Thanks mate, but no "fancy stuff" running on my PC.....
Good suggestion - however, I have been informed that my account is definately set-up for HSDPA....
Thanks for the interest. Definately HSDPA contract. Just ran three tests - download; 852; 1128 and 763 respectively. Upload; 340; 233 and 325 respectively. Although more temperamental than my mother-in-law, I will be happy if it remains like this.......
Not entirely correct, all browsers,software,etc use the IP Stack provided, by this case, Windows. There are a few options that the application can set that will make a huge diffs in the way the application responds. Have a look at
Correct. I am specifically talking about the timeout in this case. Once the timeout is reached the application should request the data again. Some (like Opera) however do not seem to use the timeout and will simply wait forever and others will tell you the file cannot be downloaded. I sometimes notice data coming through minutes later without being requested again. This happens regularly with the same application so I don't think this is a windows problem. I do sometimes notice the IP stack or maybe even the bluetooth stack getting confused and then reloading only sends a "page not available" message and I have to disconnect and restart my connection and sometimes even my software.Not entirely correct, all browsers,software,etc use the IP Stack provided, by this case, Windows. There are a few options that the application can set that will make a huge diffs in the way the application responds. Have a look at
http://www.opengroup.org/onlinepubs/000095399/functions/setsockopt.html
My point is, sometimes the IP stack get's confused/misplaced/misused and then there is nothing that you can do but to reload. Programs like firewalls etc intercept your socket comms, so make sure you have a *good* one
The download speed I was referring to is the speed at which data comes through once the connection is established. The download rate is how long it takes to download all the data. Most programs give the download rate, ie. from the moment the connection is initiated. Opera gives the rate at which the entire page loads and is a good indication of the connection latency. The difference is most noticable with small files (download speed = download rate - handshake). Anyway, don't think there's an official definition for this so maybe we should start one. Only the way I understand it from the meaning of the words like the difference between an object's speed and velocity.
@Prometheus, did you mean that speed and rate in that context had different meanings, where maybe rate means acceleration?
If you don't mean acceleration or decelleration, then I think you must mean duration instead of rate...?The download speed I was referring to is the speed at which data comes through once the connection is established. The download rate is how long it takes to download all the data. Most programs give the download rate, ie. from the moment the connection is initiated. Opera gives the rate at which the entire page loads and is a good indication of the connection latency. The difference is most noticable with small files (download speed = download rate - handshake). Anyway, don't think there's an official definition for this so maybe we should start one. Only the way I understand it from the meaning of the words like the difference between an object's speed and velocity.
@Prometheus, did you mean that speed and rate in that context had different meanings, where maybe rate means acceleration?
And to think we had a job for you reserved in Engineering!
.And what does this have to do with download speed?And to think we had a job for you reserved in Engineering!
Maybe get a good book on TCP/IP and get a clear understanding of how peer to peer communication work between the same layers on the different nodes.
It will also help you understand how one layer hands over to the next (IP to TCP/UDP to Session right up to Application and then to a program like Opera) as well as one protocol to another (ARP, RIP, DNS, HTTP, etc.).
This stuff was defined in the 70's.....
Nothing like factual knowledge, takes the guesswork out of anything
And what does this have to do with download speed?
Ah, you're talking about the packet headers and the impact this has on download speed. Also that small packets have a bigger total overhead than large packets although the effect only really becomes apparant with very small packets. This is however not what we were talking about unless Dave was comparing the download speed of files smaller than the normal packet size. For files larger than the packet size the ratio of the overhead over the data tend to become the same for all files and won't cause a different download speed for different file sizes. With the handshaking I was merely referring to the fact that it normally takes up to 10 seconds before my download starts. Do you want to convince me using network protocols that this is not the case when I know it for a fact?
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