Atom Posted December 9, 2002 Share Posted December 9, 2002 Hi every1 I have verizon dsl and i must say its pretty fast in comparison to some of the other local ISP's. I avrg about 80-90 kbs off of high speed sites like M$. But when i initially start to download i can reach around 215-230 kbs. I was wondering what causes this initial speed burst, and if there was any way to maintain it? Any help/information would be greatly appreciated. Thanks P.S. The more techinical the better :D Link to comment Share on other sites More sharing options...
persianpsycho Posted December 9, 2002 Share Posted December 9, 2002 my connection does the same thing, im also curious as to how to maintain a high speed like that Link to comment Share on other sites More sharing options...
vespaman Posted December 9, 2002 Share Posted December 9, 2002 dsl supposed to have better stable speed compared to cable. my roomate using earthlink dsl and the speed average 1200down/300up but sometimes, rarely tho, only 300down/300down. now i'm using powerlink adelphia cable the average speed 3000down/100up but lately 300/60 or 1200/40.. if you are using cable...the only way is to reset your modem...silly huh :laugh: i would say you go to dslreports speed test and after than tweak your speed by going to dslreports tweaks then after reading the result download/open DRTCP.... i hope it works....but i'm sure dsl supposed to be more stable :blink: if it doesn't work...call your dsl provider (earthlink = covad) and ask them to reset your dsl line.....it worked for me before...or call your telephone company provider (ameritech etc) and ask them to check your phone line...cheers ;) Link to comment Share on other sites More sharing options...
gigapixels Veteran Posted December 9, 2002 Veteran Share Posted December 9, 2002 well i dunno if it's for the same reason, but i have measley 56k - dsl isn't yet available *grumble* - and it's the same way with me. i start at - DON'T LAUGH - like 18k/sec or so and then go down to the normal, crappy, ihatethisconnection 6k/sec. so i was wondering if it was for the same reason or what... Link to comment Share on other sites More sharing options...
Dazzla Veteran Posted December 9, 2002 Veteran Share Posted December 9, 2002 Because while you're selecting your directory to save it, it's downloading so it's actually downloaded some data already when the download progress bar starts. When it starts it's like "woah! xxxkb already there in 1 second!" then calculates the speed from that, over the course of the download the figure averages out. That technical enough :laugh: Link to comment Share on other sites More sharing options...
Atom Posted December 9, 2002 Author Share Posted December 9, 2002 Because while you're selecting your directory to save it, it's downloading so it's actually downloaded some data already when the download progress bar starts. When it starts it's like "woah! xxxkb already there in 1 second!" then calculates the speed from that, over the course of the download the figure averages out.That technical enough :laugh: ohh ok. so its just giving you that # to avrg out the bar. cool thx Link to comment Share on other sites More sharing options...
Atom Posted December 9, 2002 Author Share Posted December 9, 2002 dsl supposed to have better stable speed compared to cable. my roomate using earthlink dsl and the speed average 1200down/300up but sometimes, rarely tho, only 300down/300down. now i'm using powerlink adelphia cable the average speed 3000down/100up but lately 300/60 or 1200/40..if you are using cable...the only way is to reset your modem...silly huh :laugh: i would say you go to dslreports speed test and after than tweak your speed by going to dslreports tweaks then after reading the result download/open DRTCP.... i hope it works....but i'm sure dsl supposed to be more stable :blink: if it doesn't work...call your dsl provider (earthlink = covad) and ask them to reset your dsl line.....it worked for me before...or call your telephone company provider (ameritech etc) and ask them to check your phone line...cheers ;) wait so you can get 3 megabIts per second or 3 megabYtes per second???? theres a huge difference and if you can really get 3 megabYtes per second i would love to have the name of your isp and your monthly bill because ill sign right up :woot: Link to comment Share on other sites More sharing options...
brn2prgrm Posted December 9, 2002 Share Posted December 9, 2002 Atom, no this is because while you're chosing to open the file or save it, and where to save it to, your computer starts the download and buffers it, then when the download window pops up it "downloads" the buffer (causing the speedburst) and then the download finishes. Get what I mean? :p Link to comment Share on other sites More sharing options...
dreamsINdigital Posted December 9, 2002 Share Posted December 9, 2002 This is because while you're chosing to open the file or save it, and where to save it to, your computer starts the download and buffers it, then when the download window pops up it "downloads" the buffer (causing the speedburst) and then downloads then finishes it. Get what I mean? :p yup, brn2prgrm said it right :yes: . also from my experience, using a separate download manager seems to make the speed faster than using the built-in IE download manager (since it splits the download) :yes: :D :) Link to comment Share on other sites More sharing options...
Atom Posted December 9, 2002 Author Share Posted December 9, 2002 great! i get it now thx for the help :D Link to comment Share on other sites More sharing options...
PureEdit Posted December 9, 2002 Share Posted December 9, 2002 Because while you're selecting your directory to save it, it's downloading so it's actually downloaded some data already when the download progress bar starts. When it starts it's like "woah! xxxkb already there in 1 second!" then calculates the speed from that, over the course of the download the figure averages out.That technical enough :laugh: I dont think that is true, because some files that auto save, start out at 500k then goto 50k :p 1mb files take 3 seconds somtimes that are opened without prompting, so I think that somthing else is happening:) Link to comment Share on other sites More sharing options...
Atom Posted December 9, 2002 Author Share Posted December 9, 2002 I dont think that is true, because some files that auto save, start out at 500k then goto 50k :p1mb files take 3 seconds somtimes that are opened without prompting, so I think that somthing else is happening:) awww cmon i thought i had it all figured out and now you have to go and make things more complicated :p Link to comment Share on other sites More sharing options...
sphere Posted December 9, 2002 Share Posted December 9, 2002 this happens to me as well. some of my download start off at 1.5mb/sec and then go down to 600kb/sec. maybe it's downloading before it even displays the download dialog?... Link to comment Share on other sites More sharing options...
PureEdit Posted December 10, 2002 Share Posted December 10, 2002 maybe it's downloading before it even displays the download dialog?... No, Look at the activity light on your modem or network card before you click to download, nothing... Link to comment Share on other sites More sharing options...
sphere Posted December 10, 2002 Share Posted December 10, 2002 maybe it's downloading before it even displays the download dialog?... No, Look at the activity light on your modem or network card before you click to download, nothing... huh? how can it download before you even click the link? I'm talking about the time between when you click the link and when the save/download dialog appears. Link to comment Share on other sites More sharing options...
PureEdit Posted December 10, 2002 Share Posted December 10, 2002 If you have files auto open, it takes like 1/2 a second to open, the dialog, less somtimes, so there is somthing else going on to get 5 times your max speed at the start of a download :p I dont think it is actualy going at that speed, it is just IE showing it, because in mozilla it doesnt to that :p Link to comment Share on other sites More sharing options...
Atom Posted December 12, 2002 Author Share Posted December 12, 2002 If you have files auto open, it takes like 1/2 a second to open, the dialog, less somtimes, so there is somthing else going on to get 5 times your max speed at the start of a download :pI dont think it is actualy going at that speed, it is just IE showing it, because in mozilla it doesnt to that :p hmm ok sorry but that didnt really help me :p any other ideas? Link to comment Share on other sites More sharing options...
pHuzi0n Posted December 12, 2002 Share Posted December 12, 2002 Open up Task Manager and you'll see that it's a constant speed. As many people have stated, the initial burst is just IE being retarded. Link to comment Share on other sites More sharing options...
PureEdit Posted December 12, 2002 Share Posted December 12, 2002 Open up Task Manager and you'll see that it's a constant speed. As many people have stated, the initial burst is just IE being retarded. Yeah, that must be it :p But when I download things with FlashFXP or SmartFTP, large files start at 90k then goes to 50k :( Link to comment Share on other sites More sharing options...
MxxCon Posted December 12, 2002 Share Posted December 12, 2002 But when I download things with FlashFXP or SmartFTP, large files start at 90k then goes to 50k :( this has to do with TCP/IP download/upload ack packets and recv window size. initialy server will send you alot of data without waiting for ack packets. but as you beging to recieve data and send acks server will slow down to your maximum rate. i don't know if this makes any sense :) Link to comment Share on other sites More sharing options...
sphere Posted December 12, 2002 Share Posted December 12, 2002 yeh i think MxxCon is close. It's got nothing to do with MS Internet Explorer displaying the wrong speed, because my downloads DO go at the speed it says. I can download a 3mb file in 3 seconds from a good server. this is because it starts of really fast at 1mb/sec, and that's what IE displays. if it were a 10mb file it would download the first 3mbs in 3 seconds and then probably slow down to 600kb/sec... so IE is not being retarted. Link to comment Share on other sites More sharing options...
MxxCon Posted December 12, 2002 Share Posted December 12, 2002 actualy IE and mozilla do begin to download in background while you select dir where to save. it's a combination of both, download ack packets and background downloading. if you want obe sure do a test, click on a somewhat big file and then keep select dir window open then after a few min click save and you'll see file at like 50% w/ 100000mb/sec speed Link to comment Share on other sites More sharing options...
Miran Posted December 12, 2002 Share Posted December 12, 2002 wait so you can get 3 megabIts per second or 3 megabYtes per second???? theres a huge difference and if you can really get 3 megabYtes per second i would love to have the name of your isp and your monthly bill because ill sign right up Bandwidth is always measured in bits per second.. Link to comment Share on other sites More sharing options...
Oogle Posted December 12, 2002 Share Posted December 12, 2002 this has to do with TCP/IP download/upload ack packets and recv window size.initialy server will send you alot of data without waiting for ack packets. but as you beging to recieve data and send acks server will slow down to your maximum rate. i don't know if this makes any sense :) I think you have it backwards. The TCP protocol doesn't make data transfers start high and settle down to a lower "maximum" rate. It's the other way around. TCP data transfers usually begin with a "slow start" transfer rate to ensure that the connection is reliable. Once reliability has been established, the transfer rate increases. This ramp-up time usually takes a few seconds or less. You shouldn't use an IE download window to test your bandwidth anyways. Use online bandwidth tools like the one at www.dslreports.com or dedicated performance tools like PerfMon or System Monitor. Link to comment Share on other sites More sharing options...
MxxCon Posted December 12, 2002 Share Posted December 12, 2002 I think you have it backwards. The TCP protocol doesn't make data transfers start high and settle down to a lower "maximum" rate. It's the other way around. TCP data transfers usually begin with a "slow start" transfer rate to ensure that the connection is reliable. Once reliability has been established, the transfer rate increases. This ramp-up time usually takes a few seconds or less.You shouldn't use an IE download window to test your bandwidth anyways. Use online bandwidth tools like the one at www.dslreports.com or dedicated performance tools like PerfMon or System Monitor. depends on software. some programs send out many data packets without waiting for initial ack. some call it "fastsend" or "burstsend" :rolleyes: others indeed start out slowly. nobody said about using IE as bandwidth monitor... Link to comment Share on other sites More sharing options...
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