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Low Speedtest Results

Community Veteran
Posts: 38,460
Thanks: 1,028
Fixes: 62
Registered: 15-06-2007

Low Speedtest Results

My IP Rate and the PlusNet equivalent is 3000kbps but speed tests and http download tests (including the BT Speedtester) only give speeds of about 1800kbps.
Any suggestions as to the problem. Note that the IP Rate until about 2 days ago was 2000kbps
Edit - this is a PlusNet problem. I just changed to the RIN connection  and speeds are now 2900kbps
Is this a function of now being on BBYW2 or is there a problem with the network
8 REPLIES
Community Veteran
Posts: 38,460
Thanks: 1,028
Fixes: 62
Registered: 15-06-2007

Re: Low Speedtest Results

Apologies for the bump but this one seems to have been missed.
I would really like a rep to have a look at it.
James
Grafter
Posts: 21,036
Registered: 04-04-2007

Re: Low Speedtest Results

Hi Jim,
I can't see anything that's obviously causing your problem - your line is profiled at 3000Kbps at both our end and BTs.
I'd appreciate it if you could try tweaking your MTU and rWin settings for a 3000Kbps connection and then try running a BT Speedtest after rebooting your computer and router.
Community Veteran
Posts: 38,460
Thanks: 1,028
Fixes: 62
Registered: 15-06-2007

Re: Low Speedtest Results

I am on Vista 64 bit - and it has always worked OK when I was on PAYG  - no difference between RIN and PlusNet.
Now on BBYW2 there is a significant difference on BT speedtest, PlusNet speedtest and http file download from the Kaspersky software download.
I can't fiddle with Rwin in Vista and MTU isn't a good idea either unlike XP
Highlighted
Community Veteran
Posts: 38,460
Thanks: 1,028
Fixes: 62
Registered: 15-06-2007

Re: Low Speedtest Results

Update - switched back to PlusNet servers and speeds are just under 3000kbps.
The only thing I can suggest is that the jump from 2000 to 3000 didn't happen until I disconnected and reconnected to the PlusNet servers - anyway it seems to be fixed  Grin
Superuser
Superuser
Posts: 9,677
Thanks: 1,074
Fixes: 60
Registered: 06-04-2007

Re: Low Speedtest Results

When the Plusnet profile increases I've noticed it is sometimes necessary to disconnect from Plusnet and reconnect to benefit from the increased value.
Perhaps the same is true when it goes down but in that case the BTw RAS applies the rate limit so the effect wouldn't be noticeable.
David
VileReynard
Seasoned Pro
Posts: 10,913
Thanks: 256
Fixes: 10
Registered: 01-09-2007

Re: Low Speedtest Results

According to Plusnet my profile is 7000KBps
My Sync rate is 7968 Kbps
The speedtester gives :-




etc...
BTW My exchange contends that there is no contention.

Community Veteran
Posts: 3,789
Registered: 08-06-2007

Re: Low Speedtest Results

Axis - out of interest what does the BT speedtester give you?
If it's markedly higher, tweak your MTU and RWIN.
B.
VileReynard
Seasoned Pro
Posts: 10,913
Thanks: 256
Fixes: 10
Registered: 01-09-2007

Re: Low Speedtest Results

The BT speedtester gives me a java error Grin
But - before it crashed it confirmed that Plusnet's value of 7000Kbps is correct.
Since I am using Linux, it will choose optimal values for RWIN/MTU
Investigation shows that MTU is 1500 (which is the same as my router)
/proc/sys/net/core/rmem_default = 122880
/proc/sys/net/core/wmem_max = 16777216
My send window values are the same as the receive window sizes.