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//
// summary metrics
//
// these expressions are evaluated by pmie(1)
//
// use the default interval between expression evaluation (currently
// 10 seconds), and re-configure via -t command line arg to pmie
// (see Install)
// CPU utilization
//
cpuse = "(kernel.percpu.cpu.sys + kernel.percpu.cpu.user)";
ncpu = "hinv.ncpu";
// average CPU utilization
summary.cpu.util = avg_inst $cpuse;
// proportion of CPUs that are busy
summary.cpu.busy = (count_inst $cpuse > 0.7) / $ncpu;
// Disk utilization
//
diskio = "disk.dev.total";
ndisk = "hinv.ndisk";
// average spindle activity
summary.disk.iops = avg_inst ($diskio);
// proportion of disk spindles that are busy
summary.disk.busy = (count_inst $diskio > 40) / $ndisk;
// Network interface utilization
//
netio = "network.interface.total.packets";
// average network interface activity
summary.netif.packets = avg_inst ($netio);
// proportion of network interfaces that are busy
summary.netif.busy = (count_inst $netio > 400) / (count_inst $netio >= 0);
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