My Solaris 10 websever / database server disk io keeps spiking at intermittent times.
iostat -xtc 5 the reads / sec will jump from 3.0 to 1450.0 and %busy will jump to 98%
The apache access log doesn't indicate anything out of the ordinary. In other words, requests aren't any higher than usual.
top doesn't generate anything useful. The cpu usage is fine with mysql using about 20% and nothing else to speak of really.
What monitoring tool should I be using to see what process is using excessive disk I/O? or if there are any other suggestions I'm all ears.