Re:
> Hello listmembers. Is there a way to determine
> EXACTLY which processes within an application are
> causing excessive CM/NM switching ? As shown in
> the CPU Detail screen of GlancePlus/iX.  I'm doing

I don't know, but perhaps the Glance "Process detail" (?)
screen might show the switch rate...if so, you could
look at a few of the most active processes to see their
switch rates.

<plug>
SHOT won't show the switch *rate*, but it can show the
switch depth:

:shot
SHOT: ADM +SWDEPTH
SHOT: ALL
SHOT @ FRI, JAN 12, 2001, 11:07 AM
...
? PIN  CPU   Process Name               Pri Q Delta  %  Ic S Wait State
- --- ------ -------------------------- --- - ----- --- -- - ------------------
    1 s   10 PROGEN.PUB.SYS              13 A           Nn   PROGEN_GLOBAL_PORT
...
   61    332 CI.PUB.SYS                 202 D           Nn 2 SON, FATHER
   62    288 JSMAIN.PUB.SYS             152 B           Nn   MsgPort#-32785

The "S" column above shows that CI.PUB.SYS has two outstanding switches
(from NM to CM, and then CM to NM).  A stack trace of process 61 would
confirm this.
</plug>

Once you zero in on a process, we have some free Debug/iX macros that
can be of use (available at
http://www.allegro.com/software/hp3000/allegro.html)
(look for "SHOWSW")

Example:

   :debug
   $60 ($85) nmdebug > use showsw.macro
   ...

   $61 ($85) nmdebug > show_sw
   added: NM    [1] SYS a.00e4fb4c SWT
   Installed CM -> NM switch watcher.
   added: NM    [2] SYS a.00e62f24 switch_to_cm
   Installed NM -> CM switch watcher.
   added: NM    [3] SYS a.0026ae08 terminate_process
   $62 ($85) nmdebug > c

Now that I have "started" show_sw, let's do a CI command...

   :showtime
     n>C ?exec_cmd+$8                    : NLGETLANG+$168
   C>n switch marker         : NLGETLANG+%37         (4)... NMFINDJCW+%36
   FRI, JAN 12, 2001, 11:10 AM
   :

Note that the CI switched from NM to CM ("n>C") at NLGETLANG+$168
and from CM to NM at NLGETLANG+%37 (which was approximately called from
NMFINDJCW+%36, I think).

Stan Sieler                                           [log in to unmask]
www.allegro.com/sieler/wanted/index.html          www.allegro.com/sieler