4 ms·
This. Last magnetic laptop drive I had was measuring under 10MB per second with small random reads. On a fragged old OS install it’s unbelievably impactful. Bac
by amichal 7y ago
This. Last magnetic laptop drive I had was measuring under 10MB per second with small random reads. On a fragged old OS install it’s unbelievably impactful. Back in windows 98 days simply copying my data to a second partiton, erasing and reinstalling the OS and copying ALL the data back would get me back to like new for a few months. When a drive is nearly full “defrag” is not that successful. Similar things happen with nearly full SSDs via other mechanisms
- wtallis 7y agoIf you were getting multiple MB/s, then your random reads weren't particularly small. A 1TB 3.5" 7200 RPM hard drive gives only 0.25–0.6MB/s for 4kB random reads depending on how much it is short stroked.