dyl@cory.Berkeley.EDU (dylan mcnamee) (11/12/88)
I posted some diskperfa numbers a couple of days ago. Since then, I backed up my entire drive and did a low level format with an interleave of 2 (instead of 1). Lo and behold, the performance shot up considerably. The stardrive/fujitsu combination now performs fairly closely to some of the DMA controllers reviewed in Amazing Computing. Here's the numbers: StarDrive 2090A File Create 12 12 File Delete 29 41 Dir Scan 92 102 Seek/reads 90 83 512 Byte Buffer read 69.0 55.6 write 26.7 27.5 4k Byte Buffer read 97.1 106.7 write 97.1 134.7 8k Byte Buffer read 119.6 182.8 write 119.6 150.6 32k Byte Buffer read 137.9 320.0 write 131.0 232.7 The 2090 numbers are from Nov 88 Amazing Computing. The StarDrive is a great deal at around $100, And it fits inside the starboard. Getting it configured is non-trivial, as their software is confusing and mixed up. Matt Dillon's scripts (on ucbvax.Berkeley.edu) helped considerably, as did some scsi docs. In short, I like it, but it did require a bit of hacking. My total 40MB system came to less than $550. dylan mcnamee dyl@cory.Berkeley.EDU (I have nothing to do with any commercial company whatsoever, especially MicroBotics, except as a satisfied customer. )