[2500] in Athena Bugs
Possible bug with sort
daemon@ATHENA.MIT.EDU (Ilhamuddin Ahmed)
Sun Jul 2 02:32:27 1989
Date: Sun, 2 Jul 89 02:32:12 -0400
From: Ilhamuddin Ahmed <ilham@ATHENA.MIT.EDU>
To: raeburn@ATHENA.MIT.EDU
Cc: bugs@ATHENA.MIT.EDU
In-Reply-To: Ken Raeburn's message of Sat, 1 Jul 89 20:50:07 -0400 <8907020050.AA00794@MULTICS.MIT.EDU>
Reply-To: ilham@ATHENA.MIT.EDU
HARDWARE: 6.3A RT
Here are some more observations about the line that gets corrupted.
- always is the shell process (with same tty - process group)
as the tty that the 'ps' command is run from.
- always gets corrupted when the shell process is in disk-wait
('D' in the shell process from ps). Sometimes starting with
"a <start> ...." and other times has "more" or "sort" as the
command instead of the shell!!!
- sometimes gets corrupted when shell process is running ('R' in
the STAT column from ps).
- never gets corrupted when the process is sleeping ('S' in ps)
The following were got by running |ps | sort | more" on ttyp4 :
2471 p4 S 0:05 -sh (csh)
2471 p4 R 0:00 a <start> ] ?db b?b"b3bDbUbfbwb?b?b*b;bLb]bnb
2471 p4 R 0:00 sort
2471 p4 D 0:00 a <start> ] ?db b?b"b3bDbUbfbwb?b?b*b;bLb]bnb
2471 p4 D 0:00 a <start> ] ?db b?b"b3bDbUbfbwb?b?b*b;bLb]bnb
2471 p4 D 0:00 more
garfield [96] (ilham) % ps wwl2471
F UID PID PPID CP PRI NI ADDR SZ RSS WCHAN STAT TT TIME COMMAND
10082013673 2471 2451 2 15 0 362 184 106 u S p4 0:06 -sh (csh)
