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Speed has halved over the last 2 days...

bluewhale
Grafter
Posts: 841
Thanks: 5
Registered: 30-07-2007

Speed has halved over the last 2 days...

Hi,

I have found that my speed has dropped to a half of what i have been getting since the 2mb upgrade.

Date Speed Achieved (kbps)
19-01-2006 22:59:02 840.4
19-01-2006 22:57:48 933.8
19-01-2006 18:04:06 1052.6
25-12-2005 00:32:54 1978.6
25-12-2005 00:32:21 1958.7
04-09-2005 17:11:34 1946

Plusnet support said 'speeds which you are getting at the moment are well within acceptable levels.' in their response

Do other members agree that this situation is OK?

To me i'm now effectively running on a 1mb line so i cannot agree, but am unsure what to do...

cheers

pete
10 REPLIES
N/A

Speed has halved over the last 2 days...

Hi there,

Those speeds are not good. However, perhaps what the CSC agent meant was that according to what BT determine as acceptable, then they are within their limits. And as such Plus Net cannot raise it to BT.

However, it may be worthwhile trying a BT Speedtest This will go some way towards identifying the source of the problem, be it exchange contention or a Plus Net issue.
N/A

Re: Speed has halved over the last 2 days...

Quote
Hi,

I have found that my speed has dropped to a half of what i have been getting since the 2mb upgrade.

Date Speed Achieved (kbps)
19-01-2006 22:59:02 840.4
19-01-2006 22:57:48 933.8
19-01-2006 18:04:06 1052.6
25-12-2005 00:32:54 1978.6
25-12-2005 00:32:21 1958.7
04-09-2005 17:11:34 1946

Plusnet support said 'speeds which you are getting at the moment are well within acceptable levels.' in their response

Do other members agree that this situation is OK?

To me i'm now effectively running on a 1mb line so i cannot agree, but am unsure what to do...

cheers

pete


well pete, i got <300Kbps on tests this evening on a 2Mb connexn, so something is well and truly amiss somewhere. doesnt seem to be any problems @ my exchange. also getting high pings on online games [halo/cod] up from 40-70 range into 150+ range for uk/eu servers...suppose its better than a couple of days ago when they were hovering around 250 mark Evil
Community Veteran
Posts: 4,729
Registered: 04-04-2007

Speed has halved over the last 2 days...

My speeds have been all over the place for the last 36 hours.

I did have a 1Mb connection, but my router is how syncing at 2Mb.
But speeds are down to 512Kb levels.

Date Speed Achieved (kbps)
20-01-2006 22:09:27 534.5
19-01-2006 22:04:32 376.4
19-01-2006 21:47:06 399.8
19-01-2006 21:01:25 323.9
19-01-2006 21:00:16 341.8
19-01-2006 20:58:31 269.2
17-11-2005 18:05:01 908.5
05-09-2005 17:48:03 940.8
05-09-2005 17:33:42 953.2
05-09-2005 17:31:57 947.3
05-09-2005 17:25:37 952.1

Day time speeds are OK, it’s the evening that suffer most.



Chilly
___oDiN__
Grafter
Posts: 454
Registered: 17-08-2007

Speed has halved over the last 2 days...

exchange contention maybe or u been bad and on peak time managment !
Community Veteran
Posts: 4,729
Registered: 04-04-2007

Speed has halved over the last 2 days...

1.7GB so far this month, and user tools is not reporting any issues with the exchange.
My typical usage is only 4GB per month on premier.

My speed had been consistent up until Thursday.
(The drop to 0 in week 2 was due to my router locking up.)



I will continue to monitor.

Chilly
shellsong
Grafter
Posts: 2,191
Registered: 03-08-2007

Speed has halved over the last 2 days...

How do you do your monitoring, Chilly? I wouldn't mind a tool like that-- we use mainly Ubuntu breezy badger if it makes much odds
Community Veteran
Posts: 4,729
Registered: 04-04-2007

Speed has halved over the last 2 days...

The graphs are created with MRTG www.mrtg.org
This will basically graph any positive integer value.

Then I wrote my own shell script to download a test file using `wget` which reports the download speed. The output of this script must be in the format;
green value

blue value
blank line
blank line


Here is the download only version of the script.

bandwidth.sh
#!/bin/sh

#
# MRTG ADSL Bandwidth monitoring script.
# Revision 0.5 ChillyPenguin 2005-09-07
#
# This script will monitor your ADSL bandwidth
# and output the results in a format that can be read by MRTG.
# It is intended that the script is called using crontab, at regular
# intervals.
#
# More info http://www.chillypenguin.org/
#
# ADSL Bandwidth test site
# http://www.toast.net/performance/
#
#
# Configuration variables.
#
# URL and filename of the test file to be downloaded.
url="http://toast.onspeed.com/perftest/gfx"
testfile="test.jpg"
#
# Ensure that the correct path for all commands are included below.
PATH="/usr/local/bin:/bin:/usr/bin"

# Download test file
bandwidth=`wget $url/$testfile 2>&1 | grep saved | cut -b11-16 | cut -d. -f1`
if [ -z $bandwidth ]
then
bandwidth=0
else
bandwidth=`expr $bandwidth \* 8`
fi

# Remove test file
rm -f $testfile

# The follwoing line format the output as required by MRTG
echo $bandwidth
echo $bandwidth
echo
echo


You then need a MRTG configuration file, note that you will need to set the `workdir` and `Target` as appropriate to your installation.

bandwidth.cfg
workdir: /home/webserver/mrtg/html


#---------------------------------------------------------------
#
#
Target[bandwidth]: `/home/mrtg/bandwidth.sh`
MaxBytes[bandwidth]: 2500
Options[bandwidth]: gauge,nopercent
Title[bandwidth]: ADSL Bandwidth
PageTop[bandwidth]: <H1>ADSL Bandwidth</H1>
WithPeak[bandwidth]: dwmy
YLegend[bandwidth]: Bandwidth Kb
ShortLegend[bandwidth]: Kb
LegendI[bandwidth]: &Kb:
LegendO[bandwidth]: &Kb:




This is then be called using cron, once per hour.
35 * * * *       /usr/bin/mrtg /home/mrtg/bandwidth.cfg


A couple of things to bear in mind;

This script uses approximately 1GB of bandwidth per month, simply to measure the bandwidth available.

Also, it shows the spare bandwidth, so if I am using my internet connection at the same time the script runs, it will show a reduction. In practice unless I am downloading the latest Linux iso’s it only has a margin effect, once it have averaged over the day.

There were great plans originally to retest the bandwidth, if a fall in speed was detected, after a few minutes. But like many of my scripts, once I get them working I neglect them.

To monitor my upload speed as well as download, I use a modified version of this script, on the CGI server, which runs about five minutes before this one and saves the result in a text file, which is then download, and added to the results. Sorry but the additions are very personalized and not fit for publication.

Download links;
http://www.chillypenguin.org/dropzone/bandwidth.sh
http://www.chillypenguin.org/dropzone/bandwidth.cfg

Chilly
shellsong
Grafter
Posts: 2,191
Registered: 03-08-2007

Speed has halved over the last 2 days...

Thanks Chilly! Much appreciated! Cheesy

Gerry
Community Veteran
Posts: 4,729
Registered: 04-04-2007

Speed has halved over the last 2 days...

Last nights graph is dismal.



Yes, that less then 400Kbps on a 2M connection.

I am now running regular BT speed tests, to try and find the bottleneck.
Chilly
Community Veteran
Posts: 4,729
Registered: 04-04-2007

Speed has halved over the last 2 days...

Here is the URL for the image that BT use on their speed tester.

http://217.32.105.42/downloads/image.jpg

# URL and filename of the test file to be downloaded.

url="http://217.32.105.42/downloads"
testfile="image.jpg"
#



Chilly