Messages in this thread | | | From | Benno Senoner <> | Subject | Re: disk corruptions on "tuned" disks Was: APM killing low-latency performance on BX mainboard | Date | Thu, 11 Nov 1999 02:53:53 +0100 |
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On Thu, 11 Nov 1999, Alan Cox wrote: > > > It would be nice if we could collect some data about problematic > > drives / mainboards. > > Alan any know drives ? > > The problematic stuff is almost all ISA. That makes life hard. With PCI we > can probe and pick up problem stuff (RZ1000 etc) The VIA VP1/VP2 are others > with interesting issues (our DMA autotune code fails on them) > > > Is this more a harddisk issue or an mainboard issue ? > > IDE controller issue.
thanks. > > > On Pentium+ boxes, with not too old disks, the problem should be > > pratically inexistent. > > Correct.
Is this true even for CDROMs in DMA mode (DMAed CDROM drives on Pentium+ boxes bugfree or not ?)
Alan, how do you stand to this IDE CDROM DMA BUG ? (pointed out by Dan Hollis)
> > > But such an automatic tuning/check has soon to be implemented into distros, > > in order to get the maximum performance out of the HW. > > ( Or are you not willing to try out the 5th gear of your Ferrari ? :-) ) > > Distributions have to work with as much hardware as possible.
Agreed, and that is the reason because you have to be careful when doing the tuning. But users with non-flawed hardware should be able to use the 5th gear.
It would be a bit disappointing to say: "do not use the CDROM drive while usign your harddisk recording app, because it might ruin your realtime performance"
>It's more a case > of ensuring that the car delivered goes and the wheels don't fall off than > the hand tuning it. The latter is _very_ hard.
Of course I agree 100% : the system should be reliabe and THEN efficient. > > Alan
Benno.
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