Re: [Duplicity-talk] How to set network priority

[edgar . soldin]

hey Andy,

trickle (afaik) works fine and throttles only this one process it is wrapping 
on a box. it is of course not aware of the bandwidth usage of your uplink.

ionice prioritizes access to local block devices only , so no dice there as 
well. correct.

what you are looking for is a QOS(quality of service) solution, which usually 
comes with high priced network hardware. plastic routers usually can't compete 
. still Fritzboxes, common to the german market, allow to define traffic per 
Protocol(UDP/TCP) and Source/Dest.Port and allow to prioritize by those. maybe 
your Asus is capable of something similar?

good luck.. ede/duply.net

On 10.09.2021 19:15, Andy Hairston via Duplicity-talk wrote:
> I tried using trickle. It has the same effect as limiting the bandwidth for 
> that entire machine. ionice seems to be for setting local I/O priority.
>
> I'm looking for a way to give the traffic from other machines on my network 
> priority over Duplicity (or the machine Duplicity is running on). That way 
> Duplicity can use the full bandwidth when other devices don't need it (ex. 4 
> AM) but not choke out other traffic. Which is why I tried QoS settings on 
> router, and setting DSCP priority.
>
> Any ideas?
>
> On Fri, Sep 10, 2021, 11:46 AM Kenneth Loafman <kenneth@loafman.com 
> <mailto:kenneth@loafman.com>> wrote:
>
>     Hi,
>
>     Duplicity does not have an option to set IO priority, however, if you run 
> ionice <http://manpages.ubuntu.com/manpages/bionic/en/man1/ionice.1.html>, 
> you should get what you need.
>
>     Another option would be trickle 
> <http://manpages.ubuntu.com/manpages/bionic/man1/trickle.1.html>.  It deals 
> with bandwidth shaping.
>
>     Google searches yield a lot of answers to your question.
>
>     ...Ken
>
>
>     On Thu, Sep 9, 2021 at 11:17 AM Andy Hairston via Duplicity-talk 
> <duplicity-talk@nongnu.org <mailto:duplicity-talk@nongnu.org>> wrote:
>
>         I'm using Duplicity under CentOS 7 to back up to Backblaze B2, 
> running from my home network. Due to the size of my backup and my 
> comparatively slow upload speed (1.8 Mbps), it takes several weeks to run a 
> full backup. If I let it run unthrottled, it hogs all the bandwidth - all 
> other devices on my network have difficulty connecting to outside websites, 
> etc.
>
>         On my router (Asus RT-ACRH17), I tried setting outgoing traffic from 
> that machine to lowest priority, but apparently the router's QoS isn't 
> actually functional; all the combinations of settings I've tried (including 
> those provided by Asus support) have no effect whatsoever.
>
>         I've also tried using iptables to set the DSCP priority to CS1. This 
> doesn't seem to have any effect either, though I did confirm (on the CentOS 
> machine) that the priority is being set.
>
>         For the moment, I've used my router settings (Bandwidth Limiter 
> instead of proper QoS) to throttle that particular computer down to 1.4 Mbps 
> maximum. Two downsides - this increases how long the backup takes, and if 
> other devices need more than 0.4 Mbps total then they get bogged down again.
>
>         Is there a way of setting the _network_ (not processor) priority for 
> Duplicity to "lowest", so all other traffic gets to go first? Does this 
> require something specific in the router to get it to work?
>
>         albegadeep
>         _______________________________________________
>         Duplicity-talk mailing list
>         Duplicity-talk@nongnu.org <mailto:Duplicity-talk@nongnu.org>
>         https://lists.nongnu.org/mailman/listinfo/duplicity-talk 
> <https://lists.nongnu.org/mailman/listinfo/duplicity-talk>
>
>
> _______________________________________________
> Duplicity-talk mailing list
> Duplicity-talk@nongnu.org
> https://lists.nongnu.org/mailman/listinfo/duplicity-talk
>