Sequential vs Random IO

$  go run main.go

buf_size,random (ms), sequential (ms)
1KB,9410,3474
2KB,3747,1922
4KB,1902,1093
8KB,1105,622
16KB,673,404
32KB,443,299
64KB,340,243
128KB,254,213
256KB,237,198
512KB,215,192
1024KB,214,193