FireAllRules response time increase on date constraint-intensive rulesets with executable model ----------------------------------------------------------------------------------------------- Key: DROOLS-6043 URL: https://issues.redhat.com/browse/DROOLS-6043 Project: Drools Issue Type: Bug Components: core engine Affects Versions: 7.49.0.Final Reporter: Matteo Casalino Assignee: Mario Fusco Priority: Major Attachments: fg-Drools_7_49_0_drl.svg, fg-Drools_7_49_0_exec_model.svg, perf-regression-date-constraints.zip We notice a significant performance regression on firing rules which make intensive use of constraints on dates with executable model. From a quick look at the flame graphs, it looks like plenty of CPU is spent in java/time/LocalDate.parse and java/util/GregorianCalendar.from, when executable model is used. The attached benchmark shows a 600%+ increase of response time when running with executable model instead of drl. DRL: {noformat} Benchmark (inputFacts) (kieBaseName) Mode Cnt Score Error Units DroolsFireJMHBench.testOneFactAgainsAllRules src/main/resources/facts.json testKieBase sample 2728 18.340 ▒ 0.240 ms/op DroolsFireJMHBench.testOneFactAgainsAllRules:testOneFactAgainsAllRules▒p0.00 src/main/resources/facts.json testKieBase sample 14.598 ms/op DroolsFireJMHBench.testOneFactAgainsAllRules:testOneFactAgainsAllRules▒p0.50 src/main/resources/facts.json testKieBase sample 17.105 ms/op DroolsFireJMHBench.testOneFactAgainsAllRules:testOneFactAgainsAllRules▒p0.90 src/main/resources/facts.json testKieBase sample 23.170 ms/op DroolsFireJMHBench.testOneFactAgainsAllRules:testOneFactAgainsAllRules▒p0.95 src/main/resources/facts.json testKieBase sample 26.116 ms/op DroolsFireJMHBench.testOneFactAgainsAllRules:testOneFactAgainsAllRules▒p0.99 src/main/resources/facts.json testKieBase sample 32.920 ms/op DroolsFireJMHBench.testOneFactAgainsAllRules:testOneFactAgainsAllRules▒p0.999 src/main/resources/facts.json testKieBase sample 46.064 ms/op DroolsFireJMHBench.testOneFactAgainsAllRules:testOneFactAgainsAllRules▒p0.9999 src/main/resources/facts.json testKieBase sample 55.443 ms/op DroolsFireJMHBench.testOneFactAgainsAllRules:testOneFactAgainsAllRules▒p1.00 src/main/resources/facts.json testKieBase sample 55.443 ms/op {noformat} Executable model: {noformat} Benchmark (inputFacts) (kieBaseName) Mode Cnt Score Error Units DroolsFireJMHBench.testOneFactAgainsAllRules src/main/resources/facts.json testKieBase sample 363 138.380 ± 4.116 ms/op DroolsFireJMHBench.testOneFactAgainsAllRules:testOneFactAgainsAllRules·p0.00 src/main/resources/facts.json testKieBase sample 116.523 ms/op DroolsFireJMHBench.testOneFactAgainsAllRules:testOneFactAgainsAllRules·p0.50 src/main/resources/facts.json testKieBase sample 131.072 ms/op DroolsFireJMHBench.testOneFactAgainsAllRules:testOneFactAgainsAllRules·p0.90 src/main/resources/facts.json testKieBase sample 160.956 ms/op DroolsFireJMHBench.testOneFactAgainsAllRules:testOneFactAgainsAllRules·p0.95 src/main/resources/facts.json testKieBase sample 173.172 ms/op DroolsFireJMHBench.testOneFactAgainsAllRules:testOneFactAgainsAllRules·p0.99 src/main/resources/facts.json testKieBase sample 271.602 ms/op DroolsFireJMHBench.testOneFactAgainsAllRules:testOneFactAgainsAllRules·p0.999 src/main/resources/facts.json testKieBase sample 313.000 ms/op DroolsFireJMHBench.testOneFactAgainsAllRules:testOneFactAgainsAllRules·p0.9999 src/main/resources/facts.json testKieBase sample 313.000 ms/op DroolsFireJMHBench.testOneFactAgainsAllRules:testOneFactAgainsAllRules·p1.00 src/main/resources/facts.json testKieBase sample 313.000 ms/op {noformat}