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Performance Metrics - 2012

Percentage of time that a request for a page is returned within three seconds from on campus (target: 99.9%)

Month %
Jan '12 100%
Feb '12 100%
Mar '12 99.99%
Apr '12 99.99%
May '12 99.97%
Jun '12 99.98%
Jul '12 99.95%
Aug '12 99.998%
Sep '12 99.99%
Oct '12 99.95%
Nov '12 99.95%
Dec '12 99.999%

Availability off-campus, as measured by Pingdom.com (30 second timeout, from at least 2 out of 10 locations ) (no target set)

Month %
Jan '12 100%
Feb '12 100%
Mar '12 100%
Apr '12 99.98%
May '12 99.18%*
Jun '12 99.91%
Jul '12 99.97%
Aug '12 99.76%
Sep '12 99.77%
Oct '12 99.65%
Nov '12 99.91%
Dec '12 99.98%

* This downtime was caused by a failed JANET link between North America and the UK, which caused UK Higher Education websites to be unavailable sporadically from North America.

Percentage of time that a request for a websignon UserLookup request is returned within 5 seconds from within our datacenter* (target: 99.5%)

Month %
Jan '12 100%
Feb '12 100%
Mar '12 99.99%
Apr '12 100%
May '12 100%
Jun '12 99.996%
Jul '12 99.97%
Aug '12 100%
Sep '12 100%
Oct '12 100%
Nov '12 100%
Dec '12 100%

* This might seem contrived. But 5 seconds is the threshold at which other applications will time-out a request to websignon, and since the vast majority of WSOS-enabled apps live in our datacentres, that's where we should measure from.