12 Commits (8066de91ca26bbf268e28283aef1e6cf78eb5c17)

Author	SHA1	Message	Date
beorn7	836f1db04c	Improve MetricsForLabelMatchers ... WIP: This needs more tests. It now gets a from and through value, which it may opportunistically use to optimize the retrieval. With possible future range indices, this could be used in a very efficient way. This change merely applies some easy checks, which should nevertheless solve the use case of heavy rule evaluations on servers with a lot of series churn. Idea is the following: - Only archive series that are at least as old as the headChunkTimeout (which was already extremely unlikely to happen). - Then maintain a high watermark for the last archival, i.e. no archived series has a sample more recent than that watermark. - Any query that doesn't reach to a time before that watermark doesn't have to touch the archive index at all. (A production server at Soundcloud with the aforementioned series churn and heavy rule evaluations spends 50% of its CPU time in archive index lookups. Since rule evaluations usually only touch very recent values, most of those lookup should disappear with this change.) - Federation with a very broad label matcher will profit from this, too. As a byproduct, the un-needed MetricForFingerprint method was removed from the Storage interface.	9 years ago
beorn7	1e13f89039	Return SamplePair istead of *SamplePair consistently ... Formalize ZeroSamplePair as return value for non-existing samples. Change LastSamplePairForFingerprint to return a SamplePair (and not a pointer to it), which saves allocations in a potentially extremely frequent call.	9 years ago
Fabian Reinartz	b35e25a082	Don't federate stale samples	9 years ago
Julius Volz	dac26cef71	Rename global "labels" config option to "external_labels".	9 years ago
beorn7	ca63c05b4e	Fix creation of protobuf fields	9 years ago
Fabian Reinartz	9bbd9264e2	Add global labels to federation	9 years ago
Julius Volz	995d3b831d	Fix most golint warnings. ... This is with `golint -min_confidence=0.5`. I left several lint warnings untouched because they were either incorrect or I felt it was better not to change them at the moment.	9 years ago
Fabian Reinartz	d6b8da8d43	Switch promql types to common/model	9 years ago
Fabian Reinartz	d6d88f8950	Add missing license headers	9 years ago
Fabian Reinartz	47aa0d536c	Use common/expfmt in federation	9 years ago
Fabian Reinartz	306e8468a0	Switch from client_golang/model to common/model	9 years ago
Fabian Reinartz	39a8254963	web: add basic federation support. ... This commit adds a federation handler on /federate. It accepts `match[]` query parameters containing vector selectors. Their intersection determines the in-memory metrics that are returned in the same way as the /metrics endpoint does (modulo sorting).	10 years ago