* Use a simple counter for sampler duration instead of a histogram.
* Use a counter to collect GC time.
* Remove unused objects metric.
* Cleanup metric names to match Prometheus conventions.
* Prefix generic GC stats with `gc_stat`.
* Include worker label on memory and file descriptor metrics.
In MR https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/15834 we
removed use of the data produced by the Allocations Gem. However, we
never removed the code that just enables tracking of allocations. In
this commit we remove all remaining traces of this Gem.
There seem to be a lot of cases where the suffix of an action (e.g.
".html") is set to bogus data, such as "*/*" or entire URLs. This can
increase cardinality of our metrics, and isn't very useful for
monitoring and filtering. To work around this, we enforce a whitelist
containing a few suffixes we actually care about. Suffixes not supported
will be grouped under the action without a suffix. This means that a
request to "FooController#bar.jpeg" will be assigned to
"FooController#bar".
Certain controllers (e.g. Doorkeeper::TokensController) don't expose the
method "request_format". This commit changes
Gitlab::Metrics::WebTransaction so we don't rely on this method, instead
using the underlying code this method uses.
Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/46412
The method "content_type" on a controller does not always return the
correct content type. On the other hand, the method "request_format"
does _and_ immediately returns a Symbol (e.g. :json) instead of a
mime-type name (e.g. application/json). With these changes metrics
should again report their action names correctly.
Fixes https://gitlab.com/gitlab-com/infrastructure/issues/3499
The Sidekiq exporter logs were mixing with the normal Sidekiq logs. In order
to support structured logging in Sidekiq, we either need to split this data
out or convert the exporter to produce structured logs. Since Sidekiq job
processing is fundamentally different information from Web server traffic,
it seems cleaner to move the metrics traffic into a separate file, where they
can be parsed by a different filter if needed.
Relates to #20060
Reduce cardinality of some of GitLab's Prometheus metrics and fix observed duration reporting.
Closes#41045
See merge request gitlab-org/gitlab-ce!15881
i.e.
Using compare and swap we update the expires_at value.
The thread that actually is able to update this value will also set
the cache holding method_call enabled state
On GitLab.com, InfluxSampler#sample_objects appears to take 1.2 s or so to
iterate through 1059 objects. This had led to delays of a couple hundred
milliseconds in processing in the main thread. Remove this code since it's not
really being used.
Closesgitlab-com/infrastructure#3250
Mark Chao
Ben Kochie
Stan Hu
Yorick Peterse
Pawel Chojnacki
Douwe Maan
micael.bergeron