Sysadmin • Benchmarking dd • fio • Direct I/O • Disk Throughput

Linux dd & fio Benchmark Generator

Construct safe sequential and random I/O benchmark commands using dd with direct kernel cache bypassing and industry-standard fio jobs.

Test File Path

Block Size (bs)

Block Count

Bypass OS RAM Cache (conv=fdatasync / oflag=direct) Auto-Remove Benchmark File Afterwards

Native Linux dd Command (1GB Sequential Write)

Enterprise fio Benchmark (Random 4K Mixed 75/25)