#!/usr/bin/env pythonimport osfrom subprocess import Popen, PIPEdef getPid():    p=Popen(['pidof','httpd'],stdout=PIPE,stderr=PIPE)    pids = p.stdout.read().split()    return pidsdef paresPidFile(pids):     sum =0     for i in pids:         fn = os.path.join('/proc/',i,'status')         with open(fn) as fd:            for line in fd:                 if line.startswith('VmRSS'):                     http_mem =int(line.split()[1])                     sum += http_mem                     break     return sumdef total_mem(f):    with open(f) as fd:        for line in fd:             if line.startswith('MemTotal'):                    total_mem =int(line.split()[1])                    return total_memif __name__ =='__main__':    pids = getPid()    http_mem = paresPidFile(pids)    total = total_mem('/proc/meminfo')    print"Apache memory is: %s KB"% http_mem    print "Percent: %.2f%%"%(http_mem/float(total)*100)