Vojtech Pavlik <vojtech@suse.cz> writes:
> Perhaps I didn't make myself clear enough: I don't say you can detect
> bit errors without CRC or that CRC makes them stop happening.
True, but basically, the machine itself does not CRC a block in memory,
but the drive CRC's a block on disk. So if you're having memory trouble,
in most machines it will go unnoticed.
> It's great that it's CRC protected with UDMA, but there shouldn't be bit
> errors anyway. It's running on 5V, after all, and there would have to be
> damn strong noise to cause errors like this.
Memory bits usually flip in DRAM, not in transit.
> So the point I was trying to make is that it is reasonable to lower UDMA
> transfer speed if we see a CRC error on the drive and that we won't end
> with the slowest transfer speed if we run the drive like this for long
> enough time.
If you have repeated CRC errors, halt that damn thing entirely to have
somebody look after the hardware.
-- Matthias AndreeWhere do you think you're going today?
- 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/
This archive was generated by hypermail 2b29 : Mon Jul 31 2000 - 21:00:30 EST