- 80kbps connection speed
- Posted by Steven Burn on November 12th, 2003
http://monitor.dslreports.com/tweak/...peed=256&os=wi
n98SE&via=normal
Okie, I went to that site and did the tweak test. According to the site;
---------------------------
Your Tweakable Settings:
Receive Window (RWIN): 13900
Window Scaling: off
Path MTU Discovery: ON
RFC1323 Window Scaling: OFF
RFC1323 Time Stamping: OFF
Selective Acks: ON
MSS requested: 1390
TTL: (less any hops behind firewall) 62
TTL remaining: 50
Notes and recommendations:
Change MTU to 1500 (FAQ #652, #695)
Choose RWIN between 5560 and 6950 (FAQ #586)
download/use DRTCP .. (FAQ #578)
Read the tweak FAQ
Example 146000 byte download
Actual data bytes sent: 152950
Actual data packets: 111
Max packet sent (MTU): 1430
Max packet recd (MTU): 1430
Retransmitted data packets: 5
sacks you sent: 12
pushed data pkts: 20
data transmit time: 3.935 secs
our max idletime: 190.9 ms
transfer rate: 31564 bytes/sec
transfer rate: 252 kbits/sec
This is not a speed test!
transfer efficiency: 95%
Notes and recommendations:
Good data stream (no/few rexmits)
ICMP (ping) check
Minimum ping: 128 ms
Maximum ping: 130 ms
Ping stability:
129 130 128 129 130 130 129 130 129 128
Notes and recommendations:
Looking good
---------------------------------
However, even with the above, I am getting;
Max download speed: 17kbps (was max 7kbps prior to making the changes
suggested by Bat Guano)
Page loading time: 1-2 mins*
Still have to clear cache after every 2 - 3 website's
*Pages still freeze, resulting in my having refresh a few times before the
page will load
I do now agree I was wrong in blaming Tiscali as I have a feeling it is one
of 2 things;
1. IE needs repairing/re-installing
2. USB drivers need re-installing (for the ports, not the modem, though if I
do the first, I will have to re-install the modem drivers anyway)
The first I've already done, several times, so I can't see it being that.
However, I was checking the device manager and found the USB Root Hub and
PCI to USB Open Host Controller, both listed twice, even though I only have
2 USB ports (I double checked what it is meant to be on one of my other
machines, and it only has these listed once), so one my download is
finished, I am going to re-install it and see if that solves the problem.
I'll post back here with the results...... thanks again everyone, and my
sincere apologies for being a stubborn git and thinking I knew best.
--
Regards
Steven Burn
Ur I.T. Mate Group
www.it-mate.co.uk
Keeping it FREE!
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Bat Guano <bat.guano@talk21dotcom> wrote in message
news:vr2a5stc0jjua3@corp.supernews.com...
- Posted by John Rumm on November 12th, 2003
Steven Burn wrote:
There are some known problems with some motherboard chipsets (often VIA
ones) and some USB ADSL modems. It may be you have a problem here.
Do you have (or could borrow) a different modem you could try? Better
still try a router connected via ethernet rather than USB and see if
that makes a difference.
--
Cheers,
John.
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- Posted by Steven Burn on November 12th, 2003
Cheers John,
Unfortunately, I have neither a spare DSL modem, or router.
My mobo is a K7AMA
--
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Steven Burn
Ur I.T. Mate Group
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Keeping it FREE!
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John Rumm <see.my.signature@nowhere.null> wrote in message
news:E8gsb.7268$lm1.50705@wards.force9.net...
- Posted by Steven Burn on November 12th, 2003
I re-installed the USB port drivers, and it doesn't seem to have made any
difference whatsoever, so I am officially at a loss as to what could be
causing the slowdown (especially the browsers delays) as I have also
re-installed IE, DUN etc etc aswell.
--
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Steven Burn
Ur I.T. Mate Group
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Keeping it FREE!
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Steven Burn <services@it-mate.co.uk> wrote in message
news:bos1jr$1i0tf6$1@ID-213556.news.uni-berlin.de...
- Posted by John Rumm on November 12th, 2003
Steven Burn wrote:
That sounds like an Elite group motherboard. If so, it is probably an
ALi chipset. I don't recall anyone complaining of a problem with this
combination - but that is no guarentee.
You could get yourself a cheap PCI modem to prove the point - or go for
a router since it will offer a better and more secure solution anyway.
It also simplifies things a bit since the computer (and its drivers/OS)
are no longer the end point of the connection. The other option you
could try is to install a cheap USB expansion card to add some new USB
ports and try the modem on them.
Another thought - would you be able to try another computer? (i.e.
borrow a laptop or something like that). That would also help you to
decide where to start looking.
--
Cheers,
John.
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- Posted by Mogweed on November 12th, 2003
With an Athlon 700 and 128Mb RAM the system should probably be able to
handle it but I just wondered if it's maybe the USB modem? USB modems are
the equivalent of software or "winmodems" in the dialup world and Alcatel
(www.speedtouch.com) even state in their FAQ's that USB modems do slow the
computer down as they use the main CPU to do their number-crunching. Try to
borrow a PCI ADSL modem from a friend and see if it makes a difference.
Probably won't but just a suggestion as it seems you've tried almost
everything else!
Mogweed
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"King Queen" <kq.lartsspammers@kingqueen.org.uk> wrote in message
news:fe91rv0e7vpagemd1454cjs4rlh529hjn2@4ax.com...
- Posted by Steven Burn on November 12th, 2003
Responses inline:
John Rumm <see.my.signature@nowhere.null> wrote in message
news:FEksb.7283$lm1.50596@wards.force9.net...
It is, on both counts. The problem is, I'm not aware of anyone having
problems with this board and ADSL either
If I could afford it, I would give it a try 
(
Already tried one of my other PC's and it has exactly the same problems.
--
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Steven Burn
Ur I.T. Mate Group
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Keeping it FREE!
Disclaimer:
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- Posted by Bat Guano on November 12th, 2003
Steven Burn wrote:
That "Retransmitted data packets: 5" sounds like a problem. I can't
remember why you get them - perhaps its the way Tiscali cripple the
service, by dropping packets or perhaps your MTU is too high and would
benefit some investigation by pinging with the do-not-fragment flag set
to determine highest MTU...
- Posted by Andy Furniss on November 12th, 2003
Steven Burn wrote:
I couldn't get this to post in the right part of the thread.
That packet loss is normal it's partly how TCP controlls bandwidth and the
MTU is OK at 1430, there is no point tweaking your MTU for one site -
others will be different anyway.
As for the web page problem I would double check DNS and proxy settings and
see exactly what error browsers are reporting.
Are you are using IE/Windows that are patched upto date via windows update.
Andy.
- Posted by Steven Burn on November 12th, 2003
Andy,
Regarding the browser issue, I've checked, double checked, and even reset,
the DNS settings several times now, it doesn't make the blindest bit of
difference. (the browser doesn't give errors, at all...... just goes blank,
then nada..... until I press refresh approx 4-5 times).
--
Regards
Steven Burn
Ur I.T. Mate Group
www.it-mate.co.uk
Keeping it FREE!
Disclaimer:
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Andy Furniss <spam.bucket@surfanytime.co.uk> wrote in message
news:s8ra81-g01.ln1@MBC.localdomain...
- Posted by John Rumm on November 13th, 2003
Steven Burn wrote:
That would tend to point the finger back at either the modem itself, the
isp, or a problem with the line or wiring.
Is there any way you can find out what the CRC error rate (or bad rx
packet count if that is what your system calls it) you are receiving is
from your modem setup?
It could be for example that the modem is syncing OK at the anticipated
576 / 288 kbps, and the ISP is giving you the service you paid for.
However if you are receiving a very high error rate the number of TCP
level retransmissions required to actually get data over the link is
reducing your actual throughput dramatically.
If this was the case it might be worth trying a small MTU (say 600
bytes). If you find that your transfer speed increases (when theory
would suggest a small MTU would be less efficient) that would suggest
you are getting a high error rate.
--
Cheers,
John.
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- Posted by Steven Burn on November 13th, 2003
John,
How does one find out the CRC error rate?
--
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Steven Burn
Ur I.T. Mate Group
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Keeping it FREE!
Disclaimer:
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John Rumm <see.my.signature@nowhere.null> wrote in message
news:_rDsb.7715$lm1.53510@wards.force9.net...
- Posted by John Rumm on November 13th, 2003
Steven Burn wrote:
That will vary from one router/modem to the next. On my router I simply
visit the status page hosted on the routers in built web server, and the
rx and tx packet error rate is displayed along with various other comms
parameters. Yours will no doubt be different.
Hence why I suggested trying a small MTU. If you have a high error rate
then you should see an increase of error free packets if each of them
are smaller. It would also be an empirical way to detect if you have a
high packet error (aka CRC error) rate.
Also, if you have not already tried it, try the modem plugged directly
into your master socket without any other extensions / filters etc. That
would also tend to help if error rate was a problem.
Not sure if it is any help but I stumbled over what seems to be the
latest drivers for the modem.:
http://www.sagem.com/web-modems/down...000-fr.htm#800
May be worth a try....
--
Cheers,
John.
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- Posted by Steven Burn on November 13th, 2003
John Rumm <see.my.signature@nowhere.null> wrote in message
news:EqRsb.8000$lm1.55215@wards.force9.net...
Cheers John, I'll give it a try. ;o)
--
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Steven Burn
Ur I.T. Mate Group
www.it-mate.co.uk
Keeping it FREE!
Disclaimer:
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- Posted by Steven Burn on November 13th, 2003
Found out how to get the CRC error rate thanks to the page you supplied.
My CRC is 13
Total packet loss: 16
--
Regards
Steven Burn
Ur I.T. Mate Group
www.it-mate.co.uk
Keeping it FREE!
Disclaimer:
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- Posted by John Rumm on November 13th, 2003
Mogweed wrote:
Probably not that bad - in that the USB modem will be running its own
data pump and codecs etc and not using the host CPU for that task.
The USB modem may result in slightly higher CPU usage - but it should
not make any difference to the speed of the connection unless the CPU is
maxed out doing something else (i.e. playing a online 3d game for example).
--
Cheers,
John.
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- Posted by John Rumm on November 13th, 2003
Steven Burn wrote:
Out of how many packets?
(losing 16 out of 500,000 would be fine, losing 16 out of 40 would
indicate a serious line problem!)
--
Cheers,
John.
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- Posted by Colin Wilson on November 14th, 2003
My USB modem used to drop connection regularly (1Ghz duron machine) when
I was playing Half-Life, and dropped *slightly* less often when I
throttled down the screen updates to 30fps.
Thinking back, my god, that cheap ebuyer router was a godsend ;-)
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- Posted by Steven Burn on November 14th, 2003
17,600 at the last check
--
Regards
Steven Burn
Ur I.T. Mate Group
www.it-mate.co.uk
Keeping it FREE!
Disclaimer:
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John Rumm <see.my.signature@nowhere.null> wrote in message
news:HZVsb.8098$lm1.55472@wards.force9.net...
- Posted by John Rumm on November 14th, 2003
Steven Burn wrote:
That sounds fine then... I would still be temepted to try the small MTU
just to see what difference that makes.
If you get a fall in performance (or not much change) with the smaller
MTU then it would suggest the problem is with your ISP - since you have
tried more than one computer you have eliminated that. The error rate
mesurement + MTU test could iliminate line noise or other related
problems. That only leaves the ISP or some major contention problem,
with a small possibility of a faulty modem.
--
Cheers,
John.
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