Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!bionet!ames!hc!lll-winken!arisia!sgi!shinobu!odin!sgi.com!scotth From: scotth@sgi.com (Scott Henry) Newsgroups: comp.sys.amiga Subject: Re: Starboard SCSI board woes. (slow as christmas) Message-ID: Date: 22 Jun 89 07:04:08 GMT Sender: news@odin.SGI.COM Reply-To: scotth@sgi.com Distribution: comp Organization: Silicon Graphics Inc, Mountain View, CA Lines: 71 I just want to add to the list of "successfull" Stardrive owners. Here are my fastest and slowest (out of 5) diskperf timings for my setup: File create/delete: create 9 files/sec, delete 20 files/sec Directory scan: 68 entries/sec Seek/read test: 57 seek/reads per second r/w speed: buf 512 bytes, rd 52428 byte/sec, wr 22405 byte/sec r/w speed: buf 4096 bytes, rd 90394 byte/sec, wr 67216 byte/sec r/w speed: buf 8192 bytes, rd 113975 byte/sec, wr 74898 byte/sec r/w speed: buf 32768 bytes, rd 131072 byte/sec, wr 87381 byte/sec File create/delete: create 8 files/sec, delete 27 files/sec Directory scan: 86 entries/sec Seek/read test: 70 seek/reads per second r/w speed: buf 512 bytes, rd 54613 byte/sec, wr 23616 byte/sec r/w speed: buf 4096 bytes, rd 93622 byte/sec, wr 77101 byte/sec r/w speed: buf 8192 bytes, rd 113975 byte/sec, wr 87381 byte/sec r/w speed: buf 32768 bytes, rd 137970 byte/sec, wr 100824 byte/sec I am running a very early (October '85) Amiga 1000 (AmigaDos 1.3 w/FFS) with 2MB Starboard-II and Stardrive SCSI. I am using an Adaptec 4070 and a 30MB (RLL) Miniscribe 8436 (? I forget the exact model number), 65ms average access time. Here is an extract of my mountlist for the tested partition: /* MountList for V1.3 */ DH1: Device = StarDrive.device FileSystem = l:FastFileSystem Unit = 0 Flags = 0x03030 Surfaces = 4 BlocksPerTrack = 26 Reserved = 2 Interleave = 0 LowCyl = 0 ; HighCyl = 74 Buffers = 13 BufMemType = 5 GlobVec = -1 Priority = 10 Mount = 1 DosType = 0x444F5301 StackSize = 4000 # Just for comparison purposes, here are the diskperf results for my workstation at work (an IRIS 4D70G with 380MB ESDI drives): File create/delete: create 11 files/sec, delete 38 files/sec Directory scan: 1563 entries/sec Seek/read test: 622 seek/reads per second r/w speed: buf 512 bytes, rd 426828 byte/sec, wr 496171 byte/sec r/w speed: buf 4096 bytes, rd 486202 byte/sec, wr 587986 byte/sec r/w speed: buf 8192 bytes, rd 475904 byte/sec, wr 543303 byte/sec r/w speed: buf 32768 bytes, rd 509842 byte/sec, wr 569878 byte/sec All of the diskperf results were taken with my normal working configuration. On the Amiga, this is a very non-standard workbench setup: it includes interlace/overscan, dmouse, dcron (for amiga/uucp), Wshell/ Arexx, ARP, other stuff that I don't remember right now. My one real complaint with the Stardrive software is that it Forbid()'s too much when doing disk I/O. --- Scott Henry ** I don't care whether the company likes my opinions or not, they're mine! ** -- Scott Henry #include