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41
COPYING
View file

@ -1,12 +1,12 @@
GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
Preamble
The licenses for most software are designed to take away your
freedom to share and change it. By contrast, the GNU General Public
@ -15,7 +15,7 @@ software--to make sure the software is free for all its users. This
General Public License applies to most of the Free Software
Foundation's software and to any other program whose authors commit to
using it. (Some other Free Software Foundation software is covered by
the GNU Lesser General Public License instead.) You can apply it to
the GNU Library General Public License instead.) You can apply it to
your programs, too.
When we speak of free software, we are referring to freedom, not
@ -55,8 +55,8 @@ patent must be licensed for everyone's free use or not licensed at all.
The precise terms and conditions for copying, distribution and
modification follow.
GNU GENERAL PUBLIC LICENSE
GNU GENERAL PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. This License applies to any program or other work which contains
@ -110,7 +110,7 @@ above, provided that you also meet all of these conditions:
License. (Exception: if the Program itself is interactive but
does not normally print such an announcement, your work based on
the Program is not required to print an announcement.)
These requirements apply to the modified work as a whole. If
identifiable sections of that work are not derived from the Program,
and can be reasonably considered independent and separate works in
@ -168,7 +168,7 @@ access to copy from a designated place, then offering equivalent
access to copy the source code from the same place counts as
distribution of the source code, even though third parties are not
compelled to copy the source along with the object code.
4. You may not copy, modify, sublicense, or distribute the Program
except as expressly provided under this License. Any attempt
otherwise to copy, modify, sublicense or distribute the Program is
@ -225,7 +225,7 @@ impose that choice.
This section is intended to make thoroughly clear what is believed to
be a consequence of the rest of this License.
8. If the distribution and/or use of the Program is restricted in
certain countries either by patents or by copyrighted interfaces, the
original copyright holder who places the Program under this License
@ -255,7 +255,7 @@ make exceptions for this. Our decision will be guided by the two goals
of preserving the free status of all derivatives of our free software and
of promoting the sharing and reuse of software generally.
NO WARRANTY
NO WARRANTY
11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
@ -277,9 +277,9 @@ YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
@ -303,16 +303,17 @@ the "copyright" line and a pointer to where the full notice is found.
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:
Gnomovision version 69, Copyright (C) year name of author
Gnomovision version 69, Copyright (C) year name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
@ -335,5 +336,5 @@ necessary. Here is a sample; alter the names:
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Lesser General
library. If this is what you want to do, use the GNU Library General
Public License instead of this License.

12
capture Executable file
View file

@ -0,0 +1,12 @@
#!/bin/sh
# example of capturing target data for smem
# capture a memory data snapshot with realtime priority
mkdir -p $1
chrt --fifo 99 \
cp -a --parents /proc/[0-9]*/{smaps,cmdline,stat} /proc/meminfo /proc/version $1
# build a compressed tarball of snapshot
cd $1/proc
tar czf ../../$1.tgz *

230
smem
View file

@ -1,4 +1,4 @@
#!/usr/bin/env python
#!/usr/bin/python
#
# smem - a tool for meaningful memory reporting
#
@ -8,20 +8,17 @@
# the GNU General Public License version 2 or later, incorporated
# herein by reference.
import re, os, sys, pwd, optparse, errno, tarfile
warned = False
import re, os, sys, pwd, grp, optparse, errno, tarfile
class procdata(object):
def __init__(self, source):
self._ucache = {}
self._gcache = {}
self.source = source and source or ""
self._memdata = None
def _list(self):
return os.listdir(self.source + "/proc")
def _read(self, f):
return open(self.source + '/proc/' + f).read()
return file(self.source + '/proc/' + f).read()
def _readlines(self, f):
return self._read(f).splitlines(True)
def _stat(self, f):
@ -34,50 +31,26 @@ class procdata(object):
def mapdata(self, pid):
return self._readlines('%s/smaps' % pid)
def memdata(self):
if self._memdata is None:
self._memdata = self._readlines('meminfo')
return self._memdata
return self._readlines('meminfo')
def version(self):
return self._readlines('version')[0]
def pidname(self, pid):
try:
l = self._read('%d/stat' % pid)
return l[l.find('(') + 1: l.find(')')]
except:
return '?'
l = self._read('%d/stat' % pid)
return l[l.find('(') + 1: l.find(')')]
def pidcmd(self, pid):
try:
c = self._read('%s/cmdline' % pid)[:-1]
return c.replace('\0', ' ')
except:
return '?'
c = self._read('%s/cmdline' % pid)[:-1]
return c.replace('\0', ' ')
def piduser(self, pid):
try:
return self._stat('%d' % pid).st_uid
except:
return -1
return self._stat('%d/cmdline' % pid).st_uid
def pidgroup(self, pid):
try:
return self._stat('%d' % pid).st_gid
except:
return -1
return self._stat('%d/cmdline' % pid).st_gid
def username(self, uid):
if uid == -1:
return '?'
if uid not in self._ucache:
try:
self._ucache[uid] = pwd.getpwuid(uid)[0]
except KeyError:
self._ucache[uid] = str(uid)
self._ucache[uid] = pwd.getpwuid(uid)[0]
return self._ucache[uid]
def groupname(self, gid):
if gid == -1:
return '?'
if gid not in self._gcache:
try:
self._gcache[gid] = pwd.getgrgid(gid)[0]
except KeyError:
self._gcache[gid] = str(gid)
self._gcache[gid] = pwd.getgrgid(gid)[0]
return self._gcache[gid]
class tardata(procdata):
@ -94,12 +67,12 @@ class tardata(procdata):
def _readlines(self, f):
return self.tar.extractfile(f).readlines()
def piduser(self, p):
t = self.tar.getmember("%d" % p)
t = self.tar.getmember("%s/cmdline" % p)
if t.uname:
self._ucache[t.uid] = t.uname
return t.uid
def pidgroup(self, p):
t = self.tar.getmember("%d" % p)
t = self.tar.getmember("%s/cmdline" % p)
if t.gname:
self._gcache[t.gid] = t.gname
return t.gid
@ -126,32 +99,17 @@ def kernelsize():
d = os.popen("size %s" % options.kernel).readlines()[1]
_kernelsize = int(d.split()[3]) / 1024
except:
try:
# try some heuristic to find gzipped part in kernel image
packedkernel = open(options.kernel).read()
pos = packedkernel.find('\x1F\x8B')
if pos >= 0 and pos < 25000:
sys.stderr.write("Maybe uncompressed kernel can be extracted by the command:\n"
" dd if=%s bs=1 skip=%d | gzip -d >%s.unpacked\n\n" % (options.kernel, pos, options.kernel))
except:
pass
sys.stderr.write("Parameter '%s' should be an original uncompressed compiled kernel file.\n\n" % options.kernel)
pass
return _kernelsize
def pidmaps(pid):
global warned
maps = {}
start = None
seen = False
empty = True
for l in src.mapdata(pid):
empty = False
f = l.split()
if f[-1] == 'kB':
if f[0].startswith('Pss'):
seen = True
f = l.split()
if f[-1] == 'kB':
maps[start][f[0][:-1].lower()] = int(f[1])
elif '-' in f[0] and ':' not in f[0]: # looks like a mapping range
else:
start, end = f[0].split('-')
start = int(start, 16)
name = "<anonymous>"
@ -161,16 +119,10 @@ def pidmaps(pid):
offset=int(f[2], 16),
device=f[3], inode=f[4], name=name)
if not empty and not seen and not warned:
sys.stderr.write('warning: kernel does not appear to support PSS measurement\n')
warned = True
if not options.sort:
options.sort = 'rss'
if options.mapfilter:
f = {}
for m in maps:
if not filters(options.mapfilter, m, lambda x: maps[x]['name']):
if not filter(options.mapfilter, m, lambda x: maps[x]['name']):
f[m] = maps[m]
return f
@ -199,7 +151,7 @@ def units(x):
s = ''
if x == 0:
return '0'
for s in ('', 'K', 'M', 'G', 'T'):
for s in ('', 'K', 'M', 'G'):
if x < 1024:
break
x /= 1024.0
@ -207,27 +159,22 @@ def units(x):
def fromunits(x):
s = dict(k=2**10, K=2**10, kB=2**10, KB=2**10,
M=2**20, MB=2**20, G=2**30, GB=2**30,
T=2**40, TB=2**40)
M=2**20, MB=2**20, G=2**30, GB=2**30)
for k,v in s.items():
if x.endswith(k):
return int(float(x[:-len(k)])*v)
sys.stderr.write("Memory size should be written with units, for example 1024M\n")
sys.exit(-1)
return int(float(x[:len(k)])*v)
def pidusername(pid):
return src.username(src.piduser(pid))
def showamount(a, total):
def showamount(a):
if options.abbreviate:
return units(a * 1024)
elif options.percent:
if total == 0:
return 'N/A'
return "%.2f%%" % (100.0 * a / total)
return "%.2f%%" % (100.0 * a / totalmem())
return a
def filters(opt, arg, *sources):
def filter(opt, arg, *sources):
if not opt:
return False
@ -240,7 +187,7 @@ def pidtotals(pid):
maps = pidmaps(pid)
t = dict(size=0, rss=0, pss=0, shared_clean=0, shared_dirty=0,
private_clean=0, private_dirty=0, referenced=0, swap=0)
for m in maps:
for m in maps.iterkeys():
for k in t:
t[k] += maps[m].get(k, 0)
@ -252,8 +199,8 @@ def pidtotals(pid):
def processtotals(pids):
totals = {}
for pid in pids:
if (filters(options.processfilter, pid, src.pidname, src.pidcmd) or
filters(options.userfilter, pid, pidusername)):
if (filter(options.processfilter, pid, src.pidname, src.pidcmd) or
filter(options.userfilter, pid, pidusername)):
continue
try:
p = pidtotals(pid)
@ -273,7 +220,7 @@ def showpids():
return pidusername(p)
fields = dict(
pid=('PID', lambda n: n, '% 5s', lambda x: len(pt),
pid=('PID', lambda n: n, '% 5s', lambda x: len(p),
'process ID'),
user=('User', showuser, '%-8s', lambda x: len(dict.fromkeys(x)),
'owner of process'),
@ -301,13 +248,13 @@ def showpids():
def maptotals(pids):
totals = {}
for pid in pids:
if (filters(options.processfilter, pid, src.pidname, src.pidcmd) or
filters(options.userfilter, pid, pidusername)):
if (filter(options.processfilter, pid, src.pidname, src.pidcmd) or
filter(options.userfilter, pid, pidusername)):
continue
try:
maps = pidmaps(pid)
seen = {}
for m in maps:
for m in maps.iterkeys():
name = maps[m]['name']
if name not in totals:
t = dict(size=0, rss=0, pss=0, shared_clean=0,
@ -323,8 +270,8 @@ def maptotals(pids):
t['pids'] += 1
seen[name] = 1
totals[name] = t
except EnvironmentError:
continue
except:
raise
return totals
def showmaps():
@ -366,15 +313,15 @@ def showmaps():
def usertotals(pids):
totals = {}
for pid in pids:
if (filters(options.processfilter, pid, src.pidname, src.pidcmd) or
filters(options.userfilter, pid, pidusername)):
if (filter(options.processfilter, pid, src.pidname, src.pidcmd) or
filter(options.userfilter, pid, pidusername)):
continue
try:
maps = pidmaps(pid)
if len(maps) == 0:
continue
except EnvironmentError:
continue
except:
raise
user = src.piduser(pid)
if user not in totals:
t = dict(size=0, rss=0, pss=0, shared_clean=0,
@ -383,7 +330,7 @@ def usertotals(pids):
else:
t = totals[user]
for m in maps:
for m in maps.iterkeys():
for k in t:
t[k] += maps[m].get(k, 0)
@ -463,44 +410,11 @@ def showsystem():
showtable(range(len(l)), fields, columns.split(), options.sort or 'order')
def showfields(fields, f):
if type(f) in (list, set):
print("unknown fields: " + " ".join(f))
else:
print("unknown field %s" % f)
print("known fields:")
for l in sorted(fields):
print("%-8s %s" % (l, fields[l][-1]))
def autosize(columns, fields, rows):
colsizes = {}
for c in columns:
sizes = [1]
if not options.no_header:
sizes.append(len(fields[c][0]))
if (options.abbreviate or options.percent) and 'a' in fields[c][2]:
sizes.append(7)
else:
for r in rows:
sizes.append(len(str(fields[c][1](r))))
colsizes[c] = max(sizes)
overflowcols = set(["command", "map"]) & set(columns)
if len(overflowcols) > 0:
overflowcol = overflowcols.pop()
totnoflow = sum(colsizes.values()) - colsizes[overflowcol]
try:
ttyrows, ttycolumns = os.popen('stty size', 'r').read().split()
ttyrows, ttycolumns = int(ttyrows), int(ttycolumns)
except:
ttyrows, ttycolumns = (24, 80)
maxflowcol = ttycolumns - totnoflow - len(columns)
maxflowcol = max(maxflowcol, 10)
colsizes[overflowcol] = min(colsizes[overflowcol], maxflowcol)
return colsizes
if f != list:
print "unknown field", f
print "known fields:"
for l in sorted(fields.keys()):
print "%-8s %s" % (l, fields[l][-1])
def showtable(rows, fields, columns, sort):
header = ""
@ -516,31 +430,17 @@ def showtable(rows, fields, columns, sort):
if options.bar:
columns.append(options.bar)
mt = totalmem()
st = memory()['swaptotal']
missing = set(columns) - set(fields)
if len(missing) > 0:
showfields(fields, missing)
sys.exit(-1)
if options.autosize:
colsizes = autosize(columns, fields, rows)
else:
colsizes = {}
for n in columns:
if n not in fields:
showfields(fields, n)
sys.exit(-1)
f = fields[n][2]
if 'a' in f:
if n == 'swap':
formatter.append(lambda x: showamount(x, st))
else:
formatter.append(lambda x: showamount(x, mt))
formatter.append(showamount)
f = f.replace('a', 's')
else:
formatter.append(lambda x: x)
if n in colsizes:
f = re.sub(r"[0-9]+", str(colsizes[n]), f)
format += f + " "
header += f % fields[n][0] + " "
@ -559,10 +459,10 @@ def showtable(rows, fields, columns, sort):
return
if not options.no_header:
print(header)
print header
for k,r in l:
print(format % tuple([f(v) for f,v in zip(formatter, r)]))
print format % tuple([f(v) for f,v in zip(formatter, r)])
if options.totals:
# totals
@ -574,8 +474,8 @@ def showtable(rows, fields, columns, sort):
else:
t.append("")
print("-" * len(header))
print(format % tuple([f(v) for f,v in zip(formatter, t)]))
print "-" * len(header)
print format % tuple([f(v) for f,v in zip(formatter, t)])
def showpie(l, sort):
try:
@ -594,12 +494,15 @@ def showpie(l, sort):
s = sum(values)
unused = tm - s
t = 0
while values and (t + values[-1] < (tm * .02) or
values[-1] < (tm * .005)):
c = 0
while values and (t + values[-1 - c] < (tm * .02) or
values[-1 - c] < (tm * .005)):
c += 1
t += values.pop()
labels.pop()
if t:
if c > 1:
values = values[:-c]
labels = labels[:-c]
values.append(t)
labels.append('other')
@ -656,6 +559,12 @@ def showbar(l, columns, sort):
pylab.legend([p[0] for p in pl], key)
pylab.show()
def kernel_version_check():
kernel_release = src.version().split()[2].split('-')[0]
if kernel_release < "2.6.27":
name = os.path.basename(sys.argv[0])
sys.stderr.write(name + " requires a kernel >= 2.6.27\n")
sys.exit(-1)
parser = optparse.OptionParser("%prog [options]")
parser.add_option("-H", "--no-header", action="store_true",
@ -664,8 +573,6 @@ parser.add_option("-c", "--columns", type="str",
help="columns to show")
parser.add_option("-t", "--totals", action="store_true",
help="show totals")
parser.add_option("-a", "--autosize", action="store_true",
help="size columns to fit terminal size")
parser.add_option("-R", "--realmem", type="str",
help="amount of physical RAM")
@ -716,6 +623,8 @@ try:
except:
src = procdata(options.source)
kernel_version_check()
try:
if options.mappings:
showmaps()
@ -725,8 +634,7 @@ try:
showsystem()
else:
showpids()
except IOError:
_, e, _ = sys.exc_info()
except IOError, e:
if e.errno == errno.EPIPE:
pass
except KeyboardInterrupt:

75
smem.8
View file

@ -1,4 +1,4 @@
.TH SMEM 8 "03/15/2010" "" ""
.TH SMEM 8 "07/09/2009" "" ""
.SH NAME
smem \- Report memory usage with shared memory divided proportionally.
@ -16,7 +16,7 @@ is reported as the PSS (Proportional Set Size). The USS and PSS only
include physical memory usage. They do not include memory that has been
swapped out to disk.
Memory can be reported by process, by user, by mapping, or systemwide.
Memory can be reported by process, by user, by mapping, or system\-wide.
Both text mode and graphical output are available.
.SH OPTIONS
@ -34,21 +34,16 @@ you used a tarred set of /proc data saved earlier, possibly on a
different machine. The \-\-kernel and \-\-realmem options let you
specify a couple things that smem cannot discover on its own.
.TP
.BI "\-K " KERNEL ", \-\-kernel=" KERNEL
Path to an uncompressed kernel image. This lets smem include the size
of the kernel's code and statically allocated data in the systemwide
(\-w) output. (To obtain an uncompressed image of a kernel on disk, you
may need to build the kernel yourself, then locate file vmlinux in the
source tree.)
Path to kernel image. This lets smem include the size of the kernel's
code and statically allocated data in the systemwide (-w) output.
.TP
.BI "\-R " REALMEM ", \-\-realmem=" REALMEM
Amount of physical RAM. This lets smem detect the amount of memory used
by firmware/hardware in the systemwide (\-w) output. If provided, it
by firmware/hardware in the systemwide (-w) output. If provided, it
will also be used as the total memory size to base percentages on.
Example: --realmem=1024M
.TP
.BI "\-S " SOURCE ", \-\-source=" SOURCE
@ -59,7 +54,7 @@ using smemcap, and parse the data later on a different machine. If the
running system.
.SS REPORT BY
If none of the following options are included, smem reports memory usage
If none of the following options are include, smem reports memory usage
by process.
.TP
@ -95,10 +90,6 @@ User filter regular expression.
.SS OUTPUT FORMATTING
.TP
.B \-a, \-\-autosize
Size columns to fit terminal size.
.TP
.BI "\-c " COLUMNS ", \-\-columns=" COLUMNS
Columns to show.
@ -144,39 +135,8 @@ Show pie graph.
.PP
.SH REQUIREMENTS
\fBsmem\fP requires:
.IP \(bu 3
Linux kernel providing 'Pss' metric in /proc/<pid>/smaps (generally
2.6.27 or newer).
.IP \(bu
Python 2.x (at least 2.4 or so).
.IP \(bu
The matplotlib library
(only if you want to generate graphical charts).
.SH EMBEDDED USAGE
To capture memory statistics on resource\-constrained systems, the
the \fBsmem\fP source includes a utility named \fBsmemcap\fP.
\fBsmemcap\fP captures all /proc entries required by \fBsmem\fP
and outputs them as an uncompressed .tar file to STDOUT.
\fBsmem\fP can analyze the output using the \fB\-\-source\fP option.
\fBsmemcap\fP is small and does not require Python.
.PP
To use \fBsmemcap\fP:
.IP 1. 3
Obtain the smem source at http://selenic.com/repo/smem
.IP 2.
Compile \fIsmemcap.c\fP for your target system.
.IP 3.
Run \fBsmemcap\fP on the target system and save the output:
.br
smemcap > memorycapture.tar
.IP 4.
Copy the output to another machine and run smem on it:
.br
smem -S memorycapture.tar
.SH NOTES
\fBsmem\fP requires a 2.6.27 or newer kernel.
.SH FILES
.I /proc/$pid/cmdline
@ -189,25 +149,8 @@ smem -S memorycapture.tar
.PP
.I /proc/version
.SH RESOURCES
Main Web Site: http://www.selenic.com/smem
Source code repository: http://selenic.com/repo/smem
Mailing list: http://selenic.com/mailman/listinfo/smem
.SH "SEE ALSO"
.BR free (1),
.BR pmap (1),
.BR proc (5),
.BR ps (1),
.BR top (1),
.BR vmstat (8)
.SH COPYING
Copyright (C) 2008-2009 Matt Mackall. Free use of this software
is granted under the terms of the GNU General Public License
version 2 or later.
.BR free (1), pmap (1)
.SH AUTHOR
\fBsmem\fP was written by Matt Mackall.

22
smemcap.c
View file

@ -32,17 +32,17 @@ int writeheader(int destfd, const char *path, int mode, int uid, int gid,
memset(header, 0, 512);
sprintf(header, "%s", path);
sprintf(header + 100, "%07o", mode & 0777);
sprintf(header + 108, "%07o", uid);
sprintf(header + 116, "%07o", gid);
sprintf(header + 124, "%011o", size);
sprintf(header + 136, "%07o", mtime);
sprintf(header + 100, "%07o\0", mode & 0777);
sprintf(header + 108, "%07o\0", uid);
sprintf(header + 116, "%07o\0", gid);
sprintf(header + 124, "%011o\0", size);
sprintf(header + 136, "%07o\0", mtime);
sprintf(header + 148, " %1d", type);
/* fix checksum */
for (i = sum = 0; i < 512; i++)
sum += header[i];
sprintf(header + 148, "%06o", sum);
sum += header[i];
sprintf(header + 148, "%06o\0 %1d", sum, type);
return write(destfd, header, 512);
}
@ -91,20 +91,18 @@ int archivejoin(const char *sub, const char *name, int destfd)
int main(int argc, char *argv[])
{
int fd;
DIR *d;
struct dirent *de;
struct stat s;
chdir("/proc");
archivefile("meminfo", 1);
archivefile("version", 1);
d = opendir(".");
while ((de = readdir(d)))
while (de = readdir(d))
if (de->d_name[0] >= '0' && de->d_name[0] <= '9') {
stat (de->d_name, &s);
writeheader(1, de->d_name, 0555, s.st_uid,
s.st_gid, 0, s.st_mtime, 5);
writeheader(1, de->d_name, 0555, 0, 0, 0, 0, 5);
archivejoin(de->d_name, "smaps", 1);
archivejoin(de->d_name, "cmdline", 1);
archivejoin(de->d_name, "stat", 1);