[Info-vax] show sys command output

[Sergejus Zabinskis]

On Friday, July 14, 2017 at 1:45:20 PM UTC+2, Jan-Erik Soderholm wrote:
> Den 2017-07-14 kl. 13:34, skrev Sergejus Zabinskis:
> > On Friday, July 14, 2017 at 12:20:01 PM UTC+2, VAXman- wrote:
> >> In article <oka2lh$gku$1 at news.albasani.net>, Jan-Erik Soderholm
> >> <jan-erik.soderholm at telia.com> writes:
> >>> Den 2017-07-14 kl. 11:07, skrev Sergejus Zabinskis:
> >>>> Hi all,
> >>>> 
> >>>> 
> >>>> Maybe somebody knows exactly the meaning of last column (Pages)
> >>>> for this command:
> >>>> 
> >>>> $ sh sys/node=abcd/own=dml_2016
> >>>> 
> >>>> Pid    Process Name    State  Pri      I/O       CPU       Page
> >>>> flts  Pages 2608C82C DML_SERVER_2016 HIB      6  4033997   0
> >>>> 00:17:18.93     16214  16662 M
> >>>> 
> >>>> I get here value 16662 M for Pages column.
> >>>> 
> >>>> And is it possible to get this value using DCL f$getjpi( pid, item
> >>>> ) call(s) ?
> >>>> 
> >>>> 
> >>>> Kind regards Sergejus
> >>>> 
> >>> 
> >>> Not sure for the "pages" (I had guessed WSSIZE, but I do not get
> >>> the same values even after scaling). But the "M" is item
> >>> "MULTITHREAD"...
> >> 
> >> $ WRITE SYS$OUTPUT
> >> (F$getjpi(PID,"GPGCNT")+F$getjpi(PID,"PPGCNT"))/(F$getsyi("PAGE_SIZE")/512)
> >>
> >>
> >> 
> -- 
> >> VAXman- A Bored Certified VMS Kernel Mode Hacker
> >> VAXman(at)TMESIS(dot)ORG
> >> 
> >> I speak to machines with the voice of humanity.
> > 
> > Thanks a lot. I made some googling about process memory usage and found
> > some information about sum PPGCNT + GPGCNT
> > (http://h41379.www4.hpe.com/wizard/wiz_4414.html). So, sum GPGCNT+PPGCNT
> > is normalized by number of blocks in page. And what is the size of page
> > from show sys command ? F$getsyi("PAGE_SIZE") ?
> > 
> > Kind regards Sergejus
> > 
> 
> 
> F$getsyi("PAGE_SIZE") depends on your own system. Just try it and check.
> 
> On my Alpha it is 8192 (8 Kbyte) as expected. So on an Alpha, the command
> above from VAXman is the same as:
> 
> $ WRITE SYS$OUTPUT (F$getjpi(PID,"GPGCNT")+F$getjpi(PID,"PPGCNT")) / 16

Ok. But I am slightly confused by terminology. From DCL doc I see that f$getjpi( pid, "GPGCNT" ) returns "Global page count in working set." PPGCNT is for "Process page count." So, why we divide them by 16 ? Does it mean that PPGCNT is really PAGE_SIZE*16 ?

Kind regards
Sergejus