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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>		10 months ago
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fuzz-data	textparse: Add fuzzing and fix bug caught	7 years ago
parser	promtool: allow setting multiple matchers to "promtool tsdb dump" command. (#13296)	10 months ago
testdata	promql: use natural sort in sort_by_label and sort_by_label_desc (#13411)	10 months ago
bench_test.go	Expand benchmark	11 months ago
engine.go	Optimize histogram iterators (#13340)	10 months ago
engine_test.go	Revert "Adding small test update for temp dir using t.TempDir (#13293)"	11 months ago
functions.go	Merge pull request #13267 from linasm/simplify-native-histogram-math	10 months ago
functions_test.go	golangci-lint: enable testifylint linter (#13254)	12 months ago
fuzz.go	remove obsolete build tag	10 months ago
fuzz_test.go	remove obsolete build tag	10 months ago
promql_test.go	sort_by_label: Switch to feature flag	1 year ago
quantile.go	PromQL: ignore small errors for bucketQuantile (#13153)	1 year ago
quantile_test.go	PromQL: ignore small errors for bucketQuantile (#13153)	1 year ago
query_logger.go	add Close for ActiveQueryTracker to close the file.	2 years ago
query_logger_test.go	golangci-lint: enable testifylint linter (#13254)	12 months ago
test.go	sort_by_label: Switch to feature flag	1 year ago
test_test.go	Add context argument to Querier.Select (#12660)	1 year ago
value.go	Optimize histogram iterators (#13340)	10 months ago
value_test.go	Shortcut `ContainsSameLabelset()` (#11000)	2 years ago