Re: [Condor-users] PASSWD_CACHE_REFRESH in 6.9.4?

[Dan Bradley <dan@xxxxxxxxxxxx>]

For 6.9.4, you should not have to set any of the config knobs mentioned 
below.  On very busy submit machines, I have found that with 6.9.4 (and 
all previous versions), it is advisable to set 
SHADOW_RENICE_INCREMENT=0.  This will be the default in 6.9.5.

--Dan

Stuart Anderson wrote:
> Dan,
> 	Are any of the following 6.8 examples on the large condor pool tuning
> page still need in 6.9.4, i.e.,
>
> Example Configuration Tuning for 6.8
>
> # Increase various timeouts and housecleaning intervals:
> SHADOW_TIMEOUT_MULTIPLIER=4
> STARTER_TIMEOUT_MULTIPLIER=4
> TOOL_TIMEOUT_MULTIPLIER=4
> SCHEDD_MIN_INTERVAL=80
> PERIODIC_EXPR_INTERVAL=400
>
>
> Thanks.
>
>
> On Wed, Oct 10, 2007 at 10:05:15AM -0500, Dan Bradley wrote:
>   
> > Actually, PASSWD_CACHE_REFRESH does not accept expressions.  It requires 
> > a plain integer.  The only change in semantics is that in 6.9.2, we 
> > added better validation of input.  Previously, 
> > PASSWD_CACHE_REFRESH=123+blahblah would silently result in a value of 
> > 123 being used.  In 6.9.2+, condor complains and falls back to the 
> > default value.
> >
> > Therefore, the advice that I added to the web page on administering 
> > large condor pools was incorrect.  Sorry about that!  I have corrected 
> > that.  Anyway, in 6.9.4, the randomization happens internally, so 
> > hopefully there is no need to worry about it.
> >
> > Here's the web page we are talking about, for others who are interested:
> >
> > http://www.cs.wisc.edu/condor/CondorWeek2007/large_condor_pools.html
> >
> > --Dan
> >
> > Steffen Grunewald wrote:
> >
> >     
> > > Has the semantics of PASSWD_CACHE_REFRESH changed between 6.9.3 and 6.9.4?
> > > I have been running some nodes with
> > > PASSWD_CACHE_REFRESH = 900 + $RANDOM_INTEGER(0,300)
> > > (the suggestion from the PCW2007 talk on large pools was
> > > PASSWD_CACHE_REFRESH = 300 + $RANDOM_CHOICE(0,10,20,30,40,50,60,70,80,90,100)
> > > but with a few hundreds of nodes I wanted to add more randomness)
> > > which caused no problems with 6.9.3, but 6.9.4 complains.
> > > Of course, with the randomness introduced internally, the random part is
> > > not necessary anymore...
> > > (Needless to say that arithmetic expressions in COndor still scare me.)
> > >
> > > Cheers,
> > > Steffen
> > >
> > >  
> > >
> > >       
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