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# iotask.stp
# A reimplementation of user script: iotask.stp given at OLS 2005
# in the current language.
#
# Will Cohen
# 9/22/2005
global names, opens
global reads, read_bytes
global writes, write_bytes
probe kernel.function("sys_open") {
++names[execname()]; ++opens[execname()];
}
probe kernel.function("sys_read") {
++names[execname()]; ++reads[execname()];
read_bytes[execname()] += $count;
}
probe kernel.function("sys_write") {
++names[execname()]; ++writes[execname()];
write_bytes[execname()] += $count;
}
probe begin { log( "starting probe" ); }
probe end {
foreach( name in names){
log ("process: " . name);
if (opens[name])
log( "opens n=" . sprint(opens[name]));
if ( reads[name]){
count = reads[name]; total=read_bytes[name];
log("reads n, sum, avg=". sprint(count)
. "," . sprint(total) . "," . sprint(total/count));
}
if (writes[name]){
count = writes[name]; total=write_bytes[name];
log("writes n, sum, avg=". sprint(count)
. "," . sprint(total) . "," . sprint(total/count));
}
log("");
}
}
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