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global names, opens, reads, writes
probe begin { println("starting probe") }
probe timer.ms(10000) {
println("stopping probe after 10 seconds")
exit()
}
probe kernel.function("sys_open") {
e=execname(); names[e]=1
opens[e] ++ # simple integer array
}
probe kernel.function("sys_read") {
e=execname(); names[e]=1
reads[e] <<< $count # statistics array
}
probe kernel.function("sys_write") {
e=execname(); names[e]=1
writes[e] <<< $count # statistics array
}
probe end {
foreach (name+ in names) { # sort by name
printf("process: %s\n", name)
if (opens[name])
printf("opens n=%d\n", opens[name])
if (@count(reads[name]))
printf("reads n=%d, sum=%d, avg=%d\n",
@count(reads[name]), # extracting stat results
@sum(reads[name]),
@avg(reads[name]))
if (@count(writes[name]))
printf("writes n=%d, sum=%d, avg=%d\n",
@count(writes[name]), # extracting stat results
@sum(writes[name]),
@avg(writes[name]))
}
}
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