doc: remove outdated nstat/rtstat documentation
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
diff --git a/doc/Makefile b/doc/Makefile
index d3fdc2b..38be3d9 100644
--- a/doc/Makefile
+++ b/doc/Makefile
@@ -1,4 +1,4 @@
-PSFILES=ip-cref.ps api-ip6-flowlabels.ps nstat.ps rtstat.ps tc-filters.ps
+PSFILES=ip-cref.ps api-ip6-flowlabels.ps tc-filters.ps
# tc-cref.ps
# api-rtnl.tex api-pmtudisc.tex api-news.tex
# iki-netdev.ps iki-neighdst.ps
diff --git a/doc/nstat.sgml b/doc/nstat.sgml
deleted file mode 100644
index 48cacc6..0000000
--- a/doc/nstat.sgml
+++ /dev/null
@@ -1,110 +0,0 @@
-<!doctype linuxdoc system>
-
-<article>
-
-<title>NSTAT, IFSTAT and RTACCT Utilities
-<author>Alexey Kuznetsov, <tt/kuznet@ms2.inr.ac.ru/
-<date>some_negative_number, 20 Sep 2001
-<abstract>
-<tt/nstat/, <tt/ifstat/ and <tt/rtacct/ are simple tools helping
-to monitor kernel snmp counters and network interface statistics.
-</abstract>
-
-<p> These utilities are very similar, so that I describe
-them simultaneously, using name <tt/Xstat/ in the places which apply
-to all of them.
-
-<p>The format of the command is:
-
-<tscreen><verb>
- Xstat [ OPTIONS ] [ PATTERN [ PATTERN ... ] ]
-</verb></tscreen>
-
-<p>
-<tt/PATTERN/ is shell style pattern, selecting identifier
-of SNMP variables or interfaces to show. Variable is displayed
-if one of patterns matches its name. If no patterns are given,
-<tt/Xstat/ assumes that user wants to see all the variables.
-
-<p> <tt/OPTIONS/ is list of single letter options, using common unix
-conventions.
-
-<itemize>
-<item><tt/-h/ - show help page
-<item><tt/-?/ - the same, of course
-<item><tt/-v/, <tt/-V/ - print version of <tt/Xstat/ and exit
-<item><tt/-z/ - dump zero counters too. By default they are not shown.
-<item><tt/-a/ - dump absolute values of counters. By default <tt/Xstat/
- calculates increments since the previous use.
-<item><tt/-s/ - do not update history, so that the next time you will
- see counters including values accumulated to the moment
- of this measurement too.
-<item><tt/-n/ - do not display anything, only update history.
-<item><tt/-r/ - reset history.
-<item><tt/-d INTERVAL/ - <tt/Xstat/ is run in daemon mode collecting
- statistics. <tt/INTERVAL/ is interval between measurements
- in seconds.
-<item><tt/-t INTERVAL/ - time interval to average rates. Default value
- is 60 seconds.
-<item><tt/-e/ - display extended information about errors (<tt/ifstat/ only).
-</itemize>
-
-<p>
-History is just dump saved in file <tt>/tmp/.Xstat.uUID</tt>
-or in file given by environment variables <tt/NSTAT_HISTORY/,
-<tt/IFSTAT_HISTORY/ and <tt/RTACCT_HISTORY/.
-Each time when you use <tt/Xstat/ values there are updated.
-If you use patterns, only the values which you _really_ see
-are updated. If you want to skip an unintersting period,
-use option <tt/-n/, or just output to <tt>/dev/null</tt>.
-
-<p>
-<tt/Xstat/ understands when history is invalidated by system reboot
-or source of information switched between different instances
-of daemonic <tt/Xstat/ and kernel SNMP tables and does not
-use invalid history.
-
-<p> Beware, <tt/Xstat/ will not produce sane output,
-when many processes use it simultaneously. If several processes
-under single user need this utility they should use environment
-variables to put their history in safe places
-or to use it with options <tt/-a -s/.
-
-<p>
-Well, that's all. The utility is very simple, but nevertheless
-very handy.
-
-<p> <bf/Output of XSTAT/
-<p> The first line of output is <tt/#/ followed by identifier
-of source of information, it may be word <tt/kernel/, when <tt/Xstat/
-gets information from kernel or some dotted decimal number followed
-by parameters, when it obtains information from running <tt/Xstat/ daemon.
-
-<p>In the case of <tt/nstat/ the rest of output consists of three columns:
-SNMP MIB identifier,
-its value (or increment since previous measurement) and average
-rate of increase of the counter per second. <tt/ifstat/ outputs
-interface name followed by pairs of counter and rate of its change.
-
-<p> <bf/Daemonic Xstat/
-<p> <tt/Xstat/ may be started as daemon by any user. This makes sense
-to avoid wrapped counters and to obtain reasonable long counters
-for large time. Also <tt/Xstat/ daemon calculates average rates.
-For the first goal sampling interval (option <tt/-d/) may be large enough,
-f.e. for gigabit rates byte counters overflow not more frequently than
-each 40 seconds and you may select interval of 20 seconds.
-From the other hand, when <tt/Xstat/ is used for estimating rates
-interval should be less than averaging period (option <tt/-t/), otherwise
-estimation loses in quality.
-
-Client <tt/Xstat/, before trying to get information from the kernel,
-contacts daemon started by this user, then it tries system wide
-daemon, which is supposed to be started by superuser. And only if
-none of them replied it gets information from kernel.
-
-<p> <bf/Environment/
-<p> <tt/NSTAT_HISTORY/ - name of history file for <tt/nstat/.
-<p> <tt/IFSTAT_HISTORY/ - name of history file for <tt/ifstat/.
-<p> <tt/RTACCT_HISTORY/ - name of history file for <tt/rtacct/.
-
-</article>
diff --git a/doc/rtstat.sgml b/doc/rtstat.sgml
deleted file mode 100644
index 07391c3..0000000
--- a/doc/rtstat.sgml
+++ /dev/null
@@ -1,52 +0,0 @@
-<!doctype linuxdoc system>
-
-<article>
-
-<title>RTACCT Utility
-<author>Robert Olsson
-<date>some_negative_number, 20 Dec 2001
-
-<p>
-Here is some code for monitoring the route cache. For systems handling high
-network load, servers, routers, firewalls etc the route cache and its garbage
-collection is crucial. Linux has a solid implementation.
-
-<p>
-The kernel patch (not required since linux-2.4.7) adds statistics counters
-from route cache process into
-/proc/net/rt_cache_stat. A companion user mode program presents the statistics
-in a vmstat or iostat manner. The ratio between cache hits and misses gives
-the flow length.
-
-<p>
-Hopefully it can help understanding performance and DoS and other related
-issues.
-
-<p> An URL where newer versions of this utility can be (probably) found
-is ftp://robur.slu.se/pub/Linux/net-development/rt_cache_stat/
-
-
-<p><bf/Description/
-
-<p>The format of the command is:
-
-<tscreen><verb>
- rtstat [ OPTIONS ]
-</verb></tscreen>
-
-<p> <tt/OPTIONS/ are:
-
-<itemize>
-
-<item><tt/-h/, <tt/-help/ - show help page and version of the utility.
-
-<item><tt/-i INTERVAL/ - interval between snapshots, default value is
-2 seconds.
-
-<item><tt/-s NUMBER/ - whether to print header line. 0 inhibits header line,
-1 prescribes to print it once and 2 (this is default setting) forces header
-line each 20 lines.
-
-</itemize>
-
-</article>
