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Download speed cut in half with Sabnzbd [NAS]

Posted: May 16th, 2013, 10:43 pm
by boum
I have sabnzbd installed on my nas and I only get around half my normal download speed.
6MB/s instead of 12 MB/s.

If I use another program to download on my NAS I get max speed to my newsserver. Or from any other computer.
So it is not my hardware. It is sabnzb that is somehow throttling my speed.
Am I missing a setting somewhere?

Hope anyone can help. I looked and tried a lot of things but cant get sabnzbd up to the normal speed.

Re: Download speed cut in half with Sabnzbd

Posted: May 17th, 2013, 12:20 am
by sander
It's ... your hardware.

My guesstimate: your NAS has an Atom processor, or something else lower than an i3 Core. Correct?
If so: you won't get much higer SABnzbd speeds than 6 MBS/s on that hardware.

If "another program" gets a higher download speed, it's because that program is less CPU-hungry than SABnzbd. That is a known fact: if the CPU is the bottle neck, programs like nzbget (compiled C program) get higher speeds than SABnzbd (interpreted Python-program)

You might wonder if you can you get high speeds with SABnzbd? Certainly: on my i3 Core, I can get 23 MB/s.

It has been discussed before. See http://forums.sabnzbd.org/viewtopic.php?f=2&t=13899

HTH

Re: Download speed cut in half with Sabnzbd

Posted: May 17th, 2013, 12:37 am
by boum
OK, though my cpu is almost idle when using Sabnzbd to download.
Poorly written code then I guess..
Well it is convenient. I'll prob mix it up with other stuff and write my own if I need to download something fast.
But can't believe that this is the official answer when other progs are downloading superfast on the same hardware.