#!/usr/bin/python

import sys, os, string

try:

import hashlib

md5_new = hashlib.md5

except ImportError:

import md5

md5_new = md5.new

if os.geteuid() != 0:

sys.stderr.write("Sorry, root permission required.\n");

sys.exit(1)

split_args=False

if len(sys.argv)==2 and sys.argv[1] == "--split-args":

split_args = True

PAGESIZE=os.sysconf("SC_PAGE_SIZE")/1024 #KiB

our_pid=os.getpid()

def kernel_ver():

kv=open("/proc/sys/kernel/osrelease", "rt").readline().split(".")[:3]

for char in "-_":

kv[2]=kv[2].split(char)[0]

return (int(kv[0]), int(kv[1]), int(kv[2]))

kv=kernel_ver()

have_pss=0

def getMemStats(pid):

global have_pss

mem_id = pid #unique

Private_lines=[]

Shared_lines=[]

Pss_lines=[]

Rss=int(open("/proc/"+str(pid)+"/statm", "rt").readline().split()[1])*PAGESIZE

if os.path.exists("/proc/"+str(pid)+"/smaps"): #stat

digester = md5_new()

for line in open("/proc/"+str(pid)+"/smaps", "rb").readlines(): #open

digester.update(line)

line = line.decode("ascii")

if line.startswith("Shared"):

Shared_lines.append(line)

elif line.startswith("Private"):

Private_lines.append(line)

elif line.startswith("Pss"):

have_pss=1

Pss_lines.append(line)

mem_id = digester.hexdigest()

Shared=sum([int(line.split()[1]) for line in Shared_lines])

Private=sum([int(line.split()[1]) for line in Private_lines])

if have_pss:

pss_adjust=0.5

Pss=sum([float(line.split()[1])+pss_adjust for line in Pss_lines])

Shared = Pss - Private

elif (2,6,1) <= kv <= (2,6,9):

Shared=0

Private = Rss

else:

Shared=int(open("/proc/"+str(pid)+"/statm", "rt").readline().split()[2])

Shared*=PAGESIZE

Private = Rss - Shared

return (Private, Shared, mem_id)

def getCmdName(pid):

cmdline = open("/proc/%d/cmdline" % pid, "rt").read().split("\0")

if cmdline[-1] == '' and len(cmdline) > 1:

cmdline = cmdline[:-1]

path = os.path.realpath("/proc/%d/exe" % pid)

if split_args:

return " ".join(cmdline)

if path.endswith(" (deleted)"):

path = path[:-10]

if os.path.exists(path):

path += " [updated]"

else:

if os.path.exists(cmdline[0]):

path = cmdline[0] + " [updated]"

else:

path += " [deleted]"

exe = os.path.basename(path)

cmd = open("/proc/%d/status" % pid, "rt").readline()[6:-1]

if exe.startswith(cmd):

cmd=exe

return cmd

cmds={}

shareds={}

mem_ids={}

count={}

for pid in os.listdir("/proc/"):

if not pid.isdigit():

continue

pid = int(pid)

if pid == our_pid:

continue

try:

cmd = getCmdName(pid)

except:

continue

try:

private, shared, mem_id = getMemStats(pid)

except:

continue

if shareds.get(cmd):

if have_pss:

shareds[cmd]+=shared

elif shareds[cmd] < shared:

shareds[cmd]=shared

else:

shareds[cmd]=shared

cmds[cmd]=cmds.setdefault(cmd,0)+private

if cmd in count:

count[cmd] += 1

else:

count[cmd] = 1

mem_ids.setdefault(cmd,{}).update({mem_id:None})

total=0

for cmd in cmds:

cmd_count = count[cmd]

if len(mem_ids[cmd]) == 1 and cmd_count > 1:

cmds[cmd] /= cmd_count

if have_pss:

shareds[cmd] /= cmd_count

cmds[cmd]=cmds[cmd]+shareds[cmd]

total+=cmds[cmd]

if sys.version_info >= (2, 6):

sort_list = sorted(cmds.items(), key=lambda x:x[1])

else:

sort_list = cmds.items()

sort_list.sort(lambda x,y:cmp(x[1],y[1]))

sort_list=list(filter(lambda x:x[1],sort_list))

def human(num, power="Ki"):

powers=["Ki","Mi","Gi","Ti"]

while num >= 1000:

num /= 1024.0

power=powers[powers.index(power)+1]

return "%.1f %s" % (num,power)

def cmd_with_count(cmd, count):

if count>1:

return "%s (%u)" % (cmd, count)

else:

return cmd

sys.stdout.write(" Private + Shared = RAM used\tProgram \n\n")

for cmd in sort_list:

sys.stdout.write("%8sB + %8sB = %8sB\t%s\n" % (human(cmd[1]-shareds[cmd[0]]),

human(shareds[cmd[0]]), human(cmd[1]),

cmd_with_count(cmd[0], count[cmd[0]])))

if have_pss:

sys.stdout.write("%s\n%s%8sB\n%s\n" % ("-" * 33,

" " * 24, human(total), "=" * 33))

sys.stdout.write("\n Private + Shared = RAM used\tProgram \n\n")

def shared_val_accuracy():

"""http://wiki.apache.org/spamassassin/TopSharedMemoryBug"""

if kv[:2] == (2,4):

if open("/proc/meminfo", "rt").read().find("Inact_") == -1:

return 1

return 0

elif kv[:2] == (2,6):

if os.path.exists("/proc/"+str(os.getpid())+"/smaps"):

if open("/proc/"+str(os.getpid())+"/smaps", "rt").read().find("Pss:")!=-1:

return 2

else:

return 1

if (2,6,1) <= kv <= (2,6,9):

return -1

return 0

else:

return 1

vm_accuracy = shared_val_accuracy()

if vm_accuracy == -1:

sys.stderr.write(

"Warning: Shared memory is not reported by this system.\n"

)

sys.stderr.write(

"Values reported will be too large, and totals are not reported\n"

)

elif vm_accuracy == 0:

sys.stderr.write(

"Warning: Shared memory is not reported accurately by this system.\n"

)

sys.stderr.write(

"Values reported could be too large, and totals are not reported\n"

)

elif vm_accuracy == 1:

sys.stderr.write(

"Warning: Shared memory is slightly over-estimated by this system\n"

"for each program, so totals are not reported.\n"

)