Old 07-17-2008, 03:06 PM   #6
dive
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If you are thinking of using hibernation or suspend to disk then you will probably want your swap as big as your RAM at least.
 
  


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