mirror of
https://github.com/munin-monitoring/contrib.git
synced 2018-11-08 00:59:34 +01:00
73 lines
2.3 KiB
Python
73 lines
2.3 KiB
Python
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#!/usr/bin/python
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# Copyright (C) 2013 Helmut Grohne <helmut@subdivi.de>
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# License: GPLv2 like the rest of munin
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"""
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Usage:
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tcpdump -npi lo "tcp port 4949" -w munin.pcap
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# wait for one munin run, then press Ctrl-C
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./munin-profile-node.py munin.pcap
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"""
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import sys
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from scapy.utils import rdpcap
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import scapy.layers.l2
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from scapy.layers.inet import TCP
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class MuninProfiler:
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def __init__(self):
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self.to_node = ""
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self.from_node = ""
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self.times = dict()
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self.idles = []
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self.curcommand = None
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self.commandstart = None
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def handle_packet(self, packet):
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payload = str(packet[TCP].payload)
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if not payload:
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return
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if packet[TCP].dport == 4949:
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self.to_node += payload
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else:
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self.from_node += payload
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lines = self.to_node.split("\n")
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self.to_node = lines.pop()
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for line in lines:
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self.handle_to_node(packet.time, line)
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lines = self.from_node.split("\n")
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self.from_node = lines.pop()
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for line in lines:
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self.handle_from_node(packet.time, line)
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def handle_to_node(self, timestamp, line):
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if self.curcommand is None and self.commandstart is not None:
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self.idles.append(timestamp - self.commandstart)
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self.curcommand = line
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self.commandstart = timestamp
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def handle_from_node(self, timestamp, line):
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if line != ".":
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return
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if self.curcommand is None:
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return
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duration = timestamp - self.commandstart
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self.times.setdefault(self.curcommand, []).append(duration)
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self.curcommand = None
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self.commandstart = timestamp
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def main():
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mp = MuninProfiler()
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for pkt in rdpcap(sys.argv[1]):
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mp.handle_packet(pkt)
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print("Client idle time during connection: %.2fs" % sum(mp.idles))
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times = [(key, sum(value)) for key, value in mp.times.items()]
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times.sort(key=lambda tpl: -tpl[1])
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total = sum(value for key, value in times)
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print("Total time waiting for the node: %.2fs" % total)
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print("Top 10 plugins using most of the time")
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for key, value in times[:10]:
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print("%-40s: %.2fs (%d%%)" % (key, value, 100 * value / total))
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if __name__ == '__main__':
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main()
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