Development Team/Profiling
< Development Team
Revision as of 18:42, 21 February 2010 by Patrol (talk | contribs) (moved Anal bleaching 15/Profiling to Development Team/Profiling over redirect: revert)
Memory
ps_mem
Try to determine how much RAM is currently being used per program. The shared RAM is problematic to calculate, and this script automatically selects the most accurate method available for your kernel.
- original script at http://www.pixelbeat.org/scripts/ps_mem.py
The following patch makes the script output the processes pids and cmd-lines instead of their names when possible.
- __patched__ version at http://dev.laptop.org/~rlucchese/utils/ps_mem.py
- patch:
--- ps_mem.py.orig 2008-08-29 09:30:29.000000000 +0200 +++ ps_mem 2008-08-29 09:43:49.000000000 +0200 @@ -117,17 +117,23 @@ return (Private, Shared) def getCmdName(pid): - cmd = file("/proc/%d/status" % pid).readline()[6:-1] - exe = os.path.basename(os.path.realpath("/proc/%d/exe" % pid)) - if exe.startswith(cmd): - cmd=exe #show non truncated version - #Note because we show the non truncated name - #one can have separated programs as follows: - #584.0 KiB + 1.0 MiB = 1.6 MiB mozilla-thunder (exe -> bash) - # 56.0 MiB + 22.2 MiB = 78.2 MiB mozilla-thunderbird-bin + cmd = file("/proc/%d/cmdline" % pid).readline() + if len(cmd): + # cmdline has a bogus format + cmd_temp = '' + for i in range(0,len(cmd) -1): + if ord(cmd[i])<ord(' ') or ord(cmd[i])>ord('~'): + cmd_temp += ' ' + else: + cmd_temp += cmd[i] + + cmd = cmd_temp + else: + cmd = file("/proc/%d/status" % pid).readline()[6:-1] return cmd cmds={} +pids={} shareds={} count={} for pid in os.listdir("/proc/"): @@ -155,10 +161,8 @@ else: shareds[cmd]=shared cmds[cmd]=cmds.setdefault(cmd,0)+private - if count.has_key(cmd): - count[cmd] += 1 - else: - count[cmd] = 1 + + pids[cmd] = pid #Add shared mem for each program total=0 @@ -185,16 +189,16 @@ else: return cmd -print " Private + Shared = RAM used\tProgram \n" +print " Private + Shared = RAM used\tPID\tProgram \n" for cmd in sort_list: - print "%8sB + %8sB = %8sB\t%s" % (human(cmd[1]-shareds[cmd[0]]), + print "%8sB + %8sB = %8sB\t%d\t%s" % (human(cmd[1]-shareds[cmd[0]]), human(shareds[cmd[0]]), human(cmd[1]), - cmd_with_count(cmd[0], count[cmd[0]])) + pids[cmd[0]], cmd[0]) if have_pss: print "-" * 33 print " " * 24 + "%8sB" % human(total) print "=" * 33 -print "\n Private + Shared = RAM used\tProgram \n" +print " Private + Shared = RAM used\tPID\tProgram \n" #Warn of possible inaccuracies #2 = accurate & can total