Path: utzoo!mnetor!uunet!husc6!uwvax!puff!avery From: avery@puff.cs.wisc.edu (Aaron Avery) Newsgroups: comp.sys.amiga.tech Subject: Re: Fast File System for floppys ... how to. Message-ID: <1683@puff.cs.wisc.edu> Date: 8 May 88 09:17:45 GMT References: <30793@amdahl.uts.amdahl.com> <5888@well.UUCP> <861@imagine.PAWL.RPI.EDU> <3748@cbmvax.UUCP> Reply-To: avery@puff.WISC.EDU (Aaron Avery) Organization: U of Wisconsin CS Dept Lines: 26 In article <3748@cbmvax.UUCP> grr@cbmvax.UUCP (George Robbins) writes: >In article <861@imagine.PAWL.RPI.EDU> jesup@pawl15.pawl.rpi.edu (Randell E. Jesup) writes: >I think Steve allows that the diskchange command would allow you to safely >remove the disks, however since the normal user has become habituated to >popping disks in and out like a electrified toaster, it quite likely you'ed >get burned at least a few times before the new rules sink in. After my posting regarding the use of diskchange with the FFS attached to the floppy, I decided to try it out. Yes, FFS seems to react correctly to the DiskChange command. It seems to be only a partial reaction, but it looks like a safe one. When I did some timing tests comparing the SFS (Slow Filing System) and the FFS (Fast Filing System) on floppy, I got the following results: On a disk with about 100 files and directories, I did listed their contents and found that the SFS disk took 17.76 seconds while the FFS disk took 12:87 seconds. This may not look like such a marked improvement, but this was on a freshly created 1.2 SFS disk, which isn't the slowest beast in the world. The FFS disk was still impressive. I only noticed a minor increase in transfer rate, probably since the floppies aren't really pushing the SFS to its maximum. It still irks me when people refer to the Amiga's floppy drives as being 'the slowest floppy drives in the 16-bit world', just because it can take so long to get a directory. They still have one of the fastest net data transfer rates 'in the 16-bit world'. -- Aaron Avery (avery@puff.cs.wisc.edu) ({seismo,caip,allegra,harvard,rutgers,ihnp4}!uwvax!puff!avery)