Add rxml to comparison and tweak benchmarks compile options

Cargo.toml

@@ -34,7 +34,7 @@ memchr = "2.1"
 # required, `dev-dependencies` are not used). `criterion` 0.6 has msrv = 1.80, so
 # we cannot check minimal versions with it. We allow to use `criterion` 0.4 for that
 # See https://github.com/rust-lang/cargo/issues/10958
-criterion = ">=0.4,<0.8"
+criterion = ">=0.4,<0.9"
 pretty_assertions = "1.4"
 regex = "1"
 # https://github.com/serde-rs/serde/issues/1904 is fixed since 1.0.206
@@ -47,6 +47,11 @@ tokio-test = "0.4"
 [lib]
 bench = false
 
+[profile.bench]
+# For better information from cargo flamegraph
+debug = true
+lto = true
+
 [[bench]]
 name = "microbenches"
 harness = false

compare/Cargo.toml

@@ -8,7 +8,7 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dev-dependencies]
-criterion = { version = "0.7", features = ["html_reports"] }
+criterion = { version = "0.8", features = ["html_reports"] }
 markup5ever = "0.36"
 # maybe_xml 0.11 regressed performance by x2, and because this was the fastest
 # XML parser, we keep benchmarking version 0.10 as well
@@ -17,6 +17,7 @@ maybe_xml = "0.11"
 quick-xml = { path = "..", features = ["serialize"] }
 rapid-xml = "0.2"
 rusty_xml = { version = "0.3", package = "RustyXML" }
+rxml = "0.13"
 serde-xml-rs = "0.8"
 xml_oxide = "0.3"
 xml-rs = "1.0"
@@ -35,3 +36,8 @@ harness = false
 [[bench]]
 name = "serde"
 harness = false
+
+[profile.bench]
+# For better information from cargo flamegraph
+debug = true
+lto = true

compare/benches/low-level.rs

@@ -180,6 +180,42 @@ fn low_level_comparison(c: &mut Criterion) {
             },
         );
 
+        group.bench_with_input(BenchmarkId::new("rxml:borrowed", filename), *data, |b, input| {
+            use rxml::{Event, Parser, Parse};
+
+            b.iter(|| {
+                let mut doc = input.as_bytes();
+                let mut p = Parser::new();
+                let mut count = black_box(0);
+                while doc.len() > 0 {
+                    // true = doc contains the entire document
+                    match p.parse(&mut doc, true).unwrap() {
+                        Some(Event::StartElement(..)) => count += 1,
+                        None => break,
+                        _ => (),
+                    }
+                }
+                assert_eq!(count, total_tags, "Overall tag count in {}", filename);
+            })
+        });
+
+        group.bench_with_input(BenchmarkId::new("rxml:buffered", filename), *data, |b, input| {
+            use rxml::{as_eof_flag, Event, Reader};
+            use std::io::BufReader;
+
+            b.iter(|| {
+                let reader = BufReader::new(input.as_bytes());
+                let mut reader = Reader::new(reader);
+                let mut count = black_box(0);
+                let result = as_eof_flag(reader.read_all(|event| match event {
+                    Event::StartElement(..) => count += 1,
+                    _ => (),
+                }));
+                assert_eq!(result.unwrap(), true);  // true indicates eof
+                assert_eq!(count, total_tags, "Overall tag count in {}", filename);
+            })
+        });
+
         group.bench_with_input(BenchmarkId::new("RustyXml", filename), *data, |b, input| {
             use rusty_xml::{Event, Parser};