Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!network!ucsd!tut.cis.ohio-state.edu!cs.utexas.edu!uunet!mcvax!kth!draken!d88-jwa From: d88-jwa@nada.kth.se (All this was brought to you by h+@nada.kth.se Replys via email welcome!) Newsgroups: comp.sys.mac Subject: Re: Hey Apple Mac engineers, answer->Ma Message-ID: <1415@draken.nada.kth.se> Date: 14 Aug 89 08:05:49 GMT References: <14845@dartvax.Dartmouth.EDU> <46100321@uxe.cso.uiuc.edu> Reply-To: h+@nada.kth.se (Jon W{tte) Organization: Royal Institute of Technology, Stockholm, Sweden Lines: 24 In article <46100321@uxe.cso.uiuc.edu> mcdonald@uxe.cso.uiuc.edu writes: >Incidentally, I was using a Mac recently do some scanning (soon >to appear as a lovely posting in sci.astro (advertisement)). It >was running multifinder. The watch icon kept appearing and >there was no way to stop it except the power switch. This is beacause the scanner is a SCSI device, and the Mac has no way of handling asynchronous SCSI (Because of the plusses... Do we HAVE to drag them along for eternal time ? But there is a light at the end of the tunnel, VM in Sys 7 ! Soon to arrive (around Sys 9 or so :-) : Protected Memory) I once saw a "TRUE MULTITASKING" UNIX system freeze while the SCSI tape streamer streamed. You can always use nice -20 (if you are root) etc. There are many ways to lock up a "true" multitasking system. Try using sockets (play "hunt" for instance) and send lots of small data. Quick. Your system manager's gonna hate you (and have to reboot the machine) :-( Happy hacking anyway, sez' h+@nada.kth.se -- Loop, Endless: (n) Also called Dynamic Halt. See Endless Loop.