def collectStat(self, ticks):
tasks = self.scheduler.getAllTaks()
alpha = self.scheduler.getAlpha()
wFeatures = WorkloadFeatures(tasks)
features = wFeatures.getFeatures()
objVal = Metric.objFunction(tasks, self.scheduler.getCurTime())
self.objValFile.write("%d %f\n" % (ticks, objVal))
self.alphaFile.write("%d %s\n" % (ticks, str(alpha)))
self.workloadFile.write("%d %s\n" % (ticks, str(features)))
def test_objFunction(self):
ioList1 = IOList([IO(10, 5), IO(13, 7)])
ioList2 = IOList([IO(1, 3), IO(2, 6), IO(5, 8), IO(6, 8)])
t1 = Task("Task 1", 0, 3, 20, ioList1)
t2 = Task("Task 1", 0, 5, 40, ioList2)
t1.setUsedCpuTime(14)
t1.setTimesBlocked(2)
t1.setTotalReadyWait(4)
t1.setTimesScheduled(2)
t2.setUsedCpuTime(7)
t2.setTimesBlocked(4)
t2.setTotalReadyWait(4)
t2.setTimesScheduled(2)
tasks = [t1, t2]
self.assertTrue(isclose(11.1428, Metric.objFunction(tasks, 10)))
def probe(self):
# nothing to do
if not self._isProbing:
return False
tasks = self.scheduler.getAllTaks()
alpha = self.getCurAlpha()
# first probe
if self.alpha is None:
self.alpha = alpha
self.scheduler.setAlpha(alpha)
return False
wFeatures = WorkloadFeatures(tasks)
objVal = Metric.objFunction(tasks, self.scheduler.getCurTime())
self.relation.append((wFeatures, alpha, objVal))
isOverflow = self.incCurIndices()
alpha = self.getCurAlpha()
self.scheduler.setAlpha(alpha)
self.alpha = alpha
# end probing phase
if isOverflow:
self.nPasses += 1
if self.nPasses == WorkloadProber.AlphaMult:
self._isProbing = False
return True
return False
