Slow Download speeds
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Help us help you:
Help us help you:
- Are you using the latest stable version of SABnzbd? Downloads page.
- Tell us what system you run SABnzbd on.
- Adhere to the forum rules.
- Do you experience problems during downloading?
Check your connection in Status and Interface settings window.
Use Test Server in Config > Servers.
We will probably ask you to do a test using only basic settings. - Do you experience problems during repair or unpacking?
Enable +Debug logging in the Status and Interface settings window and share the relevant parts of the log here using [ code ] sections.
Re: Slow Download speeds
had to change to a 10/10 split because i was getting too many connections with 15/15.
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- Newbie
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- Joined: January 25th, 2014, 3:42 pm
Re: Slow Download speeds
Hey Jumpup, thanks for the post! I signed up for an account just to thank you for finally giving me a solution to slowing download speeds. I was thinking it was Comcast throttling but once I added the second server the connection was saturated as it should be!
Cheers!
Cheers!
Re: Slow Download speeds
Thanks for the reply. My speed is great during the day but in the evening when everyone is home my connection speed is horrible. I take it this is due to us sharing the connection. I don't like it..not sure what can be done about that.
Re: Slow Download speeds
This is an old thread, so sorry for resurrecting it. And sorry for the long post.
I have been a LONG time user of SAB. I was running everything on a 4-core AMD Phenom w/ 16gb ram total running Ubuntu 12.04. On it I had SABNZBD, SickBeard, CouchPotato, and Headphones (among some other apps) with all the DASD being local SATA drives (2, to be exact: 2TB Hitachi and a 4TB Samsung). Unfortunately that box died a horrible and miserable death, so now I had to re-think my setup.
As a replacement, I am using an old PowerMac G4 w/ 2gb ram running Gentoo Linux, with the DASD being a QNAP TS0419P II connected over NFS. I have SAB setup to use the local HDD on the laptop as it's "incoming" folder, and the /Downloads share on the QNAP as the "completed". For USENET servers I use both TweakNews.eu (30 connections available) and Astra (20 connection available). I have business-class Verizon FIOS, reported at 120/120, but SpeedTest.net usually has me at ~80MB/s up and down.
Let me start by saying in all the years I have ran SAB, I have NEVER seen higher than 9-10MB/s reported by the app. Under my new setup, I am getting about 4-5.5MB/s for one download, less if I have more than one at a time, so about half what I was seeing before. I thought it was time to do something about this.
Per the recommendations of the prior post, I have decreased the number of connections for 30/20 to 10/10, split evenly between Tweak and Astra. Both are setup to use SSL, in case that matters. Having only 2gb of RAM, I set the article cache to 128M. CPU for SAB is usually about 90-99% while downloading. Once the par2 kicks in, that process takes about 90-99% CPU. This is when I have only one download going at a time.
When I have more than one download with repairs/unpacking all going on at once, the speed drops to about 3-3.5MB/s, with SAB taking about 58-60% CPU and the repair/unpack tacking about 30-30% CPU. It seems to me like I am getting CPU-bound here, but would like to get the opinion of some experts to see what they think. Also, is there anything else I can do to maybe speed things up a bit?
I am stuck with this setup for a while. When my original SAB server died, I tried to pick up a used 8-core (dual 4-core) Xeon 1U server that had 32GB ram, but it was WAY too noisy to use in my home office closet, so I had to scape up something to use. I then tried to use an old Raspberry PI B I had lying about, but the downloads there were horrendous. I then remembered I still had my wife's old PowerMac G4 on my book shelf, which is what I am using now. Eventually I am thinking I'd like to pick up an i5 Dual Core Mac Mini to replace it, but that might be a while down the road when I can free up about $500 for the purchase.
I have been a LONG time user of SAB. I was running everything on a 4-core AMD Phenom w/ 16gb ram total running Ubuntu 12.04. On it I had SABNZBD, SickBeard, CouchPotato, and Headphones (among some other apps) with all the DASD being local SATA drives (2, to be exact: 2TB Hitachi and a 4TB Samsung). Unfortunately that box died a horrible and miserable death, so now I had to re-think my setup.
As a replacement, I am using an old PowerMac G4 w/ 2gb ram running Gentoo Linux, with the DASD being a QNAP TS0419P II connected over NFS. I have SAB setup to use the local HDD on the laptop as it's "incoming" folder, and the /Downloads share on the QNAP as the "completed". For USENET servers I use both TweakNews.eu (30 connections available) and Astra (20 connection available). I have business-class Verizon FIOS, reported at 120/120, but SpeedTest.net usually has me at ~80MB/s up and down.
Let me start by saying in all the years I have ran SAB, I have NEVER seen higher than 9-10MB/s reported by the app. Under my new setup, I am getting about 4-5.5MB/s for one download, less if I have more than one at a time, so about half what I was seeing before. I thought it was time to do something about this.
Per the recommendations of the prior post, I have decreased the number of connections for 30/20 to 10/10, split evenly between Tweak and Astra. Both are setup to use SSL, in case that matters. Having only 2gb of RAM, I set the article cache to 128M. CPU for SAB is usually about 90-99% while downloading. Once the par2 kicks in, that process takes about 90-99% CPU. This is when I have only one download going at a time.
When I have more than one download with repairs/unpacking all going on at once, the speed drops to about 3-3.5MB/s, with SAB taking about 58-60% CPU and the repair/unpack tacking about 30-30% CPU. It seems to me like I am getting CPU-bound here, but would like to get the opinion of some experts to see what they think. Also, is there anything else I can do to maybe speed things up a bit?
I am stuck with this setup for a while. When my original SAB server died, I tried to pick up a used 8-core (dual 4-core) Xeon 1U server that had 32GB ram, but it was WAY too noisy to use in my home office closet, so I had to scape up something to use. I then tried to use an old Raspberry PI B I had lying about, but the downloads there were horrendous. I then remembered I still had my wife's old PowerMac G4 on my book shelf, which is what I am using now. Eventually I am thinking I'd like to pick up an i5 Dual Core Mac Mini to replace it, but that might be a while down the road when I can free up about $500 for the purchase.
Re: Slow Download speeds
If you set SAB's logging to +Debug and restart SAB, in sabnzbd.log you will see a line like:
(This is the result on an April 2011 Core i3)
So: What does is your old PowerMac G4's Pystone number?
On Linux, you can do this:
Code: Select all
DEBUG::[SABnzbd:1332] CPU Pystone available performance is 79076
So: What does is your old PowerMac G4's Pystone number?
On Linux, you can do this:
Code: Select all
$ cat ~/.sabnzbd/logs/sabnzbd.log | grep CPU
2015-03-22 20:18:45,590::DEBUG::[sabnzbdplus:1294] CPU Pystone available performance is 63861
2015-03-22 20:18:45,591::DEBUG::[sabnzbdplus:1298] CPU model name is Intel(R) Core(TM) i3 CPU M 370 @ 2.40GHz
2015-03-22 21:31:21,948::DEBUG::[SABnzbd:1332] CPU Pystone available performance is 79076
2015-03-22 21:31:21,949::DEBUG::[SABnzbd:1344] CPU model name is Intel(R) Core(TM) i3 CPU M 370 @ 2.40GHz
Re: Slow Download speeds
I think this is the problem:
I think someone mentioned you need a score of 50k or higher?
Code: Select all
2015-03-24 20:31:16,764::DEBUG::[SABnzbd:1306] CPU Pystone available performance is 28618
Re: Slow Download speeds
Well, you don't need 50.000, but a Pystone of 28.618 is quite low for current standards. So that is the explanation for your high CPU load and your download speeds.mbabauer wrote:I think this is the problem:
I think someone mentioned you need a score of 50k or higher?Code: Select all
2015-03-24 20:31:16,764::DEBUG::[SABnzbd:1306] CPU Pystone available performance is 28618
Re: Slow Download speeds
Well I guess at this point there isn't much I can do. Luckily I usually do most my downloading at night anyway, so it shouldn't matter much.
As a side-question, would it be advisable to pursue the Mac Mini i5 dual core (pre 2014 edition) if I can find one? I am trying to go from the enormous tower I was using prior to something a bit smaller. And since NAS drives have increasingly gotten more affordable, it doesn't make sense to have a huge tower any more with a ton of drives anyway.
As a side-question, would it be advisable to pursue the Mac Mini i5 dual core (pre 2014 edition) if I can find one? I am trying to go from the enormous tower I was using prior to something a bit smaller. And since NAS drives have increasingly gotten more affordable, it doesn't make sense to have a huge tower any more with a ton of drives anyway.
Re: Slow Download speeds
Any i5 Core should be a perfect machine for SAB downloading, assuming it has at least 4GB of RAM.mbabauer wrote: As a side-question, would it be advisable to pursue the Mac Mini i5 dual core (pre 2014 edition) if I can find one?
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- Newbie
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Re: Slow Download speeds
Thanks jumpup you are genius!!!!!!
It now works at full line speed!
Amazing man, really amazing from 32K to 941K just like that.
It now works at full line speed!
Amazing man, really amazing from 32K to 941K just like that.