Script Options parser performance tests single line

[tomuben]

Background

There are performance tests to compare the CTPG and legacy parser for a large number of lines, see
https://github.com/exasol/script-languages/blob/master/exaudfclient/base/javacontainer/test/cpp/javacontainer_perf_test.cc

We also should extend the test to create a dummy UDF with a huge single line, in order to compare performance between the CTPG based parser and legacy parser.

Acceptance Criteria

New test in https://github.com/exasol/script-languages/blob/master/exaudfclient/base/javacontainer/test/cpp/javacontainer_perf_test.cc with a huge single line UDF + results.

[tomuben]

Setup

a UDF with a single line with ca 50 Million words:

%jvmoption option1=abc;%jvmoption option2=def;class JVMOPTION_TEST_WITH_SPACE {static void run(ExaMetadata exa, ExaIterator ctx) throws Exception {somecode somecode <50 Mio repetions> }}

Result

Tests were executed with --config optimize

Ctpg based implementation

bazel test --config optimize //base/javacontainer/test:javacontainer-perf-test-ctpg-parser
...
//base/javacontainer/test:javacontainer-perf-test-ctpg-parser            PASSED in 5.6s

Legacy implementation

bazel test --config optimize //base/javacontainer/test:javacontainer-perf-test-legacy-parser
//base/javacontainer/test:javacontainer-perf-test-legacy-parser          PASSED in 2.3s

Summary

Ctpg based implementation takes ca 2.5x as long as legacy implementation

[tomuben]

For same test with only 5 Mio words both implementations take ca. 0.1s