On 23 May 2001 11:50:13 +1200, Juha Saarinen wrote:
> I'm going to rebuild the 2.4.2 kernel, and was wondering about the default
> RAM disk size. In /etc/lilo.conf you have:
>
> append="ramdisk_size=2500"
>
> for both the SMP and the UP kernel. Is that what the default value was set
> to in the kernel .config file as well?
Here is how I understand this stuff:
The value in the kernel is just the default for what the ramdisk size
should be; passing a parameter to lilo overrides that.
Also, this option just sets an upper bound on the size of the ramdisk.
So I wouldn't worry TOO much about getting the size just right.
(But FWIW, the size is set to the default 4086 (4M) in the RPM kernel
configs)
> Also, for the SMP kernels, it might be an idea to take out APM support, as
> it's supposedly not SMP safe.
Configure.help says this:
Note that the APM support is almost completely disabled for
machines with more than one CPU.
At one point there was a discussion about allowing a tiny subset of AMP
functionality on SMP machines - basically, to allow soft power-off -
since so few machines are supported by ACPI under Linux at this point.
Since the configuration is _possible_, I assume (?) that it's safe, as
implemented.
-Eric
-----
Eric Sandeen XFS for Linux http://oss.sgi.com/projects/xfs
sandeen@xxxxxxx SGI, Inc.
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