Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!uunet!cs.utexas.edu!usc!apple!uokmax!drtiller From: drtiller@uokmax.uucp (Donald Richard Tillery Jr) Newsgroups: comp.sys.amiga Subject: Re: All this talk about HD controllers (long - comparisons) Message-ID: <1990Aug3.193415.25515@uokmax.uucp> Date: 3 Aug 90 19:34:15 GMT References: <90214.221507IO91461@MAINE.BITNET> Organization: Engineering Computer Network, University of Oklahoma, Norman, OK Lines: 113 Just a comment on speeds. I too have the Hardframe 2000. I also have the GVP A3001 accelerator (28Mhz) with a hard drive attached. Currently I have a 40Meg Quantum AND a SyQuest removable media on the Hardframe and an 80 Meg Quantum AT on the accelerator. What follows is a comparison of these hard drives to the stock internal B2000(*) floppy (OFS) and to the regular and recoverable RAM disks (done with DPerf2 in '030 mode with Burst, Cache, and FastROM enabled): ------------------------------------------------------- DiskPerf2. Testing RAM DISK: Create Files: 37 files/sec. Directory Scan: 39 entries/sec. Delete Files: 74 files/sec. Seek/Read Test: 370 seek/sec. Read/Write Speed Test: (bytes/sec.) Buffer: 512 Read: 562,540 Write: 337,379 Buffer: 4k Read: 2,788,765 Write: 873,813 Buffer: 8k Read: 3,404,467 Write: 926,303 Buffer: 32k Read: 3,971,878 Write: 985,503 Buffer: 64k Read: 4,369,066 Write: 985,503 Buffer: 256k Read: 4,766,254 Write: 985,503 ------------------------------------------------------- DiskPerf2. Testing RAMB0: (880K Recoverable RAM disk) Create Files: 125 files/sec. Directory Scan: 263 entries/sec. Delete Files: 273 files/sec. Seek/Read Test: 620 seek/sec. Read/Write Speed Test: (bytes/sec.) Buffer: 512 Read: 302,706 Write: 231,371 Buffer: 4k Read: 762,046 Write: 503,155 Buffer: 8k Read: 816,647 Write: 519,097 Buffer: 32k Read: 891,646 Write: 537,180 Buffer: 64k Read: 876,735 Write: 542,741 Buffer: 256k Read: 891,646 Write: 549,568 ------------------------------------------------------- DiskPerf2. Testing Empty: (880K OFS floppy) Create Files: 0 files/sec. Directory Scan: 102 entries/sec. Delete Files: 1 files/sec. Seek/Read Test: 2 seek/sec. Read/Write Speed Test: (bytes/sec.) Buffer: 512 Read: 10,213 Write: 3,979 Buffer: 4k Read: 14,081 Write: 5,874 Buffer: 8k Read: 14,461 Write: 5,969 Buffer: 32k Read: 14,465 Write: 5,944 Buffer: 64k Read: 14,144 Write: 5,890 Buffer: 256k Read: 14,229 Write: 5,887 ------------------------------------------------------- DiskPerf2. Testing Hardframe: Create Files: 19 files/sec. Directory Scan: 462 entries/sec. Delete Files: 54 files/sec. Seek/Read Test: 294 seek/sec. Read/Write Speed Test: (bytes/sec.) Buffer: 512 Read: 187,245 Write: 22,302 Buffer: 4k Read: 298,909 Write: 174,182 Buffer: 8k Read: 441,319 Write: 259,548 Buffer: 32k Read: 605,413 Write: 400,219 Buffer: 64k Read: 716,240 Write: 476,625 Buffer: 256k Read: 695,342 Write: 508,031 ------------------------------------------------------- DiskPerf2. Testing GVP 1: (A3001/28Mhz AT controller) Create Files: 21 files/sec. Directory Scan: 417 entries/sec. Delete Files: 52 files/sec. Seek/Read Test: 284 seek/sec. Read/Write Speed Test: (bytes/sec.) Buffer: 512 Read: 104,439 Write: 21,929 Buffer: 4k Read: 240,941 Write: 152,232 Buffer: 8k Read: 310,597 Write: 208,050 Buffer: 32k Read: 502,191 Write: 312,821 Buffer: 64k Read: 613,920 Write: 403,919 Buffer: 256k Read: 695,342 Write: 503,155 ------------------------------------------------------- DiskPerf2. Testing Graphics: (SyQuest 44 Meg removable) Create Files: 12 files/sec. Directory Scan: 442 entries/sec. Delete Files: 54 files/sec. Seek/Read Test: 227 seek/sec. Read/Write Speed Test: (bytes/sec.) Buffer: 512 Read: 119,156 Write: 19,213 Buffer: 4k Read: 160,529 Write: 127,937 Buffer: 8k Read: 255,252 Write: 186,579 Buffer: 32k Read: 449,646 Write: 295,207 Buffer: 64k Read: 525,338 Write: 352,344 Buffer: 256k Read: 549,568 Write: 383,812 ------------------------------------------------------- From this I infer (at least with DPerf2) that data organized into a disk (or pseudo-disk) format can't easily be read at much above 900K/sec. When I saw these results, I was even more pleased with my hard drive performance, and I was pleasantly surprised by the speed of the SyQuest drive (now roughly two weeks old). Happy Hard Driving!. _______ __________ _/____) ' __ /_/ / ' / / __ _ "N.I.N.J.A.J.I.S."-Me / \___/__/___/ |_ /__/__/__/_/_-_/__/_/ The Displaced Razorback. ___________________________________________/ Founder: IDGAFF Ltd. The Amiga Computer - "...a more fiendish disputant than the Great Hyperbolic Omni-Cognate Neutron Wrangler of Ciceronicus Twelve..." -D.Adams; Well, almost.