rbc@houxu.UUCP (R.CONNAGHAN) (02/05/86)
Help, is this a bug with the "ps" command?
Type at UNIX prompt:
ps -F
Get error message and core file:
Bad system call - core dumped
This is a valid form of the "ps" command according to the
On-line manual page and the usage message printed by the "ps" command.
This flag is not in my latest UNIX manual: System V, Release 2.
When executed it yields a core dump.
The ps command will print out the following usage message:
usage: ps [ -edalfF ] [ -c corefile ] [ -s swapdev ]\
[ -n namelist ] [ -t tlist ]\
[ -p plist ] [ -u ulist ] [ -g glist ] [ -G FSSlist ]
The on-line manual page explains the F flag as follows:
-F Print the fair share group process assocation.
I have tried this on a 3B-20 and a VAX and have gotten the same result.
Output of "uname -a" command to identify systems:
System 1: houxu houxu SV_R2 10020 3B-20S
System 2: houxv houxv 2.0v2 11240 vax-780
I have two questions:
Is this a bug or am I doing something wrong?
What does the "-F" flag mean?
--
Robert Connaghan
WE 32100 Microprocessor Group
AT&T Information System - Holmdel, N.J.
houxu!rbcpdg@ihdev.UUCP (P. D. Guthrie) (02/05/86)
In article <738@houxu.UUCP> rbc@houxu.UUCP (R.CONNAGHAN) writes: >Help, is this a bug with the "ps" command? > >Type at UNIX prompt: > > ps -F > >Get error message and core file: > > Bad system call - core dumped > > ... > >The on-line manual page explains the F flag as follows: > > -F Print the fair share group process assocation. > > .... >I have two questions: > Is this a bug or am I doing something wrong? > What does the "-F" flag mean? >-- I think this is actually quite simple. A fair share group is "a group of processes associated with the same resource consumption rate" (AT&T BLTJ October 1984 V63. No.8 Part 2, _The_Fair_Share_Scheduler_, G.J. Henry) which more or less boils down to a replacement for the standard UNIX scheduler. The -F flag obviously displays the group the the process is in. Actually most of our local machines do use this beast, and `ps -F' does work as advertised. The problem is that ps tries to do an illegal system call to get fsg info (which of course your kernel knows nothing about). The fix is to conditionally compile this code in, depending on whether fsg's exist on your system or not to use it at all. Hope this helps. -- Paul Guthrie `When the going gets weird, ihnp4!ihdev!pdg The weird turn pro' - H. Thompson
ecc@ihuxj.UUCP (Eric C. Claeys) (02/07/86)
> Help, is this a bug with the "ps" command? > > Type at UNIX prompt: > > ps -F > > Get error message and core file: > > Bad system call - core dumped > > This is a valid form of the "ps" command according to the > On-line manual page and the usage message printed by the "ps" command. > This flag is not in my latest UNIX manual: System V, Release 2. >>>>>>> It IS in the October 1985 manual published by >>>>>>> Bell Labs Division 452. Your manual is either out of date, >>>>>>> or is the "standard" ATT manual, not the DIV 452 manual -- ecc ... > The on-line manual page explains the F flag as follows: > > -F Print the fair share group process assocation. ... > I have two questions: > Is this a bug or am I doing something wrong? > What does the "-F" flag mean? >>>>>> The Fair Share Scheduler is a Division 452 addition that is explained >>>>>> in last October's BSTJ. >>>>>> When installed on a system, a new system call is added. >>>>>> Your machines probably were not compiled with FSS turned on; >>>>>> that is an administrative <--> customer decision. Many computer >>>>>> centers use FSS, HO may not. Contact your SA if you want to know. >>>>>> Eric C. Claeys IHCC
gwyn@brl-smoke.ARPA (Doug Gwyn ) (02/10/86)
>> ps -F >> >> Get error message and core file: >> >> Bad system call - core dumped >> >> This is a valid form of the "ps" command according to the >> On-line manual page and the usage message printed by the "ps" command. >> This flag is not in my latest UNIX manual: System V, Release 2. > >>>>>>>> It IS in the October 1985 manual published by >>>>>>>> Bell Labs Division 452. Your manual is either out of date, >>>>>>>> or is the "standard" ATT manual, not the DIV 452 manual -- ecc > >... > >> The on-line manual page explains the F flag as follows: >> >> -F Print the fair share group process assocation. > >... > >>>>>>> The Fair Share Scheduler is a Division 452 addition that is explained >>>>>>> in last October's BSTJ. >>>>>>> When installed on a system, a new system call is added. >>>>>>> Your machines probably were not compiled with FSS turned on; >>>>>>> that is an administrative <--> customer decision. Many computer >>>>>>> centers use FSS, HO may not. Contact your SA if you want to know. Now that you guys have the whole world wondering, could you please tell us: (1) What is Division 452 and how does it relate to the commercial UNIX System V product and/or the SVID? (2) How can we get hold of DIV 452 manuals?
tg@sfmin.UUCP (T.Glinos) (02/12/86)
> Now that you guys have the whole world wondering, could you > please tell us: > (1) What is Division 452 and how does it relate to the > commercial UNIX System V product and/or the SVID? Division 452 is a Bell Labs organization located in Ill. They have traditionally hacked the standard System V release to provide various features (like the Fair Shair Schedualer) and functionality that DIV 452 and other AT&T entities have come to rely on. These people are in no way related to the SVID editors/writers. They are not related to the Information Systems organization that produces the commercial UNIX System V product. > (2) How can we get hold of DIV 452 manuals? I may be incorrect but I don't think you can get DIV 452 manuals. They are probably concidered propriatery [sp?].