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Have run the speed test twice and even restarted the BT HUB 5, and still it says TBB is 4Mbps and HTTP is 76 Mbps on download. A separate test using System Mechanic says 4Mbps download. I'm on Infinity 2.
The upload speed is 18Mbps.
So what does this mean ?
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What does this mean? TBB is 4Mbps
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Can you link to the test?
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Without seeing the graphs hard to say with any certainty but
low tbbx1 and good httpx6 usually means
1. Too low RWIN
or
2. Congestion somewhere
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The author of the above post is a thinkbroadband staff member. It may not constitute an official statement on behalf of thinkbroadband.
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Ah, now I understand the question. Doesn't it indicate single-thread throttling by the ISP?
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That is another option, but BT Retail has not done that for ages and would break a good number of rules if they throttled tcp 8095 traffic
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The author of the above post is a thinkbroadband staff member. It may not constitute an official statement on behalf of thinkbroadband.
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I was getting similar speeds but with ADSL. I find odd that no matter what speed your on FTTC or ADSL still slows down to the 4MB mark
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I don't think its RWIN, as I have that set by System Mechanic as 256960, and that's worked for years.
As of now ( 01.39 ) the speed test gives different results and TBB is now 71.6Mbps and HTTP is 70.2Mbps.....so whatever the problem was seems to have gone away. Will test again tomorrow around 3pm and see if it returns.
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Don't know why, but on Infinity 2 I find that if I get speed issues, Upload and/or Download, it is, more often than not, after midnight/1 AM than at other times of the day or night. Though I find that I do get occasional bad contention, especially on Upload, from 2200-2230 onwards on certain days of the week, especially Saturdays.
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Schrodingers_Cat
