73 lines
1.5 KiB
Python
73 lines
1.5 KiB
Python
|
# Monitor the system for dropped packets and proudce a report of drop locations and counts
|
||
|
|
|
||
|
|
import os
|
||
|
|
import sys
|
||
|
|
|
||
|
|
sys.path.append(os.environ['PERF_EXEC_PATH'] + \
|
||
|
|
'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
|
||
|
|
|
||
|
|
from perf_trace_context import *
|
||
|
|
from Core import *
|
||
|
|
from Util import *
|
||
|
|
|
||
|
|
drop_log = {}
|
||
|
|
kallsyms = []
|
||
|
|
|
||
|
|
def get_kallsyms_table():
|
||
|
|
global kallsyms
|
||
|
|
try:
|
||
|
|
f = open("/proc/kallsyms", "r")
|
||
|
|
linecount = 0
|
||
|
|
for line in f:
|
||
|
|
linecount = linecount+1
|
||
|
|
f.seek(0)
|
||
|
|
except:
|
||
|
|
return
|
||
|
|
|
||
|
|
|
||
|
|
j = 0
|
||
|
|
for line in f:
|
||
|
|
loc = int(line.split()[0], 16)
|
||
|
|
name = line.split()[2]
|
||
|
|
j = j +1
|
||
|
|
if ((j % 100) == 0):
|
||
|
|
print "\r" + str(j) + "/" + str(linecount),
|
||
|
|
kallsyms.append({ 'loc': loc, 'name' : name})
|
||
|
|
|
||
|
|
print "\r" + str(j) + "/" + str(linecount)
|
||
|
|
kallsyms.sort()
|
||
|
|
return
|
||
|
|
|
||
|
|
def get_sym(sloc):
|
||
|
|
loc = int(sloc)
|
||
|
|
for i in kallsyms:
|
||
|
|
if (i['loc'] >= loc):
|
||
|
|
return (i['name'], i['loc']-loc)
|
||
|
|
return (None, 0)
|
||
|
|
|
||
|
|
def print_drop_table():
|
||
|
|
print "%25s %25s %25s" % ("LOCATION", "OFFSET", "COUNT")
|
||
|
|
for i in drop_log.keys():
|
||
|
|
(sym, off) = get_sym(i)
|
||
|
|
if sym == None:
|
||
|
|
sym = i
|
||
|
|
print "%25s %25s %25s" % (sym, off, drop_log[i])
|
||
|
|
|
||
|
|
|
||
|
|
def trace_begin():
|
||
|
|
print "Starting trace (Ctrl-C to dump results)"
|
||
|
|
|
||
|
|
def trace_end():
|
||
|
|
print "Gathering kallsyms data"
|
||
|
|
get_kallsyms_table()
|
||
|
|
print_drop_table()
|
||
|
|
|
||
|
|
# called from perf, when it finds a correspoinding event
|
||
|
|
def skb__kfree_skb(name, context, cpu, sec, nsec, pid, comm,
|
||
|
|
skbaddr, protocol, location):
|
||
|
|
slocation = str(location)
|
||
|
|
try:
|
||
|
|
drop_log[slocation] = drop_log[slocation] + 1
|
||
|
|
except:
|
||
|
|
drop_log[slocation] = 1
|