scruboffcpu.xd

#pragma D option quiet
#pragma D option dynvarsize=10M

BEGIN
{
	timeoff = 0;
}

metaslab_load:entry
{
	self->total_offtime = 0;
}

sched:::off-cpu
/callers["metaslab_load"]/
{
	self->offtime = timestamp;
	offtime[curlwpsinfo->pr_addr] = timestamp;
}

sched:::wakeup
/offtime[args[0]->pr_addr]/
{
	this->us = (timestamp - offtime[args[0]->pr_addr]) / 1000;
	offtime[args[0]->pr_addr] = 0;
	@wakefrom[stack()] = quantize(this->us);

}

metaslab_load:return
{
	printf("loaded in %ums, %ums off-cpu\n",
	    entry->elapsed_ms, self->total_offtime / 1000);
	self->total_offtime = 0;
}


sched:::on-cpu
/self->offtime/
{
	this->us = (timestamp - self->offtime) / 1000;
	self->total_offtime += this->us;
	@sleepfrom[stack()] = quantize(this->us);
	self->offtime = 0;
}

END
{
	printf("*********** wait from: us waited ************\n");
	trunc(@sleepfrom, 10);
	printa(@sleepfrom);
	printf("*********** woken from: us waited ************\n");
	trunc(@wakefrom, 10);
	printa(@wakefrom);
}