speed too slow

[lennartack]

Hi,

The speed in SAB is much slower than with other news clients (klibido, pan). With klibido the speed around 5000KB/s but with SABnzbd it's no more than 1100KB/s. I allready set the cache limit to -1 but that didn't change anything. It is a brand new sata II disk so it shouldn't matter anyways.

Version: 0.4.4
OS: Debian Testing
Install-type: Python source (is there a way to compile?)
Firewall Software: iptables

Thanks alot,
Lennart

[lennartack]

It seems the speed is limited per connection; when I lower the connections to 1 the speed is only 350KB/s, though with klibido the speed is still very high with only one connection.

[rascalli]

sab does not limit speed it self.
please check your speed settings

Also are you testing both software on same post & port ??

[shypike]

SABnzbd is slower, especially on SSL connections.
On a modest Pentium III system running Linux, I get about 2200 KBytes/sec using
8 connections to Giganews.
On my E8200 Vista system I max out at 7000 KBytes/sec.

[lennartack]

sab does not limit speed it self.
please check your speed settings

Al speed settings are set to unlimited

Also are you testing both software on same post & port ??

Yes. Both using the same ssl connection.

SABnzbd is slower, especially on SSL connections.
On a modest Pentium III system running Linux, I get about 2200 KBytes/sec using
8 connections to Giganews.
On my E8200 Vista system I max out at 7000 KBytes/sec.

I'm using a brand new amd opteron server from dell. Shouldn't that be fine?

[shypike]

I'm using a brand new amd opteron server from dell. Shouldn't that be fine?

I guess it should, but it's hard for me to judge your exact situation.
How many connections do you use? Do you use SSL?
What's the influence of the firewall?

I'm not surprised that Klibido is faster, since it's written in C++.
We are suffering somewhat from Python's slower I/O (specifically SSL).
But with a recent powerful system you should able to get to about 7000KBytes/sec,
that is if there are no other limits (like firewall, wan-router, ISP, Usenet server).

[lennartack]

I'm using a brand new amd opteron server from dell. Shouldn't that be fine?

I guess it should, but it's hard for me to judge your exact situation.
How many connections do you use? Do you use SSL?
What's the influence of the firewall?

I'm using 8 connections. The speeds doesn't change when disabling SSL. I forwarded port 119 and 536 on the NAT router and opened them on the firewall.

I'm not surprised that Klibido is faster, since it's written in C++.
We are suffering somewhat from Python's slower I/O (specifically SSL).
But with a recent powerful system you should able to get to about 7000KBytes/sec,
that is if there are no other limits (like firewall, wan-router, ISP, Usenet server).

Is it possible to make it faster when compiling everything using Freeze? I tried this but running the compiled binary gave some error messages and didn't work at all .

I forgot to mention that SAB is installed on a VMWare virtual machine (bridge connection). It has enough ram and one core to work with. It still should be good enough, right?

[shypike]

I forwarded port 119 and 536 on the NAT router and opened them on the firewall.

These ports don't need forwarding. Connections that are opened by SABnzbd to the
outside world need no port forwarding.
Only if you want to expose SABnzbd's web-server to the outside world you would need forwarding.

"Compiling" makes no difference (only start up will be slightly faster).

I have had SABnzbd running in a VMWared Ubuntu without problems, haven't looked at the
speed recently.

I'm always having problems with setting up VMWare networking though...
I think I used NAT instead of brigded.

[rascalli]

I am running sabnzbd+ on 3 computers , all running Ubuntu server

1. PC :
P4 2GHZ
1.5 GB RAM
speed on SAB : 1500 - 1700 (20mbit download speed)

2.  server 1
Intel(R) Core(TM)2 Duo CPU E7200 @ 2.53GHz
2GB RAM
speed on SAB 10.000 - 11.000 (100mbit download speed)

3. server
Intel Core2Duo 2x 2.33+ GHz
2GB RAM
speed on SAB 10.000 - 11.000 (100mbit download speed)

So I would say that SAB is able to download at very good speed

[shypike]

I forgot to mention that SAB is installed on a VMWare virtual machine (bridge connection). It has enough ram and one core to work with. It still should be good enough, right?

Could that be the problem? Doesn't VMWare limit its virtual network connections to 10 MBit/sec?

[lennartack]

I solved it by adding another processor core and some more ram to the virtual machine. It is a lot faster now! Still not as fast as klibido though