[hobbit] bandwidth usage in bytes on Linux

[Henrik Stoerner]

On Thu, Nov 10, 2005 at 06:46:49AM -0600, Rich Smrcina wrote:
>
> Jesper Johnson wrote:
> >I'm looking for a way to create graphs for hobbit on Linux to monitor 
> >network bandwidth usage, separately on each interface (eth0,eth1). The 
>
> There is a very well described MRTG interface for Hobbit.  I just 
> implemented it at a customer site and it works as advertised.  The URL 
> is in the help.

MRTG would indeed solve this problem.

But it might still make some sense to have the Linux hobbitclient 
collect the data from /sbin/ifconfig. It does have byte counters:

eth0      Link encap:Ethernet  HWaddr 00:0E:A6:CE:D6:85  
          inet addr:172.16.10.100  Bcast:172.16.10.255  Mask:255.255.255.0
          inet6 addr: fe80::20e:a6ff:fece:d685/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:7935102 errors:0 dropped:0 overruns:0 frame:0
          TX packets:7943900 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:2210282597 (2.0 GiB)  TX bytes:2268014990 (2.1 GiB)
          Interrupt:17 

I dont think Hobbit should use these to populate the tcpOutDataBytes and
tcpInInorderBytes fields in the netstat rrd - the ifconfig counters are
per network interface, where the rest of the netstat data are global
counters. 

But perhaps there should be a completely separate set of RRD files, with 
one graph per network interface ?


Regards,
Henrik