Duration of Blocked Interrupts

Mark Hahn hahn at neurocog.lrdc.pitt.edu
Tue Apr 28 13:43:18 PDT 1998


Robert G. Brown said:
...
> interrupt density and I rarely use them.  Ditto "No IDE devices", right?

no, not right.  Linux does a very good job with busmastering IDE
(scatter gather, head scheduling, etc.).  IDE definitely has a place
in well-designed systems, though naturally if you need many and/or
different devices, SCSI is the right choice...  the key point to remember
is that dual-channel, UDMA controllers are already on most motherboards,
and IDE disks are currently at $30-$35/GB, both much cheaper than SCSI...

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