lnstat - linux networking statistics
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(C) 2004 Harald Welte <laforge@gnumonks.org
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======================================================================
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This tool is a generalized and more feature-complete replacement for the old
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'rtstat' program.
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In addition to routing cache statistics, it supports any kind of statistics
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the linux kernel exports via a file in /proc/net/stat. In a stock 2.6.9
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kernel, this is
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per-protocol neighbour cache statistics
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(ipv4, ipv6, atm, decnet)
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routing cache statistics
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(ipv4)
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connection tracking statistics
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(ipv4)
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Please note that lnstat will adopt to any additional statistics that might be
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added to the kernel at some later point
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I personally always like examples more than any reference documentation, so I
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list the following examples. If somebody wants to do a manpage, feel free
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to send me a patch :)
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EXAMPLES:
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In order to get a list of supported statistics files, you can run
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lnstat -d
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It will display something like
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/proc/net/stat/arp_cache:
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1: entries
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2: allocs
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3: destroys
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[...]
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/proc/net/stat/rt_cache:
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1: entries
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2: in_hit
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3: in_slow_tot
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You can now select the files/keys you are interested by something like
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lnstat -k arp_cache:entries,rt_cache:in_hit,arp_cache:destroys
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arp_cach|rt_cache|arp_cach|
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entries| in_hit|destroys|
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6| 6| 0|
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6| 0| 0|
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6| 2| 0|
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You can specify the interval (e.g. 10 seconds) by:
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lnstat -i 10
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You can specify to only use one particular statistics file:
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lnstat -f ip_conntrack
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You can specify individual field widths
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lnstat -k arp_cache:entries,rt_cache:entries -w 20,8
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You can specify not to print a header at all
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lnstat -s 0
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You can specify to print a header only at start of the program
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lnstat -s 1
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You can specify to print a header at start and every 20 lines:
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lnstat -s 20
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You can specify the number of samples you want to take (e.g. 5):
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lnstat -c 5
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