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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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testdata	promtool: allow setting multiple matchers to "promtool tsdb dump" command. (#13296)	2 years ago
analyze.go	Add analyze histograms command to promtool (#12331)	2 years ago
analyze_test.go	Add analyze histograms command to promtool (#12331)	2 years ago
archive.go	refactor (package cmd): move from github.com/pkg/errors to 'errors' and 'fmt' packages (#10733)	4 years ago
backfill.go	enable gocritic, unconvert and unused linters	3 years ago
backfill_test.go	golangci-lint: enable testifylint linter (#13254)	2 years ago
debug.go	refactor (package cmd): move from github.com/pkg/errors to 'errors' and 'fmt' packages (#10733)	4 years ago
main.go	Enhanced visibility for `promtool test rules` with JSON colored formatting (#13342)	2 years ago
main_test.go	golangci-lint: enable testifylint linter (#13254)	2 years ago
metrics.go	Add a header to count retried remote write requests (#12729)	2 years ago
query.go	Add analyze histograms command to promtool (#12331)	2 years ago
rules.go	Merge branch 'main' into linter/nilerr	3 years ago
rules_test.go	golangci-lint: enable testifylint linter (#13254)	2 years ago
sd.go	SD Managers taking over responsibility for registration of debug metrics (#13375)	2 years ago
sd_test.go	golangci-lint: enable testifylint linter (#13254)	2 years ago
tsdb.go	Optimize histogram iterators (#13340)	2 years ago
tsdb_test.go	promtool: allow setting multiple matchers to "promtool tsdb dump" command. (#13296)	2 years ago
unittest.go	Enhanced visibility for `promtool test rules` with JSON colored formatting (#13342)	2 years ago
unittest_test.go	Enhanced visibility for `promtool test rules` with JSON colored formatting (#13342)	2 years ago