Re: Showing network speed in emacs mode line.

[Ken Hori <fplemma@gmail.com>]

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I don't have time to dig into it, but to give you a clue, the target line in
/proc/net/dev is:

  eth0:3819769008 3075291    0    0    0     0          0         0
1353810812 2234060    0    0    0     0       0          0

(network-speed-get-rx-tx-bytes)
=> (["eth0" 3819769008 1353810812 0.0 0.0])

I don't think the last two numbers are correct.


On Tue, Jan 19, 2010 at 4:31 PM, Vicente Hernando Ara <bizenton@gmail.com>wrote:

> Hi Ken,
>
> this elisp program parses /proc/net/dev file searching for the line
> containing the interface you selected. Then it gets first and ninth
> numbers (for received and transmitted bytes) and performs a
> subtraction and a division to calculate speed)
>
> I would check that /proc/net/dev file to know if it changes adequately
> when you are online.
>
> I this gives us no clue I would add a (message "hello") to
> network-speed-update-handler and network-speed-get-rx-tx-bytes
> functions. network-speed-update-handler is the function called every
> network-speed-update-interval seconds and
> network-speed-get-rx-tx-bytes parses the file and store values in a
> list of vectors.
>
>
>
> On 20/01/2010, Ken Hori <fplemma@gmail.com> wrote:
> > interesting elisp. but the only thing that gets appended to modeline is
> >
> > [eth0 rx:0 B/s tx:0 B/s]
> >
> > there is no change whatsoever even though i am online (otherwise you
> wouldnt
> > receive this email).
> >
> >
> > On Tue, Jan 19, 2010 at 3:00 PM, Vicente Hernando Ara
> > <bizenton@gmail.com>wrote:
> >
> >> Hi to all the emacs community!
> >>
> >> I have written an elisp file(attached to this mail) that shows network
> >> speed in emacs mode line.
> >>
> >> Just to make it work:
> >>
> >> M-x load-file RET /path/to/network-speed.el
> >> M-x network-speed-start
> >>
> >> and to stop it showing in the mode line
> >> M-x network-speed-stop
> >>
> >> There are several customizable variables. e.g in my .emacs file :
> >> (custom-set-variables
> >> ....
> >>  '(network-speed-update-interval 2)   ; Shows network speed every 2
> >> seconds.
> >>  '(network-speed-interface-list (list "ppp0" "eth0")))  ; Network
> >> interfaces to be shown in mode line.
> >>  '(network-speed-precision 1) ; Number of digits to be shown after
> decimal
> >> point.
> >>  '(network-speed-format-string " [%NI %AX %AB] ") ;  or i.e: "[%NI
> rx:%RX
> >> tx:%TX]"
> >>  '(network-speed-interface-list (list "ppp0" "eth0"))  ; Network
> >> interfaces
> >> to be shown in mode line.
> >>
> >> network-speed-format-string can be customized to show:
> >> %NI : network interface name
> >> %RB: received bytes
> >> %TB: transmitted bytes
> >> %AB: all received + transmitted bytes.
> >> %RX: received byte speed.
> >> %TX: transmitted byte speed.
> >> %AX: total byte speed.
> >> %%%: escape secuence for % character.
> >>
> >> I hope you test it and enjoy!
> >> Any constructive criticism is welcomed.
> >> I also would be glad about signing FSF papers for this file if it is
> >> considered worthy.
> >>
> >> Kind regards,
> >> Vicente.
> >>
> >
>

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