profile.py

   1 #
   2 # parse the output of "dracut --profile" and produce profiling information
   3 #
   4 # Copyright 2011 Harald Hoyer <harald@redhat.com>
   5 # Copyright 2011 Red Hat, Inc.  All rights reserved.
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 2 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 #
  20
  21 import sys
  22 import operator
  23 import re
  24 loglines = sys.stdin
  25
  26 logpats  = r'[+]+[ \t]+([^ \t]+)[ \t]+([^ \t:]+):[ ]+.*'
  27
  28 logpat   = re.compile(logpats)
  29
  30 groups   = (logpat.match(line) for line in loglines)
  31 tuples   = (g.groups() for g in groups if g)
  32
  33 def gen_times(t):
  34     oldx=None
  35     for x in t:
  36         fx=float(x[0])
  37         if oldx:
  38             #print fx - float(oldx[0]), x[0], x[1], oldx[0], oldx[1]
  39             if ((fx - float(oldx[0])) > 0):
  40                     yield (fx - float(oldx[0]), oldx[1])
  41
  42         oldx = x
  43
  44 colnames = ('time','line')
  45
  46 log      = (dict(zip(colnames,t)) for t in gen_times(tuples))
  47
  48 if __name__ == '__main__':
  49     e={}
  50     for x in log:
  51         if not x['line'] in e:
  52             e[x['line']] = x['time']
  53         else:
  54             e[x['line']] += x['time']
  55
  56     sorted_x = sorted(e.iteritems(), key=operator.itemgetter(1), reverse=True)
  57     for x in sorted_x:
  58         print x[0], x[1]
  59