RAMdisk slower than disk?

Question

A python program I created is IO bounded. The majority of the time (over 90%) is spent in a single loop which repeats ~10,000 times. In this loop, ~100KB data is generated a

Answer 1

I had the same mind boggling experience, and after many tries I figured it out. When ramdisk is formatted as FAT32, then even though benchmarks shows high values, real world use is actually slower than NTFS formatted SSD. But NTFS formatted ramdisk is faster in real life than SSD.