Path: utzoo!utgpu!attcan!uunet!lll-winken!lll-tis!helios.ee.lbl.gov!pasteur!ucbvax!CORY.BERKELEY.EDU!dillon
From: dillon@CORY.BERKELEY.EDU (Matt Dillon)
Newsgroups: comp.sys.amiga
Subject: seeking problem solved w/ adaptec, have DiskPerf results.
Message-ID: <8807281433.AA02114@cory.Berkeley.EDU>
Date: 28 Jul 88 14:33:49 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Lines: 35


	I solved the problems I had with my Adaptec 4000A (st506/412->SCSI).
(I accidently had specified a 3ms non-buffered seek instead of a 17uS
buffered seek).

	I am now running a hard disk system using that and a StarDrive SCSI
controller slapped on the side of my StarBoard on the side of my A1000.
Results are as follows:

System:	  Duel ST4096 (80MB*2 = 160MB) w/Adaptec 4000A all in an enclosure,
	  microbotics Starboard II & StarDrive.  Completely Custom Setup.

Max Throughput (massive read on trackdisk.device): 200K/sec
	(this is what I expect with the fast filesystem)

DOS Throughput (DiskPerf program): (SLOW FILESYSTEM)

File Creations, files/sec:	7
File Deletions, files/sec:	25
Directory Scan, entries/sec:	42
Seek+read/sec:			68

READ SPEEDS w/ varying buffer sizes, bytes/sec:
	512		33608 bytes/sec
	4096		43690
	8192		44431
	32768		43690

WRITE SPEEDS w/ varying buffer sizes, bytes/sec:
	512		13582 bytes/sec
	4096		14018
	8192		13943
	32768		14018


				-Matt