[H-GEN] Solaris Question (Clarification)

[Ewan Edwards]

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On Friday 12 July 2002 21:56, Scott Pullen wrote:
> [ Humbug *General* list - semi-serious discussions about Humbug and     ]
> [ Unix-related topics. Posts from non-subscribed addresses will vanish. ]
>
> James thanks for that.  I have already tried looking at the netstat man
> pages but it only lists the number of packets and not how "busy" this
> keeps the nics.  The server is a proxy and I want to monitor the traffic
> back into the network and out over the 'net'.

What about writing a script that will give you snapshots of total NIC traffic 
at some specific interval (say 1 sec.) and then use the difference between 
the snapshots to calculate an 'instantaneous' value?  The 'instantaneous' 
value could then be compared with the NIC rated maximum.

This may be a bit crude, but it might be close enough to what you're looking 
for - assuming I've understood your original question correctly.   :-)

>
>
> Everyone keeps telling me that you can't find out how busy the nic is
> because the kernel just routes packets to the nic for transmission and
> is not interested at what speed it is running.  Fair enough, is there a
> tool that will tell me how long the wait queue is for transmission or
> the average service time for a packet? ( similiar to the iostat output
> for disks )  That will more than do to tell me how 'congested' the links
> are.
>
> Do I have to resort to something as crude as a ping response time (which
> has too many variables in it) to at least get some idea.  Or is the only
> way to set up ntp on either end and use those statics (still the
> variables issue)?  Any suggestions (as long as they are constructive
>
> :~)3  ) would be welcome.  Can someone tell me if the kernel even keeps
>
> these types of stats?
>
> Cheers,
>
> Scott.
>
> >netstat -I ge0 1
>
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