Extremely Slow Internet

So i moved into a new apartment and brought my make and hp and hooked them up on D-link wireless router. The problem is the mac internet is so slow compared to my vista HP going wireless and my room mate running off another router and its flying, he has XP. But this is crazy, if i run XP on parallels on my mac the internet goes back to flying again. Its just when you run the internet on the Mac OSX. And its just not my computer, its every mac in the complex, does anyone have an ides how it could just effect the mac operating system?

Try issuing this command:

sudo sysctl -w net.inet.tcp.rfc1323=0

and see if it improves. If it does then it's tcp window scaling causing a problem with the equipment and there's a persistent fix (since this is just a sysctl command it will be lost at reboot.)

No, i do not see any improvement.

Ok, so it wouldn't be the window scaling, are the setups identical? Same gateways, dns servers etc?

Yes they are, for some reason this entire complex hates mac. Though everyone runs there own brand of wireless routers and no ones router works with the macs well.

hrm, is it just Safari? Have you tried same sites with Firefox? I'm trying to think about what may be similar... since well.. I've had no speed issues with OS X on the Internet in 'general'

Nope its all browers in general.

Ohh if you try to ping a website, it takes like a minute to get the first ping, then after that the next ten come fast.

Ok, lets try a traceroute see if we can figure out where it breaks down.

traceroute <website>

THis is to yahoo

Traceroute has started ...

traceroute to www.yahoo-ht3.akadns.net (209.191.93.52), 64 hops max, 40 byte packets
1 10.42.2.1 (10.42.2.1) 16.207 ms 0.561 ms 0.229 ms
2 70.247.84.49 (70.247.84.49) 0.711 ms 0.636 ms 0.763 ms
3 70.249.236.213 (70.249.236.213) 36.247 ms 135.375 ms 84.439 ms
4 151.164.242.22 (151.164.242.22) 195.393 ms 171.240 ms 87.992 ms
5 ex2-p2-1.eqdltx.sbcglobal.net (151.164.42.19) 160.957 ms 35.698 ms 46.718 ms
6 asn10310-11-yahoo.eqdltx.sbcglobal.net (151.164.250.202) 47.025 ms 84.431 ms 48.887 ms
7 ae1-p100.msr1.mud.yahoo.com (216.115.104.97) 87.448 ms 93.304 ms ae2-p100.msr1.mud.yahoo.com (216.115.104.105) 75.278 ms
8 te-8-1.bas-c2.mud.yahoo.com (68.142.193.7) 142.612 ms te-9-1.bas-c1.mud.yahoo.com (68.142.193.9) 64.814 ms te-8-1.bas-c2.mud.yahoo.com (68.142.193.7) 128.703 ms
9 * * *
10 * * *
11 * * *
12 * * *
13 * * *
14 * * *
15 * * *
16 * *

Ok, there's a significant slowdown once it's outside your local lan. If you do the same thing (although the command in windows is tracert) from the vista machine does it show the same route?

Dysfunction said:

Ok, there's a significant slowdown once it's outside your local lan. If you do the same thing (although the command in windows is tracert) from the vista machine does it show the same route?

Click to expand...

Here you go. THis is from the Vista machine to yahoo.


Tracing route to f1.www.vip.mud.yahoo.com [209.191.93.52]
over a maximum of 30 hops.

1 * * * Request timed out.
2 * * * Request timed out.
3 * * * Request timed out.
4 * * * Request timed out.
5 * * * Request timed out.
6 * * * Request timed out.
7 * * * Request timed out.
8 * * * Request timed out.
9 51 ms * 59 ms f1.www.vip.mud.yahoo.com [209.191.93.52]

Trace complete

This is what the trace looked like when i traced it when it ran through parallels through the mac on windows XP.

Tracing route to yahoo.com [68.180.206.184]
over a maximum of 30 hops.

1. 128 ms 117 ms 95 ms w2.rc.vip.sp1.yahoo.com [68.180.206.184]

Trace complete