1 #! /usr/bin/env python 2 # 3 # btt blkno plotting interface 4 # 5 # (C) Copyright 2008 Hewlett-Packard Development Company, L.P. 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, write to the Free Software 19 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20 # 21 """ 22 bno_plot.py 23 [ -h | --help ] 24 [ -K | --keys-below ] 25 [ -v | --verbose ] 26 [ <file...> ] 27 28 Utilizes gnuplot to generate a 3D plot of the block number output 29 from btt. If no <files> are specified, it will utilize all files 30 generated after btt was run with -B blknos (meaning: all files of the 31 form blknos*[rw].dat). 32 33 The -K option forces bno_plot.py to put the keys below the graph, 34 typically all keys for input files are put in the upper right corner 35 of the graph. If the number of devices exceed 10, then bno_plot.py will 36 automatically push the keys under the graph. 37 38 To exit the plotter, enter 'quit' or ^D at the 'gnuplot> ' prompt. 39 """ 40 41 import getopt, glob, os, sys, tempfile 42 43 verbose = 0 44 cmds = """ 45 set title 'btt Generated Block Accesses' 46 set xlabel 'Time (secs)' 47 set ylabel 'Block Number' 48 set zlabel '# Blocks per IO' 49 set grid 50 """ 51 52 53 #----------------------------------------------------------------------------- 54 def parse_args(in_args): 55 global verbose 56 57 keys_below = False 58 s_opts = 'hKv' 59 l_opts = [ 'help', 'keys-below', 'verbose' ] 60 61 try: 62 (opts, args) = getopt.getopt(in_args, s_opts, l_opts) 63 except getopt.error, msg: 64 print >>sys.stderr, msg 65 print >>sys.stderr, __doc__ 66 sys.exit(1) 67 68 for (o, a) in opts: 69 if o in ('-h', '--help'): 70 print __doc__ 71 sys.exit(0) 72 elif o in ('-v', '--verbose'): 73 verbose += 1 74 elif o in ('-K', '--keys-below'): 75 keys_below = True 76 77 if len(args) > 0: bnos = args 78 else: bnos = glob.glob('blknos*[rw].dat') 79 80 return (bnos, keys_below) 81 82 #----------------------------------------------------------------------------- 83 if __name__ == '__main__': 84 (bnos, keys_below) = parse_args(sys.argv[1:]) 85 86 if verbose: 87 print 'Using files:', 88 for bno in bnos: print bno, 89 if keys_below: print '\nKeys are to be placed below graph' 90 else: print '' 91 92 tmpdir = tempfile.mktemp() 93 os.mkdir(tmpdir) 94 95 plot_cmd = None 96 for f in bnos: 97 t = '%s/%s' % (tmpdir, f) 98 99 fo = open(t, 'w') 100 for line in open(f, 'r'): 101 fld = line.split(None) 102 print >>fo, fld[0], fld[1], int(fld[2])-int(fld[1]) 103 fo.close() 104 105 t = t[t.rfind('/')+1:] 106 if plot_cmd == None: plot_cmd = "splot '%s'" % t 107 else: plot_cmd = "%s,'%s'" % (plot_cmd, t) 108 109 fo = open('%s/plot.cmds' % tmpdir, 'w') 110 print >>fo, cmds 111 if len(bnos) > 10 or keys_below: print >>fo, 'set key below' 112 print >>fo, plot_cmd 113 fo.close() 114 115 pid = os.fork() 116 if pid == 0: 117 cmd = '/usr/bin/gnuplot %s/plot.cmds -' % tmpdir 118 119 if verbose: print 'Executing %s' % cmd 120 121 cmd = cmd.split(None) 122 os.chdir(tmpdir) 123 os.execvp(cmd[0], cmd) 124 sys.exit(1) 125 126 os.waitpid(pid, 0) 127 os.system('/bin/rm -rf ' + tmpdir) 128
