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- Improve disk tuning algorithm

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This commit is contained in:
Philip Knirsch 2009-07-27 18:16:23 +02:00
parent 2835008734
commit ab29d0e07a
1 changed files with 14 additions and 8 deletions
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22
tuningplugins/disk.py
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@ -22,8 +22,9 @@ class DiskTuning:
def __init__(self):
self.devidle = {}
self.enabled = True
self.spins = ["0", "250", "240", "230", "220", "210", "200", "190", "180", "170", "160", "150", "140", "130", "120", "110", "100", "90", "80", "70", "60"]
self.power = ["255", "225", "195", "165", "155", "145", "135", "125", "115", "100", "90", "80", "70", "60"]
self.power = ["255", "225", "195", "165", "145", "125", "105", "85", "70", "55", "30", "20"]
self.spindown = ["0", "250", "230", "210", "190", "170", "150", "130", "110", "90", "70", "60"]
self.levels = len(self.power)
def __updateIdle__(self, dev, devload):
idle = self.devidle.setdefault(dev, {})
@ -53,12 +54,17 @@ class DiskTuning:
for dev in disks.keys():
devload = disks[dev]
self.__updateIdle__(dev, devload)
if self.devidle[dev]["LEVEL"] == 0 and self.devidle[dev]["READ"] >= 30 and self.devidle[dev]["WRITE"] >= 30:
self.devidle[dev]["LEVEL"] = 1
os.system("hdparm -Y -S60 -B1 /dev/"+dev+" > /dev/null 2>&1")
if self.devidle[dev]["LEVEL"] < self.levels-1 and self.devidle[dev]["READ"] >= 6 and self.devidle[dev]["WRITE"] >= 6:
self.devidle[dev].setdefault("LEVEL", 0)
self.devidle[dev]["LEVEL"] += 1
level = self.devidle[dev]["LEVEL"]
os.system("hdparm -S"+self.power[level]+" -B"+self.spindown[level]+" /dev/"+dev+" > /dev/null 2>&1")
if self.devidle[dev]["LEVEL"] > 0 and (self.devidle[dev]["READ"] == 0 or self.devidle[dev]["WRITE"] == 0):
self.devidle[dev]["LEVEL"] = 0
os.system("hdparm -S255 -B127 /dev/"+dev+" > /dev/null 2>&1")
print(load, self.devidle)
self.devidle[dev].setdefault("LEVEL", 0)
self.devidle[dev]["LEVEL"] -= 2
if self.devidle[dev]["LEVEL"] < 0:
self.devidle[dev]["LEVEL"] = 0
level = self.devidle[dev]["LEVEL"]
os.system("hdparm -S"+self.power[level]+" -B"+self.spindown[level]+" /dev/"+dev+" > /dev/null 2>&1")
_plugin = DiskTuning()