A no-fills, quick C util to test system write performance. Don't stare directly at it.
To use the script, change to the srcdirectory.
Then compile it with the following command:
gcc -o rwb rwb.c
Then run it with the write size and number of writes to test as arguments:
./rwb <write_size> <num_writes>
For example:
./rwb 4096 1000
This would write 1000 blocks of 4096 bytes each to disk and output the time taken, system time taken, min load, max load, and I/O stats.