Hi Max,
The load is calculated by the script you specify to run using cms.perf
http://xrootd.org/doc/dev44/cms_config.htm#_Toc454223033
if you haven't specified it then only the file system loads are reported and
everything else is zero. We provide a sample script in the "utils" directory
of the source repo called XrdOlbMonPerf and it should work for any Linux
system. However, do verify as we normally don't update this script unless
someone complains and offers a solution.
Andy
-----Original Message-----
From: Fischer, Max (SCC)
Sent: Tuesday, October 18, 2016 2:45 AM
To: [log in to unmask]
Subject: empty usage statistics (for cms.sched)
Hi all,
I'm investigating some broken load balancing in one of our sub-clusters.
From a set of similar servers using a shared file system, about 1-2 show
considerably higher load (750 vs 30).
My attempt was to change `cms.sched` to prefer machines with low load, but
there was no effect from changing this policy.
After switching on logging of `cms.ping` [1] statistics, it turns out that
*all* load statistics from servers are reported as 0:
161018 11:32:09 25026 Node: f01-101-136-e.gridka.de load=0; cpu=0 net=0
inq=0 mem=0 pag=0 dsk=871483960 utl=49 shr=[100 24 0]
Do I have to adjust the configuration of server or manager to make this
work? The manager is running v4.3, the servers are running v4.3 and v4.4.
Cheers,
Max
[1] cms.ping docs
http://xrootd.org/doc/dev43/cms_config.htm#_Toc436250534
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