I sort of answered my own question... dropped a SCSI-2 drive from my B&W into my PM 9500, mozilla load time went from 30s to 10s... (compared to a regular seagate barracuda on the internal SCSI bus). Both drives are 7200 rpm, so i'm tempted to attribute this to the extra throughput from SCSI-2.
ayup. By going from SCSI-1 to -2F, you went from 5 MB/sec to 10 MB/sec. Still less than the actual capability of that diameter & rpm drive tho - that's what faster SCSI's fix. :)
I'm wondering just how far (and how cost effectively) you can push one of these old PCI powermacs with OS X. Any other thoughts?
The PCI can burst at up to 264 MB/sec, far faster than the attachment (ATA, SCSI, etc) interfaces can do. You could throw in a couple of fiber channel cards, 100 MB/sec each...
As for OS X... Well, it's i/o kernel is bored. The problem is the crud Apple added to make FreeBSD/Mach look/feel pretty -- it needs supercomputer-class processors and boatloads of RAM.
From: "Osita Udekwu" <[EMAIL PROTECTED]>
The Power Mac 7300/180 I'm currently using was once part of a grid in Berkeley's Physics Dept. :)
- Dan.
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