diff options
| -rw-r--r-- | doc/TIPS.txt (renamed from doc/HOWTO.txt) | 20 | ||||
| -rw-r--r-- | monitorplugins/net.py (renamed from monitorplugins/network.py) | 29 | ||||
| -rw-r--r-- | tuningplugins/disk.py | 10 | ||||
| -rw-r--r-- | tuningplugins/net.py | 48 |
4 files changed, 93 insertions, 14 deletions
diff --git a/doc/HOWTO.txt b/doc/TIPS.txt index 9f2d0f9..6b76dd1 100644 --- a/doc/HOWTO.txt +++ b/doc/TIPS.txt @@ -1,5 +1,8 @@ === Simple user tips for improving power usage === +* Use a properly dimensioned system for the job (no need for overpowered systems for simple Desktop use e.g.) +* For servers consolidate services on fewer systems to maximize efficiency of each system * Enforce turning of machines that are not used (e.g. company policy) +* Unplug and/or turn of peripherals that aren't used (e.g. external USB devices, monitors, printers, scanners) * Turn of unused hardware already in BIOS. * Disable power hungry features. * Enable CPU scaling if supported for ondemand CPU governor. DONT use powersave governor, typically uses more power than ondemand @@ -12,17 +15,24 @@ ** hdparm -S240 /dev/sda (20m idle to spindown) ** hdparm -B1 /dev/sda (Max powersave mode) * Make sure writes to hd don't wake it up too quickly: -** Set flusing to once every hour -** echo "360000" > /proc/sys/vm/dirty_writeback_centisecs +** Set flusing to once 5 minutes +** echo "3000" > /proc/sys/vm/dirty_writeback_centisecs ** Enable laptop mode -** echo "1" > /proc/sys/vm/laptop_mode +** echo "5" > /proc/sys/vm/laptop_mode +* Use relatime for your / partition +** mount -o remount,relatime / +* Disable CD-ROM polling from HAL (prevents popups when a CD is inserted): +** hal-disable-polling --device /dev/scd0 +* Enable USB autosuspend by adding the following to the kernel boot commandline: +** usbcore.autosuspend=5 * Screensaver needs to dpms off the screen, not just make colors black. To turn of monitor after 120s when X is running: ** xset dpms 0 0 120 === Simple programmer tips for improving power usage === +* Avoid unecessary work/computation * Wake up only when necessary -* No poll() calls -* If you wake up, do everything at once (race to idle) +* Do not actively poll in programs or use short regular timeouts, rather react to events +* If you wake up, do everything at once (race to idle) and as fast as possible * Use large buffers to avoid frequent disk access. Write one large block at a time * Don't use [f]sync() if not necessary * Group timers accross applications if possible (even systems) diff --git a/monitorplugins/network.py b/monitorplugins/net.py index 64c493a..0091b26 100644 --- a/monitorplugins/network.py +++ b/monitorplugins/net.py @@ -21,6 +21,19 @@ import os class NetMonitor: def __init__(self): self.devices = {} + devs = open("/proc/net/dev").readlines() + for l in devs: + l = l.replace(":", " ") + v = l.split() + d = v[0] + if not d.startswith("eth"): + continue + self.devices[d] = {} + self.devices[d]["new"] = ['0', '0', '0', '0'] + self.devices[d]["max"] = [70*1024*1024, 1, 70*1024*1024, 1] + self.__updateStat__(d) + self.devices[d]["max"] = [70*1024*1024, 1, 70*1024*1024, 1] + print self.devices def __calcdiff__(self, dev): l = [] @@ -29,9 +42,15 @@ class NetMonitor: return l def __updateStat__(self, dev): - l = open("/sys/block/"+dev+"/stat", "r").read() - self.devices[dev]["old"] = self.devices[dev]["new"] - self.devices[dev]["new"] = l.split() + self.devices[dev]["old"] = self.devices[dev]["new"][:] + l = open("/sys/class/net/"+dev+"/statistics/rx_bytes", "r").read().strip() + self.devices[dev]["new"][0] = l + l = open("/sys/class/net/"+dev+"/statistics/rx_packets", "r").read().strip() + self.devices[dev]["new"][1] = l + l = open("/sys/class/net/"+dev+"/statistics/tx_bytes", "r").read().strip() + self.devices[dev]["new"][2] = l + l = open("/sys/class/net/"+dev+"/statistics/tx_packets", "r").read().strip() + self.devices[dev]["new"][3] = l l = self.__calcdiff__(dev) for i in xrange(len(l)): if l[i] > self.devices[dev]["max"][i]: @@ -48,8 +67,8 @@ class NetMonitor: ret["NET"] = {} for dev in self.devices.keys(): ret["NET"][dev] = {} - ret["NET"][dev]["READ"] = float(self.devices[dev]["diff"][1]) / float(self.devices[dev]["max"][1]) - ret["NET"][dev]["WRITE"] = float(self.devices[dev]["diff"][5]) / float(self.devices[dev]["max"][5]) + ret["NET"][dev]["READ"] = float(self.devices[dev]["diff"][0]) / float(self.devices[dev]["max"][0]) + ret["NET"][dev]["WRITE"] = float(self.devices[dev]["diff"][2]) / float(self.devices[dev]["max"][2]) return ret _plugin = NetMonitor() diff --git a/tuningplugins/disk.py b/tuningplugins/disk.py index e41403f..5bdcea2 100644 --- a/tuningplugins/disk.py +++ b/tuningplugins/disk.py @@ -16,7 +16,7 @@ # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. # -import os +import os, copy class DiskTuning: def __init__(self): @@ -35,12 +35,14 @@ class DiskTuning: def setTuning(self, load): disks = load.setdefault("DISK", {}) + oldidle = copy.deepcopy(self.devidle) for dev in disks.keys(): devload = disks[dev] self.__updateIdle__(dev, devload) - if self.devidle[dev]["READ"] == 30 and self.devidle[dev]["WRITE"] == 30: - os.system("hdparm -S5 /dev/"+dev) - os.system("hdparm -B1 /dev/"+dev) + if self.devidle[dev]["READ"] == 30 or self.devidle[dev]["WRITE"] == 30: + os.system("hdparm -Y -S60 -B1 /dev/"+dev) + if oldidle.has_key(dev) and oldidle[dev]["READ"] > 30 and oldidle[dev]["WRITE"] > 30 and (self.devidle[dev]["READ"] == 0 or self.devidle[dev]["WRITE"] == 0): + os.system("hdparm -S255 -B127 /dev/"+dev) print(load, self.devidle) _plugin = DiskTuning() diff --git a/tuningplugins/net.py b/tuningplugins/net.py new file mode 100644 index 0000000..8ac2db1 --- /dev/null +++ b/tuningplugins/net.py @@ -0,0 +1,48 @@ +# Copyright (C) 2008, 2009 Red Hat, Inc. +# Authors: Phil Knirsch +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License +# as published by the Free Software Foundation; either version 2 +# of the License, or (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. +# + +import os, copy + +class NetTuning: + def __init__(self): + self.devidle = {} + + def __updateIdle__(self, dev, devload): + for type in ("READ", "WRITE"): + if devload[type] <= 0.005: + idle = self.devidle.setdefault(dev, {}) + idle.setdefault(type, 0) + idle[type] += 1 + else: + idle = self.devidle.setdefault(dev, {}) + idle.setdefault(type, 0) + idle[type] = 0 + + def setTuning(self, load): + disks = load.setdefault("NET", {}) + oldidle = copy.deepcopy(self.devidle) + for dev in disks.keys(): + devload = disks[dev] + self.__updateIdle__(dev, devload) + if self.devidle[dev]["READ"] == 6 or self.devidle[dev]["WRITE"] == 6: + os.system("ethtool -s "+dev+" advertise 0x003") + if oldidle.has_key(dev) and oldidle[dev]["READ"] > 6 and oldidle[dev]["WRITE"] > 6 and (self.devidle[dev]["READ"] == 0 or self.devidle[dev]["WRITE"] == 0): + os.system("ethtool -s "+dev+" advertise 0x03F") + print(load, self.devidle) + +_plugin = NetTuning() |