Hi Maarten,
On Mon, 2012-12-17 at 14:14 +0100, Maarten Litmaath wrote:
> >> It's a pity that due to the other but, you cannot switch off glite_cream_load_monitor at all :(.
> >
> > you can - and in fact that's what we're doing at DESY-ZN. Simply set the
> > JOB_SUBMISSION_MANAGER_SCRIPT_PATH to /bin/true :
> >
> > <parameter name="JOB_SUBMISSION_MANAGER_SCRIPT_PATH" value="/bin/true" />
> >
> > Our CREAM runs very stable since then ...
>
> The load monitor was invented for a good reason: to protect your CE!
I'm aware of this, and yes - it's actually a nice feature! But the
chance to make your CE unavailable due to the badly chosen defaults in
this script is currently *much* higher than running your CE
"unprotected". This may of course change in future ...
> If its default values are too conservative, you can adjust them and
> possibly open a ticket for some values to be made more realistic,
> but beware they need to be safe for small sites with small HW.
Yes, but I currently don't have a "feeling" e.g. what are good values
for a "standard Tier2 CE" (e.g. maximum number of concurrent gridftp
connections). Maybe we find out some day and then this self-limiting
feature will be very useful.
Cheers,
Andreas
--
| Andreas Haupt | E-Mail: [log in to unmask]
| DESY Zeuthen | WWW: http://www-zeuthen.desy.de/~ahaupt
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