81e1b25687
Try to be more accurate in calculating memory by using the /proc/meminfo interface directly. fixes #181
68 lines
2.5 KiB
Python
68 lines
2.5 KiB
Python
# pylint: disable=C0111,R0903
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"""Displays available RAM, total amount of RAM and percentage available.
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Parameters:
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* memory.warning : Warning threshold in % of memory used (defaults to 80%)
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* memory.critical: Critical threshold in % of memory used (defaults to 90%)
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* memory.format: Format string (defaults to "{used}/{total} ({percent:05.02f}%)")
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* memory.usedonly: Only show the amount of RAM in use (defaults to False). Same as memory.format="{used}"
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"""
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import re
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import bumblebee.util
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import bumblebee.input
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import bumblebee.output
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import bumblebee.engine
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class Container(object):
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def __init__(self, **kwargs):
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self.__dict__.update(kwargs)
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class Module(bumblebee.engine.Module):
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def __init__(self, engine, config):
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super(Module, self).__init__(engine, config,
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bumblebee.output.Widget(full_text=self.memory_usage)
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)
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self.update(None)
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engine.input.register_callback(self, button=bumblebee.input.LEFT_MOUSE,
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cmd="gnome-system-monitor")
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@property
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def _format(self):
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if bumblebee.util.asbool(self.parameter("usedonly", False)):
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return "{used}"
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else:
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return self.parameter("format", "{used}/{total} ({percent:05.02f}%)")
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def memory_usage(self, widget):
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return self._format.format(**self._mem)
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def update(self, widgets):
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data = {}
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with open("/proc/meminfo", "r") as f:
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for line in f:
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tmp = re.split(r"[:\s]+", line)
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value = int(tmp[1])
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if tmp[2] == "kB": value = value*1024
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if tmp[2] == "mB": value = value*1024*1024
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if tmp[2] == "gB": value = value*1024*1024*1024
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data[tmp[0]] = value
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self._mem = {
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"total": bumblebee.util.bytefmt(data["MemTotal"]),
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"available": bumblebee.util.bytefmt(data["MemAvailable"]),
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"free": bumblebee.util.bytefmt(data["MemFree"]),
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"used": bumblebee.util.bytefmt(data["MemTotal"] - data["MemFree"] - data["Buffers"] - data["Cached"] - data["Slab"]),
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"percent": (float(data["MemTotal"] - data["MemAvailable"])/data["MemTotal"])*100
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}
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def state(self, widget):
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if self._mem["percent"] > float(self.parameter("critical", 90)):
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return "critical"
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if self._mem["percent"] > float(self.parameter("warning", 80)):
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return "warning"
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return None
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# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4
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