Date: Wed, 18 Nov 2009 12:59:08 -0800 From: Nerius Landys <nlandys@gmail.com> To: questions@freebsd.org Subject: Measuring disk I/O Message-ID: <560f92640911181259m37d2659w775fa3fafd9499b6@mail.gmail.com>
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A friend and I are working on a small video-game related project as a hobby. We're running several scripts 24/7 that make lots of calls to a MySQL database. The mysql server process shows an average CPU use of 1% (reported by top) and it never goes above about 2% The tables it's hitting are myisam tables. I'm a little bit worried that the mysql process is using a lot of disk access. I don't know too much about hard disks but my feeling is that too much disk use could slow the machine down or cause a premature hard disk failure. WD Raptor model. I don't know if my concerns are well-founded, but I would like to measure impact on the hard disk somehow. I don't know how to see disk I/O. I do know how to use top. How do I measure disk I/O? Any other thoughts?
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