Messages in this thread | | | Subject | Re: disk corruptions on "tuned" disks Was: APM killing low-latency performance on BX mainboard | Date | Thu, 11 Nov 1999 01:43:52 +0000 (GMT) | From | Alan Cox <> |
| |
> > At which point you just corrupted the hard disk on my old 486. Some things > > unfortunately really cannot be let loose like that. > > Yes I know this, but this EIDE tuning is REQUIRED in order to > get rock solid scheduling performance out of your box.
Rock solid scheduling isnt a property of a corrupt disk.
> 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.
> On Pentium+ boxes, with not too old disks, the problem should be > pratically inexistent.
Correct.
> 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. 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.
Alan
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
| |