1 #!/usr/bin/env python 2  3 import os 4 from subprocess import PIPE,Popen 5  6 def getPids(): 7         p = Popen(['pidof','httpd'],stdout=PIPE,stderr=PIPE) 8         pids = p.stdout.read().split() 9         return pids10 11 def parsePidFile(pids):12         http_sum = 013         for i in pids:14                 fn = os.path.join('/proc/',i,'status')15                 with open(fn) as fd:16                         for line in fd:17                                 if line.startswith('VmRSS'):18                                         http_mem = int(line.split()[1])19                                         http_sum += http_mem20                                         break21         return http_sum22 23 def total_mem(f):24         with open(f) as fd:25                 for line in fd:26                         if line.startswith('MemTotal'):27                                 total_sum = int(line.split()[1])28                                 return total_sum29 30 if __name__ == '__main__':31         pids = getPids()32         http_sum = parsePidFile(pids)33         total_sum = total_mem('/proc/meminfo')34         print "Apache memory is %s KB" % http_sum35         print "total memory is %s KB" % total_sum36         print "Percent : %.2f %%" % (http_sum/float(total_sum)*100)