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Thank you Andy and Max for your replies, which have put me on the right track. I've tried to implent the perf directive using the supplied cms_monPerf utility by sticking at the end of our config: if exec cmsd # call preinstall script every minute cms.perf int 1m pgm /usr/share/xrootd/utils/cms_monPerf 60 fi Within the logs however I see a config warning I do not understand at all: " =====> cms.perf int 1m pgm /usr/share/xrootd/utils/cms_monPerf 60 The following paths are available to the redirector: w /cephfs/grid Config warning: metrics supplier specified without any scheduling metrics! ------ [log in to unmask] phase 1 server initialization completed. " And it does not appear that metrics are being fed to our manager host (although cms_monPerf is running on our servers). Looking in the logs we only have one instance of metric information arriving in our manager's cmsd.log, lines like: 230120 14:04:26 259335 Node: stor015.hec.lancs.ac.uk load=30; cpu=6 net=99 inq=45 mem=3 pag=0 dsk=2147483647 utl=74 shr=[100 26 0] ref=[10906 1721] These metrics were delivered once, about 10 minutes after the servers were restarted and we've not seen any mentions in the logs since. I'm not sure if this is a data point or just noise though. Data is still flowing to the xrootd servers though, in the round-robin fashion. My apologies if I'm missing something as equally straightforward as with my original mail, but I'd appreciate any pointers. Thanks again, and have a good weekend all, Matt ________________________________________ From: Fischer, Max (SCC) <[log in to unmask]> Sent: 20 January 2023 08:06 To: Doidge, Matt Cc: [log in to unmask] Subject: [External] Re: cmsd.sched not (noticeably) load balancing redirection This email originated outside the University. Check before clicking links or attachments. ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the XROOTD-L list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-L&A=1