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Filip Petkovski 583f3e587c Optimize histogram iterators (#13340) ... Optimize histogram iterators Histogram iterators allocate new objects in the AtHistogram and AtFloatHistogram methods, which makes calculating rates over long ranges expensive. In #13215 we allowed an existing object to be reused when converting an integer histogram to a float histogram. This commit follows the same idea and allows injecting an existing object in the AtHistogram and AtFloatHistogram methods. When the injected value is nil, iterators allocate new histograms, otherwise they populate and return the injected object. The commit also adds a CopyTo method to Histogram and FloatHistogram which is used in the BufferedIterator to overwrite items in the ring instead of making new copies. Note that a specialized HPoint pool is needed for all of this to work (`matrixSelectorHPool`). --------- Signed-off-by: Filip Petkovski <filip.petkovsky@gmail.com> Co-authored-by: George Krajcsovits <krajorama@users.noreply.github.com>		2 years ago
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fixtures	…
alerting.go	ci(lint): enable godot; append dot at the end of comments	3 years ago
alerting_test.go	golangci-lint: enable testifylint linter (#13254)	2 years ago
group.go	Address PR feedback	3 years ago
manager.go	ci(lint): enable godot; append dot at the end of comments	3 years ago
manager_test.go	Optimize histogram iterators (#13340)	2 years ago
origin.go	…
origin_test.go	lint: Adjust to the lint warnings raised by current versions of golint-ci	3 years ago
recording.go	…
recording_test.go	promql: allow tests to be imported (#12050)	3 years ago
rule.go	Refactoring manager.go into separate concerns	3 years ago