Very Poor 2mb Broadband via Set-top Box

Originally Posted by Soundlab

Both PC's have had Dial-up on them and then broadband installed ... so I'd be surprised if there was a problem there ?

Darren

worth checking, though - you might like to try the tweak test in the article I linked to on Robin Walkers superb site, to see?

[Soundlab]

I downloaded something called "TCPOptimizer.exe" ... and ran the Optimise option. This amended my MTU and RWIN - which were VERY low (500 and something) up to 1500 (MTU) and then re-ran some speed tests (the Robin Walker tests and the ADSLGuide speed test) ... both of these now show a 2mb connection ... whereas it was showing 400k.

Just ran the same tests on the PC downstairs - so I'm going to compare the results.

Darren

Originally Posted by Soundlab

I downloaded something called "TCPOptimizer.exe" ... and ran the Optimise option. This amended my MTU and RWIN - which were VERY low (500 and something) up to 1500 (MTU) and then re-ran some speed tests (the Robin Walker tests and the ADSLGuide speed test) ... both of these now show a 2mb connection ... whereas it was showing 400k.

Just ran the same tests on the PC downstairs - so I'm going to compare the results.

Darren

nice one - thanks for the feedback, it is really helpful for other people who may experience similar problems

[Soundlab]

The website I got it from was :

http://www.speedguide.net/tcpoptimizer.php
__________________

Some more information from a test I just did (after amending my settings to match those of the other PC) :

1. Your Tweakable Settings:
Receive Window (RWIN): 256960
Window Scaling: 2
Path MTU Discovery: ON
RFC1323 Window Scaling: ON
RFC1323 Time Stamping: ON
Selective Acks: ON
MSS requested: 1460
TTL: (less any hops behind firewall) 127
TTL remaining: 118
TOS/TOS subfield: 0
TOS/Flags:

2. Test 1024001 byte download
Actual data bytes sent: 1040061
Actual data packets: 714
Max packet sent (MTU): 1500
Max packet recd (MTU): 1500
Retransmitted data packets: 11
sacks you sent: 170
pushed data pkts: 99
data transmit time: 5.456 secs
our max idletime: 464.9 ms
transfer rate: 167353 bytes/sec
transfer rate: 1338 kbits/sec
This is not a speed test!
transfer efficiency: 98%

3. ICMP (ping) check
Minimum ping: 78.64 ms
Maximum ping: 89.46 ms
Ping stability:
82.37 83.27 88.42 80.43 89.46 83.60 80.28 86.44 79.43 78.64

These results all came from the following test :

http://www.dslreports.com/tweaks

Having run the test and looking at the results, you have to select you "Service" (which I selected "cable"), Your advertised speed (kbit/s) (which I selected "2000"), your operating system (Mines XP Pro) and Connection (I chose "Normal")

The results above are almost exactly the same on both ours PC's now.

Darren

Originally Posted by Soundlab

<snip>

The results above are almost exactly the same on both ours PC's now.

Darren

looks like a result

[Soundlab]

Just a few more results :

From Robin Walkers on-line speed test :

1st 128K took 531 ms = 246840 Bytes/sec = approx 2054 kbits/sec
2nd 128K took 532 ms = 246376 Bytes/sec = approx 2050 kbits/sec
3rd 128K took 531 ms = 246840 Bytes/sec = approx 2054 kbits/sec
4th 128K took 547 ms = 239620 Bytes/sec = approx 1994 kbits/sec

And from ADSLGuide :

Downstream1833 Kbps (229.1 KB/sec)1979 Kbps (inc. overheads)Upstream187 Kbps (23.4 KB/sec)201 Kbps (inc. overheads)

So I THINK I've sorted it myself.

Homealone - thankyou for the link to Robins "Tweeks" section ... that's how I found all this stuff.

Originally Posted by Soundlab

Just a few more results :

From Robin Walkers on-line speed test :

1st 128K took 531 ms = 246840 Bytes/sec = approx 2054 kbits/sec
2nd 128K took 532 ms = 246376 Bytes/sec = approx 2050 kbits/sec
3rd 128K took 531 ms = 246840 Bytes/sec = approx 2054 kbits/sec
4th 128K took 547 ms = 239620 Bytes/sec = approx 1994 kbits/sec

And from ADSLGuide :

Downstream1833 Kbps (229.1 KB/sec)1979 Kbps (inc. overheads)Upstream187 Kbps (23.4 KB/sec)201 Kbps (inc. overheads)

So I THINK I've sorted it myself.

Homealone - thankyou for the link to Robins "Tweeks" section ... that's how I found all this stuff.

no problem - Robins site is a tremendous resource for advice & information, I'm sure he will be pleased you found it useful