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Old 04-09-2004, 07:13 AM   #1
MKS45
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Registered: Feb 2004
Location: Wirral, Merseyside, England
Distribution: Slackware 10 on old Compaq Presario; newish PC with SuSE 9.2 Pro dual-boot with XP
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boot parameters


I'm beginning to suspect that this distro is a bit too much for my ageing PC. However, I'd like to be sure I've done all I can to optimise setup & performance first!

One area I'm not too sure about is my choice of boot parameters.

The relevant line in /boot/grub/menu.lst reads:

kernel (hd0,0)/vmlinuz root=/dev/hda3 splash=silent ide=nodma apm=off acpi=off desktop hdb=ide-scsi hdblun=0 showopts

/dev/hdb is my CD device btw

I've been unable to find any documentation (tried SuSE Help Centre & Google) telling me exactly what these options mean - and whether there are any others which have been omitted which might be useful to me.
I've seen posts on here which mention advice from SuSE support to omit the "desktop" parameter for performance reasons, but no explanation of the significance of the parameter, or what it does, was given.

Can anyone assist me here? Would be nice to know exactly what I'm doing at boot time :-)
 
Old 04-09-2004, 08:07 AM   #2
leonscape
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ide=nodma, means no direct memory access ( will slow things down quite a bit ).

apm, and acpi are power management systems. desktop means that it expecting a desktop type system ( instead of a server ). hdblun is also a scsi setting ( I think ).
 
Old 04-09-2004, 10:12 AM   #3
MKS45
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Registered: Feb 2004
Location: Wirral, Merseyside, England
Distribution: Slackware 10 on old Compaq Presario; newish PC with SuSE 9.2 Pro dual-boot with XP
Posts: 15

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OK thanks for that - it's a start.

There are messages for /dev/hd[abc] when booting which appear some time after the filesystems have been fsck'ed, which indicate that "using_dma" is being set to 1 (on) - so I don't think "ide=nodma" is the cause of my performance problems.
 
  


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