Date: Sat, 29 Nov 2008 21:04:34 -0800 From: Sam Leffler <sam@freebsd.org> To: Julian Elischer <julian@elischer.org> Cc: Mykel <Mykel@mWare.ca>, freebsd-net@freebsd.org Subject: Re: Determining counts or size of routing table? (netstat performance?) Message-ID: <49321EE2.6020001@freebsd.org> In-Reply-To: <49321494.90706@elischer.org> References: <4931A5B6.1060000@mWare.ca> <49321494.90706@elischer.org>
next in thread | previous in thread | raw e-mail | index | archive | help
Julian Elischer wrote:
> Mykel wrote:
>> Got a few 6.x machines running OpenBGPd with a few BGP full-feeds and a
>> handful of peers... I'd like to determine the size of the FIB/kernel
>> routing table. OpenBGPd does not give me this data, and on my
>> duallie-Xeon 2.8s, it takes quite a while to use netstat & wc to count.
>>
>> I'm not looking for exact numbers, just something I can poll via NetSNMP
>> and plot in cacti...
>>
>> I looked though netstat, route, sysctl, vmstat, even pored over an
>> snmpwalk... can't find anything.
>> Been asking around, and the only suggestion I've received was to write a
>> daemon that dumps the table and then monitors the changes, but I'm not a
>> programmer, nor could I find any tool in ports that might assist in
>> this.
>>
>> I'd be happy with almost any metric that gives me some absolute
>> reference as to how big my routing table is so I can get some nice
>> pretty graphs done up. Not pounding the system every 60-300 seconds
>> would be very nice.
>>
>> Any suggestions? Or does everyone just pipe netstat? Is there a MIB for
>> sysctl or NetSNMP I'm missing?
>>
>
> no. It's a hard thing to do so that is why it hasn't been done yet.
Perhaps I misunderstand his question but
trouble% vmstat -m |grep routetbl
routetbl 14 2K - 33875 16,32,64,128,256
should show memory allocated to the routing table.
Sam
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?49321EE2.6020001>