[sabayon-dev] Enabling CPU microcode update in Sabayon 7
miciamail at hotmail.it
Sat Sep 17 15:28:30 CEST 2011
As far as I know the main benefits are fixes in the CPU microcode, as
basically the service will update the CPU microcode with more recent
versions, if necessary.
I don't know if this could bring also some performance improvements or
better powersaving. I doubt that the kernel already handles this, since
the microcode data is shipped by Intel or AMD themselves.
As far as I understand from the AMD documentation, the microcode update
is performed by the microcode module and I don't recall it being running
in any AMD installation, so I would exclude that the microcode update is
automatically handled by the kernel.
As far as I can tell from the services files and lsmod output, that
module is also needed for microcode_ctl, and it wasn't running before I
activated that service (actually, if there is no change in
the /etc/conf.d/microcode_ctl file, that module will be unloaded as soon
as the first microcode update is performed).
I would add it to the boot rulevel since this operation should be
performed early in the boot sequence, but I don't think that it would
hurt putting it in the default runlevel.
Also, usually any Linux distribution (like OpenSuSE, for example)
usually has it active by default.
On a separate note, another related service that could be useful is:
and usually that service is enabled by default on other distributions
Of course I don't mean that just because other distros do enable it, we
should too :)
Il giorno sab, 17/09/2011 alle 15.10 +0200, Fabio Erculiani ha scritto:
> I've been always resilient to the addition of new boot services.
> What are the benefits of having microcode updates? Just CPU bug fixes?
> I never felt the need of updating the microcode of my CPU actually.
> Isn't it something that the kernel already takes care of?
More information about the devel