nice bandwidth usage
in [General Linux]
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From: Tristan Miller on 1 Feb 2010 07:05 Greetings. There exists the "nice" command which schedules processes with lower CPU priority, and the "ionice" command to give processes lower I/O priority. These prevent processes from hogging the CPU or disk. Is there a similar command for giving a process lower network priority? I don't mean just throttling the bandwidth to a fixed level, but actually letting a process use as much bandwidth as it wants provided that no other higher-priority process is trying to upload or download something. This sort of thing would be very useful to use in conjunction with software updaters, BitTorrent clients, large rsync jobs, etc. that one would want to run in the background and not disrupt one's web browsing experience. Regards, Tristan -- _ _V.-o Tristan Miller >< Space is limited / |`-' -=-=-=-=-=-=-=-=-=-=-=-=-=-=- <> In a haiku, so it's hard (7_\\ http://www.nothingisreal.com/ >< To finish what you
From: J G Miller on 1 Feb 2010 09:15 On Mon, 01 Feb 2010 12:05:43 +0000, Tristan Miller wrote: > This sort of thing would be very useful to use in conjunction with > software updaters, BitTorrent clients, large rsync jobs, etc. There are two approaches to this problem. You can use eg a BitTorrent client which allows you to adjust the bandwidth usage eg Deluge or Transmission, the latter even having the feature of a button to click to go to a Turtle mode for when you just need most of the bandwidth for immediate use by something else, and eg for rsync use the --bwlimit=KBPS command line flag. The other approach is to use QOS tuning on your router or iptables implementation. See the iptables manual page for the CLASSIFY directive. This is rather more complicated and laborious to implement but is the way to "enforce" limits on recalcitrant users whether or not they implement the "voluntary" approach via the program settings mentioned above.
From: Tristan Miller on 1 Feb 2010 10:03 Greetings. In article <1265033701_57(a)vo.lu>, J G Miller wrote: > On Mon, 01 Feb 2010 12:05:43 +0000, Tristan Miller wrote: > >> This sort of thing would be very useful to use in conjunction with >> software updaters, BitTorrent clients, large rsync jobs, etc. > > There are two approaches to this problem. > > You can use eg a BitTorrent client which allows you to adjust the > bandwidth usage eg Deluge or Transmission, the latter even having the > feature of a button to click to go to a Turtle mode for when you > just need most of the bandwidth for immediate use by something else, > and eg for rsync use the --bwlimit=KBPS command line flag. > > The other approach is to use QOS tuning on your router or iptables > implementation. See the iptables manual page for the CLASSIFY > directive. > > This is rather more complicated and laborious to implement but is > the way to "enforce" limits on recalcitrant users whether or not > they implement the "voluntary" approach via the program settings > mentioned above. Doesn't iptables work on a per-port or per-protocol basis? If so, that approach doesn't really solve my problem, since there will be some HTTP connections (like YaST's software updater) I want "niced" and others (like my web browser) which I don't. How is iptables going to know which is which? Also, your solution for rsync isn't applicable. I don't want to fix the bandwidth limit; I want it to dynamically adjust itself, taking all the bandwidth when possible and cutting back when higher-priority processes are using it. Regards, Tristan -- _ _V.-o Tristan Miller >< Space is limited / |`-' -=-=-=-=-=-=-=-=-=-=-=-=-=-=- <> In a haiku, so it's hard (7_\\ http://www.nothingisreal.com/ >< To finish what you
From: Jon Solberg on 1 Feb 2010 10:19 On 2010-02-01, Tristan Miller <psychonaut(a)nothingisreal.com> wrote: > Greetings. > > There exists the "nice" command which schedules processes with lower CPU > priority, and the "ionice" command to give processes lower I/O priority. > These prevent processes from hogging the CPU or disk. > > Is there a similar command for giving a process lower network > priority? I don't mean just throttling the bandwidth to a fixed > level, but actually letting a process use as much bandwidth as it > wants provided that no other higher-priority process is trying to > upload or download something. This sort of thing would be very useful > to use in conjunction with software updaters, BitTorrent clients, > large rsync jobs, etc. that one would want to run in the background > and not disrupt one's web browsing experience. Not exactly what you're asking for, but I've previously used http://lartc.org/wondershaper/ with great success to let my interactive ssh sessions (e.g. decrease latency) get priority over bulk downloads However, it hasn't been updated in a _long_ time and I'm not even sure it helps much today. -- Jon Solberg (remove "nospam." from email address).
From: J G Miller on 1 Feb 2010 12:06
On Mon, 01 Feb 2010 15:03:56 +0000, Tristan Miller wrote: > How is iptables going to know which is which? How do you know which is which and how does your broswer know which is which and YasT know which is which? You would have to configure IPTABLES to use a combined rule limiting the urgency of packets which are of both type HTTP and coming from the address of the YaST repository. > I want it to dynamically adjust itself, taking all the bandwidth > when possible and cutting back when higher-priority processes > are using it. So you are looking for a automagical-does-all-I-want wonder tool. Have you done a web search using such terms as "bandwidth limiter", "traffic shaper", etc? If you cannot find anything suitable they you are going to have to write the software yourself. |