[j-nsp] Show task accounting

[av srikant]

Thanks for the information.

So basically to calculate the CPU utilization of the RE at any point of time 
, the best way is to go inside the shell , then execute the "top" command.

Correct me if i am wrong

Regards,
Srikant

>From: Lars Erik Gullerud <lerik at nolink.net>
>To: av srikant <srikant_av at hotmail.com>
>CC: juniper-nsp at puck.nether.net
>Subject: Re: [j-nsp] Show task accounting
>Date: Wed, 29 Dec 2004 17:30:00 +0100
>
>On Wed, 2004-12-29 at 15:23, av srikant wrote:
> > Dear All,
> >
> > I came to know that "show task accounting " in Juniper is same as "show 
>proc
> > cpu" in Cisco Routers. I get the below output using the "show task
> > accounting " command.  My query is that what does the Columns such as 
>user
> > time, system time and longest run actually mean? Where can i find out 
>which
> > task is consuming what amount of the CPU ?
>
>First of all, since JunOS is based on FreeBSD, user/system time
>corresponds to the processor states on a BSD system, i.e. time spent in
>userland (the process itself doing work) and time spent "in-kernel"
>performing kernel tasks relating to this process. I'm sure you can
>google up plenty of good explanations on this particular subject.
>
>That being said, there are plenty of ways to see CPU usage and other
>interesting data on your Routing Engine in addition to accounting. Being
>FreeBSD-based, most normal commands you would use on a UNIX system are
>available from a "start shell", then using ps, top, vmstat, etc. to give
>you any information you need (personally, I tend to drop to a shell and
>use "top").
>
>You can access most of these from within the CLI as well - mostly using
>"show system processes" with various options. E.g. "show system
>processes detail" seem to correspond more or less to doing a "ps -axl"
>in the shell. "show system processes extensive" gives you the output of
>"top -b" (basically a snapshot view of the top output). But again -
>dropping to a shell and using top in interactive mode is my own
>preferred way of judging what uses CPU-time on the RE.
>
>/leg
>
>

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