Tuesday 22 July 2008

LHCb Tests

I have added LHCb tests to the collection. These are actually SAM tests tailored to LHCb. They are kept separate from the normal (Ops Critical) SAM tests to avoid distorting the availability/reliability statistics. See http://pprc.qmul.ac.uk/~lloyd/gridpp/lhcb_samtest.html.

Monday 21 July 2008

Local problems

The bad news: The raid array I store my outputs and log files on developed an error over the weekend. It is being rebuilt now but may take some time before it comes back.


The good news: I've instigated a 'heartbeat' system so that if all the tests stop running and the pages look green there is something to tell you that in fact it hasn't been updated for many hours.

Wednesday 2 July 2008

Network Tests

I have introduced some network tests. Test jobs are sent to every UK site once an hour which attempt to copy a number of differently sized test files (1MB, 5MB, 10MB, 50MB and 100MB) from the Storage Element at each of the sites. The transfer times are then used to calculate the average throughput in MB/s. The results are averaged over the last 24 hours to produce a matrix of site to site transfer throughputs. There is an average over the whole matrix on the main UK Grid page. See http://pprc.qmul.ac.uk/~lloyd/gridpp/nettest.html.