man/html/pmie/answer.pmie


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//
// solution for the pmie tutorial
//

// show any disk doing more than 50 I/Os per second
some_inst ( disk.dev.total > 50 ) -> print "high IOPs:" " %i: %v";

// some disk is doing more than 30 reads per second
some_inst ( disk.dev.read > 30 ) -> print "busy reads:" " %i: %v";

// some disk is doing more than 30 writes per second
some_inst ( disk.dev.write > 30 ) -> print "busy writes:" " %i: %v";

// some disk has a high I/O rate and more than 95% reads
some_inst ( disk.dev.total > 40 &&
	    disk.dev.read / disk.dev.total > 0.95 )
-> print "busy disk and >95% writes";

// some disk has a high I/O rate and 1 minute load average is
// greater than 5
kernel.all.load #'1 minute' > 5 &&
some_inst ( disk.dev.total > 40 )
-> print "busy disk and high load avg";