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Performance Metrics - 2013

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

Month %
Jan '13 99.99%
Feb '13 100%
Mar '13 99.94%
Apr '13 99.998%
May '13 99.967%
Jun '13 99.967%
Jul '13 100%
Aug '13 100%
Sep '13 99.965%
Oct '13 99.81%
Nov '13 99.786%
Dec '13 99.908%

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

Month %
Jan '13 99.21%
Feb '13 99.86%
Mar '13 99.94%
Apr '13 99.98%
May '13 99.92%
Jun '13 99.965%
Jul '13 100%
Aug '13 100%
Sep '13 100%
Oct '13 99.877%
Nov '13 99.686%
Dec '13 99.966%

* 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 '13 100%
Feb '13 99.991%
Mar '13 100%
Apr '13 100%
May '13 100%
Jun '13 99.985%
Jul '13 99.976%
Aug '13 99.996%
Sep '13 100%
Oct '13 99.814%
Nov '13 100%
Dec '13 100%

* 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.