Koozali.org: home of the SME Server

Legacy Forums => Experienced User Forum => Topic started by: jfarschman on February 02, 2006, 10:26:15 PM

Title: Slow Throughput on SME7 - updated BETA8
Post by: jfarschman on February 02, 2006, 10:26:15 PM

Hi,

  I've got a strange problem.  Throughput is slow on my SME.... but from the SME to the Internet (eth1) is fast, and from the LAN to the SME (eth0) is fast.

  The problem is from the LAN to the Internet.

  This is not a DNS problem.  I am testing with FTP connecting to an IP address not an URL.

DETAILS
You can see this really well with iptraf - General Interface Statistic.  It shows both the interfaces and the speeds.

  A. LAN to SME - 42Mbits/sec.
  B. SME to Internet - 1,558 Kbits/sec. (using wget)
  C. LAN to Internet - 17 kbits/sec
  D. SME7BETA8 - with all patches
  E.  Downloading (FTP) KNOPPIX IP (204.152.191.5)
  F.  Rebooted... more than once. It makes no difference.
  G. DELL SC430
  H. LAN - BCM5751 Gigabit Ethernet PCI - (TG3)
  I. WAN - (Linksys LNE100TX) (natsemi)

QUESTIONS

  1.  What can slow down throughput?
  2.  I'm using FTP... so the HTTP proxy does not do anything right?
  3.  Is there a good way to look for errors?  Ifconfig does not show any.

If anyone has a clue of where to start that would be great.  :roll:

Title: Slow Throughput on SME7 - updated BETA8
Post by: jfarschman on February 06, 2006, 04:24:19 PM

UPDATE - Still runs slowly (like dialup), but for a short time it ran at the normal speed  :-D   Sadly... it's back to being slow Monday morning.

Title: Slow Throughput on SME7 - updated BETA8
Post by: jfarschman on February 06, 2006, 06:10:56 PM

UPDATE -

  * swapped the cards around (internal to external)
  * Changed Ethernet Adapters.  Added in an Intel Pro 100 (e100)

No luck.  Still fast from SME to the Internet... fast from LAN to SME.... but slow from LAN to Internet.

Title: Packet Loss
Post by: jfarschman on February 06, 2006, 08:01:41 PM

Packet Loss - Anyone help me interpret this:

I flood ICMP packets into the LAN to test.  Basically pinging from the SME to a LAN PC:

ping -f -c 1000 -Q 0x10 <lan_ip>

This shows 1% packet loss.  That's pretty bad isn't it?  But what causes it?  I've swapped cables, switch ports ethernet cards... at least on the SME side.

Should I be looking at a network issue?  Could a bad card or cable be causing this problem for the entire LAN?  

Thanks.

Title: Slow Throughput on SME7 - updated BETA8
Post by: kruhm on February 07, 2006, 01:56:44 PM

i've witnessed this with v6.
a w2k server and a sme wouldn't play together nicely. I had to set the sme dns's to the isp's for it to clear up.

-if this is a brand new sme 7, you might want to try the load it again

Title: Slow throughput as well
Post by: shmeg on May 17, 2006, 01:53:12 AM

I am getting the identical problem to Jay.
I have even blown away all iptables rules and nat

from SME to net 8Mbps+
from behind the SME 1Mbps+

no other loads or congestion
thought about cbq etc? but couldnt find anything running

any ideas?

Title: Slow Throughput on SME7 - updated BETA8
Post by: kruhm on May 17, 2006, 02:20:12 PM

Wow, I wish I could get 8Mbps+. That's in the DS-3 range (T-3) (between 3-45 Mbps) and typically reserved for internet backbone connections. A connection like that would cost me more than $2500 USD ($3250 AUD) a month.

In any event, what happens if you turn the squid proxy off?
/sbin/e-smith/db configuration setprop squid Transparent no
/sbin/e-smith/signal-event remoteaccess-update