Re: Batch Immediate CGI =/= Interactive monster?

[Charles Wilt <charles.wilt@xxxxxxxxx>]

There is no inherent difference between job types...a job is a job is a job...

Now, by default, specific jobs are defined to use specific classes
(*CLS) and the attributes of the classes may cause the run time
attributes of a job of one type to differ from another...but any of
that can be (and arguably should be) customized...

Default interactive class uses a priority 20, whereas default for CGI is 25...

Assuming there's nothing else running, having a couple of threads
taking 35% of CPU is not a problem, in fact you can make the argument
that they should be taking 100%.  After all, unless the CPU is at
100%, you're wasting cycles doing absolutely nothing.  Since they
aren't you know the jobs are waiting on disk i/o.  The real question
is are they doing useful work efficiently?  You'd need to run some
performance traces or SQL monitors to determine that.  It may not
matter, till you get to the point where you've got other work waiting.

Lastly, performance of switching between open sessions is _ALWAYS_ a
function of the load on the PC, not the i.

HTH,
Charles

On Mon, Sep 19, 2011 at 7:07 AM, Jim Oberholtzer <midrangel@xxxxxxxxxx> wrote:
> What version of the OS?
>
> Jim Oberholtzer
> Chief Technical Architect
> Agile Technology Architects
>
>
> On 9/19/2011 5:49 AM, Luke Gerhardt wrote:
> > I've got a CGI job with two threads, each running at around 35% when
> > /nothing else /is active.  They're listed as 'BCI'-type jobs.  This CGI
> > system has been in place for about 6 months.  Yesterday, a user
> > complained of a 7 minute wait changing between two open sessions on his
> > relatively new Windows PC and concerned persons are pointing at this CGI
> > system as being a possible culprit due to it having high %s when it's
> > running alone.
> >
> > I've tried to delay the notion of scrapping it and writing a PC program
> > by manually dropping the priority on those jobs to 8.  But...how can I
> > explain it using so much of the system?  What are the effects of this
> > type of job, compared to a full-bore interactive job chewing up 70% of
> > the system?
> >
> > Thanks!!
> --
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