html5ever: PGO instrumented compared to Release

gistfile1.txt

taskset -c 0 cargo pgo bench -- --workspace --all-features

     Running benches/html5ever.rs (x86_64-unknown-linux-gnu/release/deps/html5ever-12e473d0184d56e7)
Benchmarking html tokenizing lipsum.html
Benchmarking html tokenizing lipsum.html: Warming up for 3.0000 s
Benchmarking html tokenizing lipsum.html: Collecting 100 samples in estimated 5.0015 s (343k iterations)
Benchmarking html tokenizing lipsum.html: Analyzing
html tokenizing lipsum.html
                        time:   [14.419 µs 14.436 µs 14.452 µs]
                        change: [+65.374% +66.308% +67.018%] (p = 0.00 < 0.05)
                        Performance has regressed.
Found 1 outliers among 100 measurements (1.00%)
  1 (1.00%) high severe

Benchmarking html tokenizing lipsum-zh.html
Benchmarking html tokenizing lipsum-zh.html: Warming up for 3.0000 s
Benchmarking html tokenizing lipsum-zh.html: Collecting 100 samples in estimated 5.0499 s (454k iterations)
Benchmarking html tokenizing lipsum-zh.html: Analyzing
html tokenizing lipsum-zh.html
                        time:   [11.161 µs 11.167 µs 11.172 µs]
                        change: [+71.432% +71.845% +72.228%] (p = 0.00 < 0.05)
                        Performance has regressed.
Found 4 outliers among 100 measurements (4.00%)
  3 (3.00%) high mild
  1 (1.00%) high severe

Benchmarking html tokenizing medium-fragment.html
Benchmarking html tokenizing medium-fragment.html: Warming up for 3.0000 s
Benchmarking html tokenizing medium-fragment.html: Collecting 100 samples in estimated 5.0694 s (86k iterations)
Benchmarking html tokenizing medium-fragment.html: Analyzing
html tokenizing medium-fragment.html
                        time:   [59.155 µs 59.273 µs 59.470 µs]
                        change: [+47.166% +47.347% +47.556%] (p = 0.00 < 0.05)
                        Performance has regressed.
Found 15 outliers among 100 measurements (15.00%)
  5 (5.00%) high mild
  10 (10.00%) high severe

Benchmarking html tokenizing small-fragment.html
Benchmarking html tokenizing small-fragment.html: Warming up for 3.0000 s
Benchmarking html tokenizing small-fragment.html: Collecting 100 samples in estimated 5.0064 s (884k iterations)
Benchmarking html tokenizing small-fragment.html: Analyzing
html tokenizing small-fragment.html
                        time:   [5.6949 µs 5.6986 µs 5.7023 µs]
                        change: [+50.182% +50.323% +50.463%] (p = 0.00 < 0.05)
                        Performance has regressed.
Found 10 outliers among 100 measurements (10.00%)
  6 (6.00%) high mild
  4 (4.00%) high severe

Benchmarking html tokenizing tiny-fragment.html
Benchmarking html tokenizing tiny-fragment.html: Warming up for 3.0000 s
Benchmarking html tokenizing tiny-fragment.html: Collecting 100 samples in estimated 5.0026 s (8.5M iterations)
Benchmarking html tokenizing tiny-fragment.html: Analyzing
html tokenizing tiny-fragment.html
                        time:   [590.01 ns 590.34 ns 590.71 ns]
                        change: [+51.976% +52.117% +52.260%] (p = 0.00 < 0.05)
                        Performance has regressed.
Found 5 outliers among 100 measurements (5.00%)
  4 (4.00%) high mild
  1 (1.00%) high severe

Benchmarking html tokenizing strong.html
Benchmarking html tokenizing strong.html: Warming up for 3.0000 s
Benchmarking html tokenizing strong.html: Collecting 100 samples in estimated 5.1144 s (126k iterations)
Benchmarking html tokenizing strong.html: Analyzing
html tokenizing strong.html
                        time:   [40.739 µs 40.766 µs 40.797 µs]
                        change: [+48.941% +49.079% +49.214%] (p = 0.00 < 0.05)
                        Performance has regressed.
Found 11 outliers among 100 measurements (11.00%)
  8 (8.00%) high mild
  3 (3.00%) high severe

     Running unittests lib.rs (x86_64-unknown-linux-gnu/release/deps/markup5ever-ac843730594aaa0c)

running 6 tests
test interface::tests::ns_macro ... ignored
test util::buffer_queue::test::can_eat ... ignored
test util::buffer_queue::test::can_pop_except_set ... ignored
test util::buffer_queue::test::can_unconsume ... ignored
test util::buffer_queue::test::smoke_test ... ignored
test util::smallcharset::test::nonmember_prefix ... ignored

test result: ok. 0 passed; 0 failed; 6 ignored; 0 measured; 0 filtered out; finished in 0.00s

     Running unittests lib.rs (x86_64-unknown-linux-gnu/release/deps/markup5ever_rcdom-232871f93bb23f48)

running 0 tests

test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s

     Running unittests src/lib.rs (x86_64-unknown-linux-gnu/release/deps/xml5ever-ac2136d9271b5ebe)

running 2 tests
test tokenizer::test::simple_namespace ... ignored
test tokenizer::test::wrong_namespaces ... ignored

test result: ok. 0 passed; 0 failed; 2 ignored; 0 measured; 0 filtered out; finished in 0.00s

     Running benches/xml5ever.rs (x86_64-unknown-linux-gnu/release/deps/xml5ever-8ef3f8beda31ad7b)
Benchmarking xml tokenizing strong.xml
Benchmarking xml tokenizing strong.xml: Warming up for 3.0000 s
Benchmarking xml tokenizing strong.xml: Collecting 100 samples in estimated 5.0629 s (116k iterations)
Benchmarking xml tokenizing strong.xml: Analyzing
xml tokenizing strong.xml
                        time:   [43.409 µs 43.439 µs 43.473 µs]
                        change: [+49.537% +49.665% +49.782%] (p = 0.00 < 0.05)
                        Performance has regressed.
Found 4 outliers among 100 measurements (4.00%)
  2 (2.00%) high mild
  2 (2.00%) high severe