test: Pass eventname correctly to avoid string alloc in perf tests

Author: cijothomas

opentelemetry-sdk/benches/log_exporter.rs

@@ -147,7 +147,7 @@ fn exporter_without_future(c: &mut Criterion) {
     let logger = provider.logger("benchmark");
 
     c.bench_function("LogExporterWithoutFuture", |b| {
-        b.iter(|| {
+        b.iter(|| { 
             let mut log_record = logger.create_log_record();
             let now = now();
             log_record.set_observed_timestamp(now);

stress/src/logs.rs

@@ -10,7 +10,7 @@
 
     Hardware: Apple M4 Pro
     Total Number of Cores:	14 (10 performance and 4 efficiency)
-    ~40 M/sec
+    ~50 M/sec
     ~1.1 B/sec (when disabled)
 */
 
@@ -88,7 +88,7 @@ fn main() {
 
 fn test_log() {
     error!(
-        name = "CheckoutFailed",
+        name : "CheckoutFailed",
         book_id = "12345",
         book_title = "Rust Programming Adventures",
         message = "Unable to process checkout."