Commit Graph

27 Commits

Author SHA1 Message Date
Richard van der Hoff bc496df192 report metrics on number of cache evictions 2018-02-05 15:34:01 +00:00
Richard van der Hoff ce236f8ac8 better exception logging in callbackmetrics
when we fail to render a metric, give a clue as to which metric it was
2018-01-18 11:30:49 +00:00
Richard van der Hoff 992018d1c0 mechanism to render metrics with alternative names 2018-01-15 17:04:39 +00:00
Richard van der Hoff 80fa610f9c Add some comments to metrics classes 2018-01-15 16:52:52 +00:00
Richard van der Hoff 19d274085f Make Counter render floats
Prometheus handles all metrics as floats, and sometimes we store non-integer
values in them (notably, durations in seconds), so let's render them as floats
too.

(Note that the standard client libraries also treat Counters as floats.)
2018-01-12 23:49:44 +00:00
Paul "LeoNerd" Evans b21b9dbc37 Callback metric values might not just be integers - allow floats 2016-10-19 15:05:15 +01:00
Erik Johnston 7c1a92274c Make psutil optional 2016-08-08 11:12:21 +01:00
Erik Johnston d36b1d849d Don't explode if we have no snapshots yet 2016-07-20 16:59:52 +01:00
Erik Johnston 66868119dc Add metrics for psutil derived memory usage 2016-07-20 16:00:21 +01:00
Erik Johnston 73c7112433 Change CacheMetrics to be quicker
We change it so that each cache has an individual CacheMetric, instead
of having one global CacheMetric. This means that when a cache tries to
increment a counter it does not need to go through so many indirections.
2016-06-03 11:26:52 +01:00
Matthew Hodgson 6c28ac260c copyrights 2016-01-07 04:26:29 +00:00
Paul "LeoNerd" Evans 128cf2daf7 Appease pep8 2015-03-12 16:24:51 +00:00
Paul "LeoNerd" Evans c1cdd7954d Add an .inc_by() method to CounterMetric; implement DistributionMetric a neater way 2015-03-12 16:24:51 +00:00
Paul "LeoNerd" Evans f1fbe3e09f Rename TimerMetric to DistributionMetric; as it could count more than just time 2015-03-12 16:24:51 +00:00
Paul "LeoNerd" Evans cbc0406be8 Export CacheMetric as hits+total, rather than hits+misses, as it's easier to derive hit ratio from that 2015-03-12 16:24:51 +00:00
Paul "LeoNerd" Evans 0e847540c3 Prometheus needs "escaped" label values 2015-03-12 16:24:51 +00:00
Paul "LeoNerd" Evans 22b37b75db Kill unused CounterMetric.fetch() method 2015-03-12 16:24:51 +00:00
Paul "LeoNerd" Evans b3a0179d64 Bugfix to rendering output of vectored TimerMetrics 2015-03-12 16:24:51 +00:00
Paul "LeoNerd" Evans f9478e475b Rename Metrics' "keys" to "labels" 2015-03-12 16:24:51 +00:00
Paul "LeoNerd" Evans a99d6edc05 Neater implementation of metric render methods by pulling out 'render' as a base method that calls self.render_item 2015-03-12 16:24:50 +00:00
Paul "LeoNerd" Evans 72625f2f4d Initial hack at a TimerMetric; for storing counts + duration accumulators 2015-03-12 16:24:50 +00:00
Paul "LeoNerd" Evans 23ab0c68c2 Implement vector CallbackMetrics 2015-03-12 16:24:50 +00:00
Paul "LeoNerd" Evans 849300bc73 Neater introspection methods on BaseMetric so that subclasses don't need to touch self.keys directly 2015-03-12 16:24:50 +00:00
Paul "LeoNerd" Evans 8664599af7 Rename CacheCounterMetric to just CacheMetric; add a CallbackMetric component to give the size of the cache 2015-03-12 16:24:50 +00:00
Paul "LeoNerd" Evans d8caa5454d Initial attempt at a scalar callback-based metric to give instantaneous snapshot gauges 2015-03-12 16:24:50 +00:00
Paul "LeoNerd" Evans ce8b5769f7 Create the concept of a cachecounter metric; generating two counters specific to caches 2015-03-12 16:24:50 +00:00
Paul "LeoNerd" Evans e7420a3bef Initial tiny attempt at (vectorable) counter metrics 2015-03-12 16:24:50 +00:00