优化性能和速度

Cargo.toml

@@ -1,7 +1,7 @@
 [workspace]
 members = [
     "nbt-test",
-    # "shen-nbt1",  # EOL!
+    "shen-nbt1",  # EOL!
     "shen-nbt2",
     "shen-nbt3",
     "shen-nbt4", 

README.md

@@ -36,45 +36,41 @@ writen in rust!
 ```text
 ❯ cargo run --release -- .\test-data\test-zip
 
+Hello, nbt!
 ============ small test ============
 === nbt v1 ===
-time: 1.2222941s  speed: 1263.1984397208494 (bytes/sec)
+time: 872.8818ms
-1.233592226289892 (kb/sec)
+speed: 1768.853469049303 (bytes/s)
-0.0012046799084862226 (mb/sec)
+1.72739596586846 (KB/s)
-1.1764452231310768e-6 (gb/sec)
-10 5
-Level
 === nbt v2 ===
-time: 269.1µs  speed: 5737643.9985135645 (bytes/sec)
+time: 33.9µs
-5603.167967298403 (kb/sec)
+speed: 45545722.71386431 (bytes/s)
-5.4718437180648465 (mb/sec)
+44478.24483775812 (KB/s)
-0.005343597380922702 (gb/sec)
+43.43578597437316 (MB/s)
 === nbt v3 ===
-time: 58µs  speed: 26620689.655172415 (bytes/sec)
+time: 54.7µs
-25996.76724137931 (kb/sec)
+speed: 28226691.04204753 (bytes/s)
-25.387468009159484 (mb/sec)
+27565.12797074954 (KB/s)
-0.02479244922769481 (gb/sec)
+26.9190702839351 (MB/s)
-10 5
-Level
 === nbt v4 ===
-time: 211.7µs  speed: 7293339.631554086 (bytes/sec)
+time: 24.3µs
-7122.401983939537 (kb/sec)
+speed: 63539094.65020576 (bytes/s)
-6.955470687440954 (mb/sec)
+62049.897119341564 (KB/s)
-0.006792451843204057 (gb/sec)
+60.595602655606996 (MB/s)
 === nbt v5 ===
-time: 34.6µs  speed: 44624277.456647396 (bytes/sec)
+time: 23.7µs
-43578.39595375722 (kb/sec)
+speed: 65147679.32489452 (bytes/s)
-42.55702729859104 (mb/sec)
+63620.7805907173 (KB/s)
-0.04155959697128031 (gb/sec)
+62.129668545622366 (MB/s)
 === fastnbt ===
-time: 37.7µs  speed: 40954907.161803715 (bytes/sec)
+time: 28.9µs
-39995.02652519894 (kb/sec)
+speed: 53425605.536332175 (bytes/s)
-39.05764309101459 (mb/sec)
+52173.44290657439 (KB/s)
-0.038142229581068936 (gb/sec)
+50.95062783845155 (MB/s)
 ============ cli test ============
 === shen nbt 5 ===
-time: 2.2960054s  speed: 2509544103.424147 (bytes/sec)
+time: 2.2855815sspeed: 2520989434.4174557 (bytes/s)
-2450726.6635001437 (kb/sec)
+2461903.7445482966 (KB/s)
-2393.287757324359 (mb/sec)
+2404.202875535446 (MB/s)
-2.3371950755120694 (gb/sec)
+2.347854370640084 (GB/s)
 ```

nbt-test/src/main.rs

@@ -116,24 +116,32 @@ fn big_read_test() {
     read_test(data.to_vec());
 }
 
+pub fn print_speed(speed: f64) {
+    println!("speed: {} (bytes/s)", speed);
+    let speeds = vec![
+        speed / 1024.0,
+        speed / 1024.0 / 1024.0,
+        speed / 1024.0 / 1024.0 / 1024.0,
+        speed / 1024.0 / 1024.0 / 1024.0 / 1024.0,
+    ];
+    // 只输出 > 1024 的
+    for (i, speed) in speeds.iter().enumerate() {
+        if *speed > 1.0 {
+            println!("{:?} ({}/s)", speed, ["KB", "MB", "GB", "TB"][i]);
+        }
+    }
+}
+
 macro_rules! test_lib {
     ($func: block, $name: expr, $len: expr) => {
-        std::thread::sleep(std::time::Duration::from_secs(1));
+        std::thread::sleep(std::time::Duration::from_micros(100));
         let start_time = std::time::Instant::now();
         $func
         let end_time = std::time::Instant::now();
         println!("=== {} ===", $name);
-        print!("time: {:?}", end_time - start_time);
+        println!("time: {:?}", end_time - start_time);
-        println!("  speed: {:?} (bytes/sec)", $len as f64 / (end_time - start_time).as_secs_f64());
+        let raw_speed = $len as f64 / (end_time - start_time).as_secs_f64();
-        println!("{:?} (kb/sec)", $len as f64 / (end_time - start_time).as_secs_f64() / 1024.0);
+        print_speed(raw_speed);
-        println!(
-            "{:?} (mb/sec)",
-            $len as f64 / (end_time - start_time).as_secs_f64() / 1024.0 / 1024.0
-        );
-        println!(
-            "{:?} (gb/sec)",
-            $len as f64 / (end_time - start_time).as_secs_f64() / 1024.0 / 1024.0 / 1024.0
-        );
         #[cfg(feature = "core_debug")]
         println!("nbt_data: {:#?}", nbt_data);
     };
@@ -252,16 +260,8 @@ fn cli_read_test() {
         let end_time = std::time::Instant::now();
         println!("=== shen nbt 5 ===");
         print!("time: {:?}", end_time - start_time);
-        println!("  speed: {:?} (bytes/sec)", len as f64 / (end_time - start_time).as_secs_f64());
+        let raw_speed = len as f64 / (end_time - start_time).as_secs_f64();
-        println!("{:?} (kb/sec)", len as f64 / (end_time - start_time).as_secs_f64() / 1024.0);
+        print_speed(raw_speed);
-        println!(
-            "{:?} (mb/sec)",
-            len as f64 / (end_time - start_time).as_secs_f64() / 1024.0 / 1024.0
-        );
-        println!(
-            "{:?} (gb/sec)",
-            len as f64 / (end_time - start_time).as_secs_f64() / 1024.0 / 1024.0 / 1024.0
-        );
         #[cfg(feature = "core_debug")]
         println!("nbt_data: {:#?}", nbt_data);
         // println!("nbt len {}", nbt_data.as_byte().is_some());

shen-nbt2/src/lib.rs

@@ -473,9 +473,7 @@ impl<'value> Value<'value> {
         let mut nbt_data = NbtData::new(data);
         let _type_id = nbt_data.read_byte();
         let _name_len = nbt_data.read_short();
-        println!("{} {}", _type_id, _name_len);
         let name = String::from_utf8(nbt_data.read_bytes(_name_len as usize)).unwrap();
-        println!("{}", name);
         Value::read_compound(&mut nbt_data)
     }
 }

shen-nbt3/src/lib.rs

@@ -429,9 +429,7 @@ impl<'value> Value<'value> {
         let mut nbt_data = NbtData::new(&mut data[..]);
         let _type_id = nbt_data.read_byte();
         let _name_len = nbt_data.read_short();
-        // println!("{} {}", _type_id, _name_len);
         let _name = String::from_utf8(nbt_data.read_bytes(_name_len as usize)).unwrap();
-        // println!("{}", _name);
         Value::read_compound(&mut nbt_data)
     }
 }

shen-nbt4/src/lib.rs

@@ -468,9 +468,7 @@ impl<'value> Value<'value> {
         let mut nbt_data = NbtData::new(data);
         let _type_id = nbt_data.read_byte();
         let _name_len = nbt_data.read_short();
-        println!("{} {}", _type_id, _name_len);
         let name = String::from_utf8(nbt_data.read_bytes(_name_len as usize)).unwrap();
-        println!("{}", name);
         Value::read_compound(&mut nbt_data)
     }
 }