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//
// nested quantification
//
Servers = ":moomba :gonzo"; // change as desired
// read and write rate per disk per host
//
rd = disk.dev.read $Servers;
wr = disk.dev.write $Servers;
// one value per host, true if 20% or more of the disks are doing
// significant reading or writing
//
rd_20 = 20%_inst disk.dev.read $Servers > 40;
wr_20 = 20%_inst disk.dev.write $Servers > 40;
// single truth value: more than 20% of the disks busy reading or writing
// on all hosts?
//
summary = all_host (
20%_inst disk.dev.read $Servers > 40 ||
20%_inst disk.dev.write $Servers > 40
);
// alternate form
//
summary2 = all_host (
20%_inst (
disk.dev.read $Servers > 40 ||
disk.dev.write $Servers > 40
)
);
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