Path: utzoo!mnetor!uunet!seismo!sundc!pitstop!sun!decwrl!decvax!purdue!gatech!udel!mmdf
From: V050KY8G@ubvmsc.cc.buffalo.edu
Newsgroups: comp.os.minix
Subject: RE: I am seeking test program that hangs the system
Message-ID: <1234@louie.udel.EDU>
Date: 28 Feb 88 06:11:52 GMT
Sender: mmdf@udel.EDU
Lines: 11

Well, I'm only working with V1.1 of the system now, but I notice one of the
things that tends to "hang" the system, at least temporarily, by tying up the
FS task is when ^S is typed on the console.  I noticed this one day while
running a disk arm exerciser in the background ("&" on the end of the command
line) whilst examining a long file with cat.  The first ^S I hit (to read around
a screenful) caused the FS to naturally wait for the TTY task to reply ("I am
done outputting those characters for you now").  Meanwhile, my hard disk arm
stopped (it was doing read()'s from /dev/hd2).  A dump of the system (F2?)
showed the problem: FS waiting for a msg from TTY.  Has this been corrected in
V1.2 of the system?  I remember seeing a description in the DL section of
CompuServe something about a "multitasking FS"... was this implemented in 1.2?