comment

Signed-off-by: Robert Kruszewski <github@robertk.io>

Author: robert3005

vortex-buffer/benches/vortex_bitbuffer.rs

@@ -166,7 +166,9 @@ fn slice_arrow_buffer(bencher: Bencher, length: usize) {
 #[divan::bench(args = INPUT_SIZE)]
 fn true_count_vortex_buffer(bencher: Bencher, length: usize) {
     let buffer = BitBuffer::from_iter((0..length).map(true_count_pattern));
-    buffer.true_count();
+    // Preload cpuid flags, one slow run that does feature detection skews sampling thus leading to way too few runs when feature detection kicks in.
+    #[cfg(target_arch = "x86_64")]
+    let _ = is_x86_feature_detected!("avx2");
 
     bencher
         .with_inputs(|| &buffer)