Full bandwidth is not used.

Damian Johnson atagar1 at gmail.com
Sat Mar 6 23:42:12 UTC 2010

> I guess arm is using this or something similar to display the bandwidth
> usage of Tor.

Nope, arm just gives a running total of the BW events (ie, if you restart
arm the totals will revert to zero). At the moment I'm unaware of a method
of getting the total bandwidth besides tallying it (though it's included in
a proposal that's currently being batted around on or-dev).

Cheers! -Damian

On Fri, Mar 5, 2010 at 2:54 PM, Paul Menzel <
paulepanter at users.sourceforge.net> wrote:
> Am Freitag, den 05.03.2010, 10:17 -0500 schrieb andrew at torproject.org:
>> On Fri, Mar 05, 2010 at 09:32:59AM +0100,
paulepanter at users.sourceforge.net wrote 1.4K bytes in 39 lines about:
>> : > What did you configure for your bandwidth limits or accountingmax?
>> :
>> : I did not configure them and so the defaults are used. arm is
>> : »(cap: 5 MB, burst: 10 MB)«.
>> Ok, then Tor will figure out how much bandwidth it can reliably provide.
> On what conditions does that depend?
>> If you look at your (datadirectory)/state file, it will show you how
>> much bandwidth tor has been providing over time.
> I guess arm is using this or something similar to display the bandwidth
> usage of Tor.
> Looking at `DataDirectory/state` directly I cannot figure out how to
> interpret the values. Maybe I need tot enable bandwidth accounting.
>       $ man torrc
>       […]
>       DataDirectory/state
>              A set of persistent key-value mappings.  These are documented
>              the file.  These include:
>            - The current entry guards and their status.
>            - The current bandwidth accounting  values  (unused  so  far;
>            below).
>            - When the file was last written
>            - What version of Tor generated the state file
>            - A short history of bandwidth usage, as produced  in  the
>            descriptors.
>       DataDirectory/bw_accounting
>              Used to track bandwidth  accounting  values  (when  the
>              period  starts  and  ends; how much has been read and written
>              far this period).  This file is obsolete, and the  data  is
>              stored  in  the  ’state’ file as well.  Only used when
>              accounting is enabled.
>       […]
> Searching the WWW for »tor state bandwidth« did not help either.
> Thanks,
> Paul
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