On Mon, Mar 19, 2001 at 02:10:06PM +1100, Sonam Chauhan wrote:
> Hello!
Yo!
> Here's one message my 2.2.16 kernel outputs at boot time:
> -------------
> raid5: MMX detected, trying high-speed MMX checksum routines
> pII_mmx : 1115.568 MB/sec
> p5_mmx : 1171.575 MB/sec
> 8regs : 860.679 MB/sec
> 32regs : 482.727 MB/sec
> using fastest function: p5_mmx (1171.575 MB/sec)
> -------------
> The 2.4.2 kernel I compiled generates no such message.
Looks like this is specific to a RAID device driver. That wouldn't have any
effect on overall system speed.
If you compiled the 2.4 kernel with the defaults, then SMP will be turned
on. You can try turning that off and recompiling. Also, on my Athlon
system, ACPI power management caused a huge slowdown. Try either disabling
power management in the config, or putting
append="acpi=no-idle"
in your lilo.conf.
> 2. Does Redhat makes specific patches to their distro kernels that aren't
> in the mainstream kernel.
Yes.
> Is it possible to apply those to the 2.4 kernel?
> (Redhat doesn't 'support' 2.4 yet)
You could probably get some back in fairly easily. There's a reasonably
good chance that some of them are already there.
Cheers,
Peter
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