Author: Tom Likens
Date: 17:50:48 01/16/03
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On January 16, 2003 at 16:46:10, Eugene Nalimov wrote: >David, *fast* SCSI drive is noticeable faster than best IDE drive. Problem is >not only 15k or 10k rpm vs. 7.2k rpm. Problem is also seek time. On best IDE >drive I had seen it's something ~8-9ms. On *average* SCSI drive it's ~4-5ms. > >More, I have Itanium 2 system with one SCSI drive with 320Mb/sec SCSI disk >drive, and one with "only" 160Mb/sec. And I regularly see the difference. Drive >with 320Mb/sec is really faster when I am doing something with tens of gigabytes >of data :-) > >Thanks, >Eugene Actually, this is almost exactly what I see when I profile my engine. The routine do_decode takes about 10ms per call, which tells me that it is *all* disk I/O. By the way Eugene what does do_decode actually do? I'm guessing it performs the Huffman decode. regards, --tom
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