jwbirdsa@amc-gw.amc.com (James Birdsall) (03/20/91)
My 3B1 spends 95% of its time with the yellow "no process" light
showing. Does anybody have a raytracer or other interesting noninteractive
program which could be renice'd heavily and keep the machine gainfully
employed? :)
Also, somebody recently asked how to get HDB to dial tone instead of
pulse. Was there an answer?
--
James W. Birdsall WORK: jwbirdsa@amc.com {uunet,uw-coco}!amc-gw!jwbirdsa
HOME: {uunet,uw-coco}!amc-gw!picarefy!jwbirdsa OTHER: 71261.1731@compuserve.com
================== Kitten: a small homicidal muffin on legs. ==================
=========== "For it is the doom of men that they forget." -- Merlin ===========prp@sei.cmu.edu (Patrick Place) (03/25/91)
There was an answer - use obminit from the osu archives to reset the modem to use tone rather than pulse dialing. I am a little disappointed that this is the solution since it seems as though installing HDB has reset something and it would be nice to undo that little change once and for all rather than having to invoke obminit in the rc script. Pat Place prp@sei.cmu.edu The asker of the question about HDB, OBM and pulse vs. tone dialing.
jbm@uncle.uucp (John B. Milton) (03/30/91)
In article <6274@amc-gw.amc.com> jwbirdsa@polaris.amc.com () writes: > > My 3B1 spends 95% of its time with the yellow "no process" light >showing. Does anybody have a raytracer or other interesting noninteractive >program which could be renice'd heavily and keep the machine gainfully >employed? :) You could renice a CPU intensive program down, but it will still have a significant impact on other higher priority processes. This is because of the granularity of the schedualer. Once a low priority process starts running, it will continue to run until the next time the schedualer picks another process to run. The place in the kernel where it waits when idle is a function called "idle". It is called by the schedualer, "swtch". I have found the JSR instruction in swtch in 3.51m and written a loadable device driver which patches it to go to a replacement idle function in the driver. This may be of limited use, because the idle function executes in kernel space, but it is a hook for those of you who are interested. Another problem with putting useful code here is the fact that idle() must stop doing whatever it's doing when a global flag is cleared (by interrupt routines). The VIDMEM stuff in the example idle function is the "useful" part. The other stuff (clock, spl) has to stay there. > Also, somebody recently asked how to get HDB to dial tone instead of >pulse. Was there an answer? If you are using an extern HAYES type modem, then change ATDP to ATDT on the appropriate line in the Dialers file (System->Devices->Dialers). If you are using the OBM, edit the appropriate file in /etc: .lineone or .linetwo, the TT= is for TouchTone (TM). John --- #! /bin/sh # This is a shell archive. Remove anything before this line, then unpack # it by saving it into a file and typing "sh file". To overwrite existing # files, type "sh file -c". You can also feed this as standard input via # unshar, or by typing "sh <file", e.g.. If this archive is complete, you # will see the following message at the end: # "End of shell archive." # Contents: idl.c inst # Wrapped by jbm@uncle on Fri Mar 29 23:24:46 1991 PATH=/bin:/usr/bin:/usr/ucb ; export PATH if test -f 'idl.c' -a "${1}" != "-c" ; then echo shar: Will not clobber existing file \"'idl.c'\" else echo shar: Extracting \"'idl.c'\" \(2071 characters\) sed "s/^X//" >'idl.c' <<'END_OF_FILE' X/* vi:set ts=2 sw=2: */ X X#include <sys/hardware.h> /* for led_on/off */ X#include <sys/iohw.h> /* for VIDMEM */ X X#if 0 X#define VILEN 16 X#define VIDLE1 (VIDMEM+309*45+28) X#define VIDLE2 (VIDMEM+310*45+28) X#else X#define VILEN 45 X#define VIDLE1 (VIDMEM+346*45+0) X#define VIDLE2 (VIDMEM+347*45+0) X#endif X Xextern short clkrun; Xextern int idleflag; Xextern int swtch(); Xextern long scrticks; X Xstatic int myidle(n) Xint n; X{ X register char off=0,offn=0,c1,c2; X int x; X unsigned short value[VILEN]; X X idleflag=1; X x=spl0(); X value[0]=0x8000; X while (idleflag && n) { X led_on(LED2); /* tell the world we're idle */ X if (n>0) X n--; X spl0(); X if (clkrun) X clockspecial(); X if (scrticks>=0) { X if (value[off]&1) { X offn=(off+1)%VILEN; X value[offn]=(value[offn]>>1)|0x8000; X *(VIDLE1+offn)=*(VIDLE2+offn)=value[offn]; X c2=offn; X } X value[off]>>=1; X c1=off; X if (!value[off]) { X *(VIDLE1+off)=*(VIDLE2+off)=0; X off=offn; X } else X *(VIDLE1+off)=*(VIDLE2+off)=value[off]; X } X } X if (scrticks>=0) X *(VIDLE1+c1)=*(VIDLE2+c1)=*(VIDLE1+c2)=*(VIDLE2+c2)=0; X idleflag=0; X led_off(LED2); X splx(x); X} X Xstatic int orig; X Xidlinit() X{ X char *oldidle; X X oldidle=(char *)swtch; X oldidle+=0x7c+2; /* point to the long address part of the jsr */ X orig=*(int *)oldidle; X *(int *)oldidle=(int)myidle; X return; X} X Xidlrelease() X{ X char *oldidle; X X oldidle=(char *)swtch; X oldidle+=0x7c+2; /* point to the long address part of the jsr */ X *(int *)oldidle=orig; X return; X} X X#if 0 Xswtch+70: mov.b &7f,curpri Xswtch+78: moveq.l &-1,%d0 Xswtch+7a: mov.l %d0,(%sp) Xswtch+7c: jsr idle Xswtch+82: or.w &700,sr Xswtch+86: and.w &-101,sr X X TS32: X000498: 13fc 007f 0000 0000 mov.b &127,curpri X0004a0: 70ff mov.l &-1,%d0 X0004a2: 2e80 mov.l %d0,(%sp) X0004a4: 4eb9 0000 0000 jsr idle X X TS30: X0004aa: 007c 0700 or.w &0x700,%sr X0004ae: 027c feff and.w &0xfffffeff,%sr X#endif END_OF_FILE if test 2071 -ne `wc -c <'idl.c'`; then echo shar: \"'idl.c'\" unpacked with wrong size! fi # end of 'idl.c' fi if test -f 'inst' -a "${1}" != "-c" ; then echo shar: Will not clobber existing file \"'inst'\" else echo shar: Extracting \"'inst'\" \(361 characters\) sed "s/^X//" >'inst' <<'END_OF_FILE' X: X# vi:set ts=2 sw=2: Xif cc -Oc idl.c; then X mv idl.o /etc/lddrv X cd /etc/lddrv X if ../masterupd -c idl >/dev/null; then X ./lddrv -dv idl X else X ../masterupd -a char init release idl X fi X sync; sync; sync X ./lddrv -av idl X # uncomment if you want "idl" to come up when you boot X # if grep '^idl$' drivers >/dev/null; then :; else echo "idl" >> drivers; fi Xfi END_OF_FILE if test 361 -ne `wc -c <'inst'`; then echo shar: \"'inst'\" unpacked with wrong size! fi chmod +x 'inst' # end of 'inst' fi echo shar: End of shell archive. exit 0 -- John Bly Milton IV, jbm@uncle.UUCP, n8emr!uncle!jbm@osu-cis.cis.ohio-state.edu (614) h:252-8544, w:785-1110; N8KSN, AMPR: 44.70.0.52; Don't FLAME, inform!