DMF
join:2006-11-16
Lilburn, GA
| Speed test vs. Comcast PowerBoost® ?
Comcast claims to boost (double?) the U/L and D/L speeds of the first 2.5/5 MB of each transfer.
My question is, how does this affect the speed results here? Since (as I understand it) the test consists of multiple small (all less than the PowerBoost threshholds) transfers, am I seeing only the boosted speed? Or is this somehow accounted in the test?
(test results ~4.8M down, 2.5 up - Java test)
And where to look for how - or whether - PowerBoost actually makes a difference in various usages?
Thanks. |
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Irish Shark
Play Like A Champion Today
Premium,MVM
join:2000-07-29
Las Vegas, NV
1 edit | • What are your advertised speeds?
• Most ISPs who have PowerBoost or some other name, open up the flood gates when the demand is low (set by each ISP).
• I do not understand: " Since (as I understand it) the test consists of multiple small (all less than the PowerBoost threshholds) transfers..."
• I am on Cox. With PowerBoost I get 21mb/2.5mb on a 12mb/1.5mb line.
• Each test is run on one server that is used to do the speed tests. Try running this:
Run Two Speed Tests from the two DIFFERENT cities nearest to you that are listed here: Speakeasy POPs
Also, test here »ftp://ftp1.optonline.net/test512
Note your transfer rate after about 30 seconds. Then cancel the download.
For the TWO Speakeasy Tests, Copy and Paste the speed results from those tests and note the speed from the FTP download test.
--
"You can observe a lot by watching". Yogi Berra |
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DMF
join:2006-11-16
Lilburn, GA
| Re: Speed test vs. Comcast PowerBoostÃ130;® ?
Let me explain my question a little better:
The Java Speed Test receives, then sends several chunks (one presumes files) of increasing size, from 300KB to 5MB. If PowerBoost is applied based on file size, then it should be applied to all save maybe (part of?) the largest upload chunk.
Thus the speed that the Speed Test is measuring is that of the boosted transfer, NOT that of much larger files, e.g. video streams.
Capice?
I think my advertised rate is 12/1.5M, but I'm not entirely sure since it's changed recently.
I'll see what I get on the other tests... |
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Irish Shark
Play Like A Champion Today
Premium,MVM
join:2000-07-29
Las Vegas, NV
| Capice? No not really.
• Not all Java test are the same. Some use a small file and step up to a larger file. Some use one large file and others use a small file (not suitable for high bandwidth testing).
• The server does not know if you have Boost - it does not care. It just pumping the file until your box cannot take it anymore. No difference if I have a 20mb download cap, the sever just does not care.
• As I sated above: "Most ISPs who have PowerBoost or some other name, open up the flood gates when the demand is low (set by each ISP)." Some test may have Boost kicked-in and some do not.
• All speed tests have a ramp period at the beginning of th test. The speeds starts fast and then levels off and in some case it will slowdown towards the end of the test.
• The speed test is an approximation of your true speed. The whole process is averaged, it does not know or care if you have Boost kicked in or not.
• If Boost kicks in, you will usually have more time at the Boost Level; so the test will report a higher speed.
No different if I have a high download cap.
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"You can observe a lot by watching". Yogi Berra |
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DMF
join:2006-11-16
Lilburn, GA | Re: Speed test vs. Comcast PowerBoost® ?
We're not talking about all Java tests, we're talking about the one on DslReports. This is the Site Tools forum, isn't it?
You've answered my question. Thanks.
Btw, the answer was, "Yes." |
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Irish Shark
Play Like A Champion Today
Premium,MVM
join:2000-07-29
Las Vegas, NV
| said by DMF  :We're not talking about all Java tests said by DMF :Let me explain my question a little better: The Java Speed Test receives, then sends several chunks (one presumes files) of increasing size, from 300KB to 5MB. What? 
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"You can observe a lot by watching". Yogi Berra |
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