topic Re: Network device utilization in Operating System - HP-UX

Network device utilization

Wagner Villela — Thu, 06 Jun 2002 12:02:08 GMT

Dear friends

I need to know which process is more using a network device in determined moment (lan2 or lan3). How i can make this? I use hp-ux 10.20.

Thank you

Wagner

Re: Network device utilization

Helen French — Thu, 06 Jun 2002 12:14:44 GMT

I would use GlancePlus -> Network for getting this information. You will get all information per interface (packets in, packets out, errors, load etc) fro the menus:

# gpm

Another command would be:

# netstat (see man pages for details)

Re: Network device utilization

sven verhaegen — Thu, 06 Jun 2002 12:38:34 GMT

Hi

what you are doing is very hard to accomplish , the data from Glance is normally information per interface or information per process , I have no knowledge of information linking the interface to the processes themselfs , that is because in fact there is no correlation between a lancard and a process , it is the routing stack which directs the process request to the appropriate port of the system , I doubt if even perfview is able to make that kind of asessement , Glance is indeed your best shot but as said I'm not aware of a function able to tdo this in Glance

Re: Network device utilization

Wagner Villela — Thu, 06 Jun 2002 12:56:03 GMT

Sven

I think you is right.

Through the Glance is not possible to identify which process cause my switch freezing. We have a broadcast storm in determined moments.

The maximum that i obtain is to see through glance the incredible increase in the number of packages passing through for a network device. I don??t obtain to identify the responsible process therefore.

Thanks

Wagner

Re: Network device utilization

Stefan Farrelly — Thu, 06 Jun 2002 13:12:49 GMT

The graphical version of glance, gpm, will show this for you - in a roundabout way.

Run gpm, bring up process list, add metrics non disc logical reads and non disk logical writes. Sort columns so processes are listed by these 2 metrics (and you'll probably have to arrange columns to show these 2 first, then pid and user). Drop measurement interval to 5 seconds or less, then when a user does a large ftp (for example) either reading or pushing, it will show up under these 2 metrics above. Basically it sorts processes by network usage. My test doing large ftp's showed up easily on the above example - I could see which user was doing them and if sending or receiving ftp files.

This should help you find the process(es) hitting your network hard.

Re: Network device utilization

Lukas Grijander — Thu, 06 Jun 2002 13:24:27 GMT

Hi.

whith lsof you can list all processes "attached" to an ip address :

lsof -i @192.168.1.1

Hope it helps.
Rafa