zolfa/tendermint - tendermint - Gitea: Git with a cup of tea

bft blockchain consensus consistency cryptocurrency cryptography db distributed-systems go

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copy events and pubsub packages from tmlibs Refs #847

6 years ago

Performance improvements for the event query API (#7319) Rework the implementation of event query parsing and execution to improve performance and reduce memory usage. Previous memory and CPU profiles of the pubsub service showed query processing as a significant hotspot. While we don't have evidence that this is visibly hurting users, fixing it is fairly easy and self-contained. Updates #6439. Typical benchmark results comparing the original implementation (PEG) with the reworked implementation (Custom): ``` TEST TIME/OP BYTES/OP ALLOCS/OP SPEEDUP MEM SAVING BenchmarkParsePEG-12 51716 ns 526832 27 BenchmarkParseCustom-12 2167 ns 4616 17 23.8x 99.1% BenchmarkMatchPEG-12 3086 ns 1097 22 BenchmarkMatchCustom-12 294.2 ns 64 3 10.5x 94.1% ``` Components: * Add a basic parsing benchmark. * Move the original query implementation to a subdirectory. * Add lexical scanner for Query expressions. * Add a parser for Query expressions. * Implement query compiler. * Add test cases based on OpenAPI examples. * Add MustCompile to replace the original MustParse, and update usage.

3 years ago

copy events and pubsub packages from tmlibs Refs #847

6 years ago

test event bus Refs #693

6 years ago

copy events and pubsub packages from tmlibs Refs #847

6 years ago

gen_query_parser:
	go generate .

fuzzy_test:
	go get -u -v github.com/dvyukov/go-fuzz/go-fuzz
	go get -u -v github.com/dvyukov/go-fuzz/go-fuzz-build
	go-fuzz-build github.com/tendermint/tendermint/libs/pubsub/query/fuzz_test
	go-fuzz -bin=./fuzz_test-fuzz.zip -workdir=./fuzz_test/output

.PHONY: gen_query_parser fuzzy_test