Re: How can I figure out what processes are consuming my upload bandwidth?

From	Alan Baker <alangbaker@telus.net>
Newsgroups	comp.sys.mac.system
Subject	Re: How can I figure out what processes are consuming my upload bandwidth?
Date	2014-01-11 18:18 -0800
Organization	Datemas.de http://www.news.datemas.de
Message-ID	<lasu17$dr2$1@news.datemas.de> (permalink)
References	<28b0e489-8992-4e45-9349-8d091bdb94ca@googlegroups.com> <vilain-A40A04.16475511012014@news.individual.net>

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On 2014-01-12 00:47:55 +0000, Michael Vilain said:

> In article <laphn8$nqf$2@dont-email.me>, Ted Lee <tmplee@gmail.com>
> wrote:
> 
>> On 1/10/14, 12:42 PM, Michael Vilain wrote:
>>> Unless you can code and have a couple months to write your tool, you're
>>> stuck with command line tools.
>> 
>> 
>> Not entirely true.  Activity monitor does (can) show the number of
>> bytes/packets sent/received for each process.  True, it doesn't give the
>> rate (bytes/packets per second) but you ought to be able to eyeball
>> compute that.  It looks like it starts counting from when a process is
>> created, so you'd have to logout/login to reset all the counters for all
>> user processes to zero.  I suppose if you do a restart that will reset
>> the counters for any system processes that aren't associated with a user.
> 
> Activity Monitor is probably using the same counters that netstat and
> nettop use.  They aren't historical in that if you quit a process like
> Safari then restart it, the traffic counters for that connection will
> end.  I don't even think sar accounting will track network traffic
> except on a per interface basis.
> 
> I stand corrected. When I looked at Activity Monitor's per-process
> output, it didn't have per process network I/O.

Prior to Mavericks, I don't think that Activity Monitor had per process 
network I/O data, but Mavericks most definitely has it.

You might want to check what columns you can add to the display on 
prior versions of Mac OS X. Right-click on the column heading area and 
you'll get a menu showing all the columns both currently selected and 
available.

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