Hard disk speed

2008-01-08 Thread Manuel Ravasio
Hello list. Can anyone suggest me a way to measure a hard disk speed? I'm thinking about a tool like linux's hdparm / sdparm A simple solution could be measuring the time required for the generation of a big file, something like time dd if=/dev/zero of=/some/file bs=whatever count=whatever

Re: Hard disk speed

2008-01-08 Thread Nick Holland
Manuel Ravasio wrote: Hello list. Can anyone suggest me a way to measure a hard disk speed? I'm thinking about a tool like linux's hdparm / sdparm A simple solution could be measuring the time required for the generation of a big file, something like time dd if=/dev/zero of=/some/file bs

Re: Hard disk speed

2008-01-08 Thread Manuel Ravasio
Write a random number on a piece of paper. I'd suggest 42 for laughs. At least people will understand how you derived it. From a book? Better: from THE book? :-) You can't just define something as complicated as hard disk speed in one number. Or twenty numbers. Ok, I got the idea. time

Re: Hard disk speed

2008-01-08 Thread Unix Fan
You can use iostat(8) if you're trying to ascertain the transfer rate the of drive... are you? $ iostat -d wd0 cd0 cd1 fd0 KB/t t/s MB/s KB/t t/s MB/s KB/t t/s MB/s KB/t t/s MB/s 18.10 1 0.03 0.00 0 0.00 0.00 0 0.00 3.88

Re: Hard disk speed

2008-01-08 Thread Daniel Ouellet
Manuel Ravasio wrote: You can't just define something as complicated as hard disk speed in one number. Or twenty numbers. Ok, I got the idea. time + dd will do. Just remember, that would be kind of fine for the same OS, but not that reliable between different OS. As long as you try