Messages in this thread |  | | | Date | Tue, 21 Apr 1998 14:03:42 +0200 | | From | Martin Mares <> | | Subject | Re: Maturity of PCI_OPTIMIZE in 2.0.33 |
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Hi,
> 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."
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