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|
use std::fmt;
use std::time::Instant;
struct Struct {
data: [u8; 32],
}
impl fmt::Display for Struct {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{:?}", self.data)
}
}
fn main() {
// --------------------------------
println!("flexi_logger");
flexi_logger::Logger::try_with_str("off")
.unwrap()
.format(flexi_logger::detailed_format)
.start()
.unwrap();
// --------------------------------
// $> Set-Item -Path Env:RUST_LOG -Value "trace"
// println!("env_logger");
// env_logger::init();
// $> Set-Item -Path Env:RUST_LOG
// --------------------------------
let mut structs = Vec::new();
for i in 0..100 {
structs.push(Struct {
data: [i as u8; 32],
});
}
{
// With format
let start = Instant::now();
for s in &structs {
log::info!("{}", format!("{s}"));
}
eprintln!("with format: {:?}", start.elapsed()); // 2-7ms
}
{
// Plain logger
let start = Instant::now();
for s in &structs {
log::info!("{}", s);
}
eprintln!("plain: {:?}", start.elapsed()); // 17-26ms
}
}
|
