--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/stat.rst	Sun Sep 04 09:43:28 2011 +0300
@@ -0,0 +1,212 @@
+.. -*- coding: utf-8 -*-
+
+================
+ OS statistics.
+================
+.. contents::
+
+CPU consumption.
+================
+
+Linux interactive.
+------------------
+::
+
+  $ top
+  $ htop
+
+  http://htop.sourceforge.net/
+                home page
+
+Linux static.
+-------------
+::
+
+  $ ps -eo %cpu,pid,cmd --sort=%cpu
+
+FreeBSD interactive.
+--------------------
+::
+
+  $ top
+
+Windows.
+--------
+::
+
+  cmd> taskmgr
+
+Solaris.
+--------
+
+Interactive::
+
+  $ perfmeter
+
+Static::
+
+  $ prstat
+
+  $ mpstat <num> <seconds>
+
+See
+
+  http://developers.sun.com/solaris/articles/prstat.html
+                Topping top in Solaris 8 with prstat.
+
+Memory consumption.
+===================
+
+Linux interactive.
+------------------
+::
+
+  $ top
+
+Linux static.
+-------------
+
+Vitual and resident memory size::
+
+  $ ps -eo vsz,rsz,pid,cmd --sort=vsz --width 3000
+
+Swap size and usage::
+
+  $ free
+
+FreeBSD interactive.
+--------------------
+::
+
+  $ top
+
+FreeBSD static.
+---------------
+
+Swap size::
+
+  $ swapinfo
+  $ pstat -s
+
+Swap usage::
+
+  $ vmstat
+
+Solaris.
+--------
+::
+
+  $ sar -g
+
+  $ vmstat
+
+  $ prstat -s size
+
+  $ prstat -a
+
+Windows.
+--------
+::
+
+  cmd> taskmgr
+
+and add colums TODO.
+
+Opened file by process.
+=======================
+
+Linux.
+------
+::
+
+  $ lsof -p <pid>
+
+FreeBSD.
+--------
+::
+
+  $ fstat -p <pid>
+
+Windows interactive.
+--------------------
+
+procexp.exe from Sysinternals.
+
+Windows static.
+---------------
+
+handle.exe from Sysinternals::
+
+  cmd> handle -p 1265
+  C: File  (RW-)   C:\Program Files\Common Files\GTK\2.0\bin
+  288: Section       \BaseNamedObjects\mmGlobalPnpInfo
+
+Opened file by user.
+====================
+
+FreeBSD.
+--------
+::
+
+  $ fstat -u <user>
+
+Opened network connection by process.
+=====================================
+
+Linux.
+------
+::
+
+  $ lsof -i[46][protocol][@{hostname|hostaddr}][:{service|port}]
+
+46 - IPV4 or IPV6
+protocol - tcp, udp
+
+FreeBSD.
+--------
+
+TODO
+
+Windows.
+--------
+::
+
+  cmd> netstat -o
+  Type Local addr   Remote addr        State         PID
+  TCP  user:1154    localhost:1153     ESTABLISHED   1512
+  TCP  user:5152    localhost:1052     CLOSE_WAIT    1524
+  TCP  user:1036    services.int:5222  ESTABLISHED   1188
+
+Locked file by process.
+=======================
+
+Linux.
+------
+::
+
+  $ lsof <file>
+
+FreeBSD.
+--------
+
+TODO
+
+Solaris.
+--------
+
+TODO
+
+Windows interactive.
+--------------------
+
+procexp.exe from Sysinternals.
+
+Windows static.
+---------------
+
+handle.exe from Sysinternals::
+
+  cmd> handle d:\home
+  ispell.exe         pid: 244     784: D:\home\drivers\token_api\src
+  Far.exe            pid: 432     10C: D:\home\drivers\token_api
+