Possible to reduce bandwidth

FF2 · 01-03-2011, 12:18 AM

DSL modem.

It appears that when Calibre is running a job, it really grabs a hunk of what I will call bandwidth (for want to a better understanding of what I'm talking about) and makes it hard for other inet apps to do much or slows them down a lot. For instance at this time, Calibre is emailing a file (gocomics, sort of large) to my k3. The other half was trying to check her email but having a rough time of it. She is using a different computer but the same router/modem using wifi.

Is there a control to slice and dice the amount of time/bytes/whatever that Calibre it using and apportion it out to other apps.

I did a quick search but did not see anything and since a job is running I cannot get to Preferences at this time.

Thanks in advance

Oh, PS: yes, Calibre is normally set to run overnight but something interferred and so it is running in "prime" time. And this has been necessary occasionally so an answer for allocating would still be helpful.

kovidgoyal · 01-03-2011, 12:21 AM

What you're looking for QoS routing. Most advanced routers allow you to throttle the traffic from any given client connected to the network.

calibre itself has no bandwidth throttling code.

FF2 · 01-03-2011, 12:47 AM

Thanks for the quick reply. I'm googling as I type. My router is possibly a bit older Linksys so I will check it out.

Again, thanks.

DoctorOhh · 01-03-2011, 02:52 AM

Quote:

Originally Posted by FF2

Thanks for the quick reply. I'm googling as I type. My router is possibly a bit older Linksys so I will check it out.

Depending on the model/version of your Linksys it may well be possible to flash it with a third party router software. I flashed mine with DD-wrt and it has QoS routing.

FF2 · 01-03-2011, 10:08 AM

Actually, exploring around I found it does have such settings under, I believe, its GAMING settings.

What I'm not clear on is whether it will throttle back the entire COMPUTER or can I select Calibre (or other apps). I can see if one has a dedicated Calibre-computer, throttling it back but since I'm also using the same computer for browsing the web and email, I would not want it very slow for those other needs. But maybe I would not notice unless I'm downloading a big attachment or file.

If you have any info on that aspect, I'd appreciate it (I did a bit of googling last night but came up with very technical papers). I guess I could experiment

Thanks for any additional info/help.

kovidgoyal · 01-03-2011, 10:40 AM

QoS routing usually works with ports+ip addresses. So you can throttle for example, the email port (25) and leave the web browsing port (80) alone. You can do application specific QoS also, but that is usually done with a firewall on the computer running the application and is somewhat more complex to setup.

On linux you would use iptables, I don't know what you would use on other OSes.

01-03-2011, 12:18 AM	#1
FF2 Wizard Posts: 1,105 Karma: 1025784 Join Date: Oct 2010 Device: WiFi Kindle3	Possible to reduce bandwidth DSL modem. It appears that when Calibre is running a job, it really grabs a hunk of what I will call bandwidth (for want to a better understanding of what I'm talking about) and makes it hard for other inet apps to do much or slows them down a lot. For instance at this time, Calibre is emailing a file (gocomics, sort of large) to my k3. The other half was trying to check her email but having a rough time of it. She is using a different computer but the same router/modem using wifi. Is there a control to slice and dice the amount of time/bytes/whatever that Calibre it using and apportion it out to other apps. I did a quick search but did not see anything and since a job is running I cannot get to Preferences at this time. Thanks in advance Oh, PS: yes, Calibre is normally set to run overnight but something interferred and so it is running in "prime" time. And this has been necessary occasionally so an answer for allocating would still be helpful. Last edited by FF2; 01-03-2011 at 12:20 AM.

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01-03-2011, 12:21 AM	#2
kovidgoyal creator of calibre Posts: 43,842 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	What you're looking for QoS routing. Most advanced routers allow you to throttle the traffic from any given client connected to the network. calibre itself has no bandwidth throttling code.

01-03-2011, 12:47 AM	#3
FF2 Wizard Posts: 1,105 Karma: 1025784 Join Date: Oct 2010 Device: WiFi Kindle3	Thanks for the quick reply. I'm googling as I type. My router is possibly a bit older Linksys so I will check it out. Again, thanks.

01-03-2011, 10:08 AM	#5
FF2 Wizard Posts: 1,105 Karma: 1025784 Join Date: Oct 2010 Device: WiFi Kindle3	Actually, exploring around I found it does have such settings under, I believe, its GAMING settings. What I'm not clear on is whether it will throttle back the entire COMPUTER or can I select Calibre (or other apps). I can see if one has a dedicated Calibre-computer, throttling it back but since I'm also using the same computer for browsing the web and email, I would not want it very slow for those other needs. But maybe I would not notice unless I'm downloading a big attachment or file. If you have any info on that aspect, I'd appreciate it (I did a bit of googling last night but came up with very technical papers). I guess I could experiment Thanks for any additional info/help.

01-03-2011, 10:40 AM	#6
kovidgoyal creator of calibre Posts: 43,842 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	QoS routing usually works with ports+ip addresses. So you can throttle for example, the email port (25) and leave the web browsing port (80) alone. You can do application specific QoS also, but that is usually done with a firewall on the computer running the application and is somewhat more complex to setup. On linux you would use iptables, I don't know what you would use on other OSes.

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