Can maxing my upload portion of my bandwidth affect my download speed?

erikiksaz

Diamond Member
Nov 3, 1999
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Just wondering because in Direct connect, i have 3 slots open, and they're taking ~12 k out of my alotted 128kbps upload rate. Since they're nearly maxing my upload speed, will this affect my downloads? I do notice that my download speeds to go down, but i'm not sure if i can pinpoint it to the uploads. Anyone?
 

isekii

Lifer
Mar 16, 2001
28,578
3
81
if you're uploading at 12kb/s then you've already maxed out your upload speed..

hence hindering your download speed...

you most likely have dsl~~

I had dsl... and when ever i upload.. my download turns to crap~
 

Ronstang

Lifer
Jul 8, 2000
12,493
18
81
From my understanding the answer to your question is no. I'm not an expert but the bigwig Communications Engineer from my cable company lives on my street and I posed this question to him a few weeks ago and he confrimed my belief that upload and download pathways are independent of each other and thus traffic on one does not hinder traffic on the other.
 

schdaddy

Golden Member
Oct 1, 2000
1,015
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i used to believe what Ronstang said but after having DSL i've notice that if I hit my max upload my download sucks
 

Ronstang

Lifer
Jul 8, 2000
12,493
18
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I have not had the same experience. Once I was downloading about 12 songs on WinMX at a total of 300kb/s while uploading 5 at a total of 100kb/s so I don't experience any "traffic" affect on my system but I am using cable so I can't make any statements regarding DSL.
 

isekii

Lifer
Mar 16, 2001
28,578
3
81
i'm on cable now..

and I can do the same..

cable isn't affected as much as DSL is I guess..

when I had service with MSN/Northpoint.. and whenever I upload.. my download gave me less than 5kb ( 1.5mb down /128k up )

now I have cable ( 2.5mb down / 384k up ) and I get full performance when I upload and download~
 

goog40

Diamond Member
Mar 16, 2000
4,198
1
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I have cable capped at 128kbps up, and upping at just 2-3 kb/s will cause packet loss and ping spikes in CS. And my connection can consistently do 16 kb/s up, so the 2-3 kb/s is nowhere near its capped limit
 

ricerx

Golden Member
Jul 27, 2001
1,073
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i just got my dsl connection bumped again from my friend that works at the noc. I pay for 608/128 and am 12,000 ft (fairly far) from my CO but I was bumped up to a consitent 1300 kbs up and 680 kbs down (160 KBS/80 KBs). He just bumped me up again and now I get a consistent 1790 Kbs down and 680 kbs down. :D My connection doesn't get affected by upload and download simultaneously. I was on morpheus the other night and was downloading at at 210 KBs and uploading about 70 KBs.
 

Gunbuster

Diamond Member
Oct 9, 1999
6,852
23
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When you download using most protocols your system sends an Ack. packet (acknowledgement) back to the server saying you got the data and to send more, If your upload is allready maxed the Acks have to fight for bandwidth.

Thats just my theroy
 

Ronstang

Lifer
Jul 8, 2000
12,493
18
81
If Gunbuster is correct that explains why I never experience any problems. I have a lot (comparatively speaking) of upload bandwidth and I have never reached it's limit in any p2p software. Usually the combination of people downloading from me have less collective download bandwidht than my upload bandwidth.
 

erikiksaz

Diamond Member
Nov 3, 1999
5,486
0
76
ASDfdsafklasdlfdsfajjkldlkjfddkfdslj, DAMNIT DAMNIT DAMNNIT!!!!!!!! I was downloadinG off this one person in Direct Connect at 60k per second, then this one fool comes and downloads off me, GUESS WHAT HAPPENS?!!!!!!!!!!!!!!!!!!!! MY DOWNLOAD DROPPED TO 20K PER SEC, AaaHHHHHHH ASDLKDFSDFSAFDSLJFSD;LKJDFKJL;FSDKJLFSDLK.
 

Kadarin

Lifer
Nov 23, 2001
44,296
16
81
I have Speakeasy sDSL (768Kbps), and my upload and download bandwidth seem totally independent of each other. I run a BearShare gnutella node with 7 upload slots, and my upload bandwidth is typically maxed out most of the time. I can still download at about 65-70K/sec, and webpage response time is typically quite snappy.

-j
 

Rendus

Golden Member
Jul 27, 2000
1,312
1
71
Cable modems and ADSL are half duplex. If your upload is maxed, you have no bandwidth left to download.

SDSL is full duplex. Your upload and download can be sent at the same time, so no bandwidth issue.
 

gopunk

Lifer
Jul 7, 2001
29,239
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<< Cable modems and ADSL are half duplex. If your upload is maxed, you have no bandwidth left to download.

SDSL is full duplex. Your upload and download can be sent at the same time, so no bandwidth issue.
>>



does it depend on the modem though? my understanding is that very few people with cable modems actually max out their modem's limit... it usually hit's the isp's limit before that.
 

ppaik

Platinum Member
Nov 11, 2000
2,408
0
76


<< Cable modems and ADSL are half duplex. If your upload is maxed, you have no bandwidth left to download.

SDSL is full duplex. Your upload and download can be sent at the same time, so no bandwidth issue.
>>




Agreed
 

Rendus

Golden Member
Jul 27, 2000
1,312
1
71


<<

<< Cable modems and ADSL are half duplex. If your upload is maxed, you have no bandwidth left to download.

SDSL is full duplex. Your upload and download can be sent at the same time, so no bandwidth issue.
>>



does it depend on the modem though? my understanding is that very few people with cable modems actually max out their modem's limit... it usually hit's the isp's limit before that.
>>


It doesn't matter. It can only send as fast as the ISP allows, but it spends all it's time trying to send, so it never receives until there's a break in the send (it actually makes it worse, as a packet will take longer to send).