> It is listed as EXPERIMENTAL, but _how_ experiental is it? Is it stable to
> use it on a production system and exactly what does it optimize?
It sets several parameters related to CPU-to-PCI bridging (posted writes,
writeback caching etc.) on several chipsets. It has positive impact on speed
on the following chipsets and only when BIOS forgets to set it itself:
UMC 8891A
UMC 8881F
Intel Mercury/Neptune/Saturn
In general, unless you have one of these chipsets, it has no effect
at all. If you don't have a lazy BIOS, it has no effect even if you have
such chipset and if you have a lazy BIOS, it possibly could break some
things. So preferably don't turn it on.
Have a nice fortnight
-- Martin `MJ' Mares <mj@ucw.cz> http://atrey.karlin.mff.cuni.cz/~mj/ Faculty of Math and Physics, Charles University, Prague, Czech Rep., Earth "If at first you don't succeed, redefine success."- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu