| TIP: Click on subject to list as thread! | ANSI |
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| subject: | USR upgrade |
SB> SA> V.Mach 43k2 protocal will speed QUAKE up even more :) :) SB> No it wont sorry, the problem is not, and has never been bandwidth, it SB> is the roundtrip time or ping time that is mainly responsible, and a SB> faster connection to your ISP wont help. SA> Funny then, when the ISP's modems upgraded from 28k8 to SA> 33k6 my ping lowered, By how much? Maybe they also upgraded other hardware and/or setup too? SA> A Faster connection lowers ping (roundtrip) times as the SA> packets get where they are going FASTER :) Ok, let's look at a 60-byte ping packet. Let's call it 75 bytes after adding UDP and PPP headers .. at 28800 bps, no compression, sending that would take: 75 * 10 / 28800 = 26 milliseconds. At 33600, 75 * 10 / 33600 = 22 ms. So both ways you might expect an 8 ms improvement due to the higher rate, which is not really a large part of the usual 200-400 ms ping times .. most of which is fighting its way through the stack of software layers. SA> I say, Yes, V.Mach will help, HEAPS... A few milliseconds, as far as RTT times for short packets go, anyway. Cheers, Ian --- MaltEd 1.0.b5* Origin: Puddin' BBS Nimbin 066-89-1843 V.32bis/V.42bis (3:626/660) SEEN-BY: 50/99 54/99 620/243 623/630 626/660 661 664 666 667 673 640/820 SEEN-BY: 711/401 413 430 501 808 934 712/311 407 505 506 517 623 624 628 704 SEEN-BY: 712/841 888 713/317 714/906 772/20 800/1 @PATH: 626/660 711/401 712/624 711/934 |
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