130 lines
3.4 KiB
Python
130 lines
3.4 KiB
Python
|
####################################################################
|
||
|
|
# This class open the /proc/PID/maps and /proc/PID/smaps files
|
||
|
|
# to get useful information about the real memory usage
|
||
|
|
####################################################################
|
||
|
|
#!/usr/bin/env python
|
||
|
|
|
||
|
|
import os
|
||
|
|
|
||
|
|
# Parse the /proc/PID/smaps file
|
||
|
|
class ProcSmaps:
|
||
|
|
|
||
|
|
mappings = [] # Devices information
|
||
|
|
|
||
|
|
def __init__(self, pid):
|
||
|
|
|
||
|
|
smapfile = "/proc/%s/smaps" % pid
|
||
|
|
self.mappings = []
|
||
|
|
|
||
|
|
# Coded by Federico Mena (script)
|
||
|
|
try:
|
||
|
|
infile = open(smapfile, "r")
|
||
|
|
input = infile.read()
|
||
|
|
infile.close()
|
||
|
|
except:
|
||
|
|
print "Error trying " + smapfile
|
||
|
|
return
|
||
|
|
|
||
|
|
lines = input.splitlines()
|
||
|
|
|
||
|
|
num_lines = len (lines)
|
||
|
|
line_idx = 0
|
||
|
|
|
||
|
|
# 08065000-08067000 rw-p 0001c000 03:01 147613 /opt/gnome/bin/evolution-2.6
|
||
|
|
# Size: 8 kB
|
||
|
|
# Rss: 8 kB
|
||
|
|
# Shared_Clean: 0 kB
|
||
|
|
# Shared_Dirty: 0 kB
|
||
|
|
# Private_Clean: 8 kB
|
||
|
|
# Private_Dirty: 0 kB
|
||
|
|
|
||
|
|
while num_lines > 0:
|
||
|
|
fields = lines[line_idx].split (" ", 5)
|
||
|
|
if len (fields) == 6:
|
||
|
|
(offsets, permissions, bin_permissions, device, inode, name) = fields
|
||
|
|
else:
|
||
|
|
(offsets, permissions, bin_permissions, device, inode) = fields
|
||
|
|
name = ""
|
||
|
|
|
||
|
|
size = self.parse_smaps_size_line (lines[line_idx + 1])
|
||
|
|
rss = self.parse_smaps_size_line (lines[line_idx + 2])
|
||
|
|
shared_clean = self.parse_smaps_size_line (lines[line_idx + 3])
|
||
|
|
shared_dirty = self.parse_smaps_size_line (lines[line_idx + 4])
|
||
|
|
private_clean = self.parse_smaps_size_line (lines[line_idx + 5])
|
||
|
|
private_dirty = self.parse_smaps_size_line (lines[line_idx + 6])
|
||
|
|
name = name.strip ()
|
||
|
|
|
||
|
|
mapping = Mapping (size, rss, shared_clean, shared_dirty, private_clean, private_dirty, permissions, name)
|
||
|
|
self.mappings.append (mapping)
|
||
|
|
|
||
|
|
num_lines -= 7
|
||
|
|
line_idx += 7
|
||
|
|
|
||
|
|
# Parses a line of the form "foo: 42 kB" and returns an integer for the "42" field
|
||
|
|
def parse_smaps_size_line (self, line):
|
||
|
|
# Rss: 8 kB
|
||
|
|
fields = line.split ()
|
||
|
|
return int(fields[1])
|
||
|
|
|
||
|
|
class Mapping:
|
||
|
|
def __init__ (self, size, rss, shared_clean, shared_dirty, private_clean, private_dirty, permissions, name):
|
||
|
|
self.size = size
|
||
|
|
self.rss = rss
|
||
|
|
self.shared_clean = shared_clean
|
||
|
|
self.shared_dirty = shared_dirty
|
||
|
|
self.private_clean = private_clean
|
||
|
|
self.private_dirty = private_dirty
|
||
|
|
self.permissions = permissions
|
||
|
|
self.name = name
|
||
|
|
|
||
|
|
# Parse /proc/PID/maps file to get the clean memory usage by process,
|
||
|
|
# we avoid lines with backed-files
|
||
|
|
class ProcMaps:
|
||
|
|
|
||
|
|
clean_size = 0
|
||
|
|
|
||
|
|
def __init__(self, pid):
|
||
|
|
mapfile = "/proc/%s/maps" % pid
|
||
|
|
|
||
|
|
try:
|
||
|
|
infile = open(mapfile, "r")
|
||
|
|
except:
|
||
|
|
print "Error trying " + mapfile
|
||
|
|
return None
|
||
|
|
|
||
|
|
sum = 0
|
||
|
|
to_data_do = {
|
||
|
|
"[anon]": self.parse_size_line,
|
||
|
|
"[heap]": self.parse_size_line
|
||
|
|
}
|
||
|
|
|
||
|
|
for line in infile:
|
||
|
|
arr = line.split()
|
||
|
|
|
||
|
|
# Just parse writable mapped areas
|
||
|
|
if arr[1][1] != "w":
|
||
|
|
continue
|
||
|
|
|
||
|
|
if len(arr) == 6:
|
||
|
|
# if we got a backed-file we skip this info
|
||
|
|
if os.path.isfile(arr[5]):
|
||
|
|
continue
|
||
|
|
else:
|
||
|
|
line_size = to_data_do.get(arr[5], self.skip)(line)
|
||
|
|
sum += line_size
|
||
|
|
else:
|
||
|
|
line_size = self.parse_size_line(line)
|
||
|
|
sum += line_size
|
||
|
|
|
||
|
|
infile.close()
|
||
|
|
self.clean_size = sum
|
||
|
|
|
||
|
|
def skip(self, line):
|
||
|
|
return 0
|
||
|
|
|
||
|
|
# Parse a maps line and return the mapped size
|
||
|
|
def parse_size_line(self, line):
|
||
|
|
start, end = line.split()[0].split('-')
|
||
|
|
size = int(end, 16) - int(start, 16)
|
||
|
|
return size
|