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Network speed on MBP caped at 20Mbit.

Have you tried other computers / ipods / iphones / windows machines / anything to see if your ISP really is giving you 80 megabits a second?
 
It's not interface speed - I just tested at 100mbit (plugged into my WRT54GL) and got the same speeds as gig.

For posterity, here's my machine on gig ethernet:
882283919.png


Here it is on 802.11n right next to the router (reporting 130mbps signal rate)
882285186.png


I have no idea.
 
So wait, you just broke 20mbit... or is this another machine? :confused:
hypermog said:
Have you tried other computers / ipods / iphones / windows machines / anything to see if your ISP really is giving you 80 megabits a second?
Click to expand...
I doubt a consumer grade router is able to sustain 80mbit over WAN anyway.
 
unfortunately my old router is fried:( so that test cant be done

my network like like this
Code: 
PC ==== 100Mb swith -------- WNDR3700 (wifi, gig switch) ----- WAN

What is saw with iperf whe i pluged the MBP in to the 100 switch was the MBP could only handle around 40 - 60 Mb as the server

but plug it in to the gig socket on the WNDR3700 and it managed 104 - the limit being the 100Mb switch the pc is plugged into.

This testing cam about because my ISP announce they were upgrading be to 120Mb, so I have ordered a gig switch to replace the 100 , but this was when i noticed the MBP issue. its very frustrating to be paying for this bandwidth nd only being able to use 16% on my primary machine

defiantly seems the MBP is sensitive.

I need to figure out where to get another router
 
RedReplicant said:
So wait, you just broke 20mbit... or is this another machine? :confused:

I doubt a consumer grade router is able to sustain 80mbit over WAN anyway.
Click to expand...

I have several machine on the network and the MBP is the only one that can not get above 20.
 
ozreth said:
Hm.

My download speeds are terrible so I ran this test. I have the 20 dollar cox plan which is 3mbs (horrible I know) and my speedtest is showing my download speed at 1mbps.

This normal?
Click to expand...


Try different servers, some can not handle full loads San Jose California is my most reliable, but that depends on what is between you and the server.
 
Update

Ok I saw in another forum some one saying that he had problems and changed his cable modem to a surfboard and solved it.

My capping happens with the modem plugged directly into the MBP, so i phoned my ISP and they agreed to send me a new modem. Should arrive next week along with a new gigabit switch and cat6 cables.

I will post the results

J
 
very odd OP. as i can do internal transfer as WELL over 20mbit, my net is unfortunately limited to ~20mbit so i cant reproduce the limitations you are having.

if the new modem does not work then perhaps try install bootcamp on ur computer and see what happens then, i guess parallels might also help as well.
 
DoFoT9 said:
if the new modem does not work then perhaps try install bootcamp on ur computer and see what happens then, i guess parallels might also help as well.
Click to expand...
It is a network configuration or network hardware issue, not a MBP issue. What would cause it I do not know though.
 
RedReplicant said:
It is a network configuration or network hardware issue, not a MBP issue. What would cause it I do not know though.
Click to expand...

you cannot say with 100% certainty that it's the cause of the problem. if the OP were to plug in another PC into EXACTLY the same port as what the MBP gets plugged into then it indicates quite clearly that it would be the MPB itself. however, reasoning indicates that it might not be the actual cause of the problem.

OP - had you changed any settings on the modem/router etc?
 
DoFoT9 said:
you cannot say with 100% certainty that it's the cause of the problem. if the OP were to plug in another PC into EXACTLY the same port as what the MBP gets plugged into then it indicates quite clearly that it would be the MPB itself. however, reasoning indicates that it might not be the actual cause of the problem.

OP - had you changed any settings on the modem/router etc?
Click to expand...

If he is reporting other users are swapping out cable modems and no longer having an issue and I am reporting a different brand cable modem / router setup without the issue then what does the lead us to conclude? Yes, the MBP would be the key in the compatibility issues meaning it probably is the one with the problem but the easier (and cheaper) workaround is the network hardware. Really weird issue though.
 
RedReplicant said:
So wait, you just broke 20mbit... or is this another machine? :confused:

I doubt a consumer grade router is able to sustain 80mbit over WAN anyway.
Click to expand...

Speed doesn't seem to be capped at exactly 20mbps over 802.11n, but close. I've never broken 23mbps wireless. The 58mbps speedtest is being routed by the exact same device. The WNR3500L is overpowered for a home router, it has a 480MHz CPU and 64MB RAM. The CPU never breaks 30% utilization when NATing 60mbps in via the wan port. My cable modem is a brand new DOCSIS 3.0 part for Comcast business class.

Pretend for a second that I know what I'm doing, please. The condescension is unnecessary. :)
 
akramer said:
Speed doesn't seem to be capped at exactly 20mbps over 802.11n, but close. I've never broken 23mbps wireless. The 58mbps speedtest is being routed by the exact same device. The WNR3500L is overpowered for a home router, it has a 480MHz CPU and 64MB RAM. The CPU never breaks 30% utilization when NATing 60mbps in via the wan port. My cable modem is a brand new DOCSIS 3.0 part for Comcast business class.

Pretend for a second that I know what I'm doing, please. The condescension is unnecessary. :)
Click to expand...
Hrm, I am confused then - I thought the thread was about wifi/wired. I do have your same issue with the 20-25mbit range maxing out wireless wise though.
Fair enough, I was being a douche last night. I'm sorry. :)
 
@akramer

Just for interest sake I downloaded and installed ccproxy on my windows box and them configured my MBP to use the proxy. The mbp is now the fastest its ever been :eek:



There is defiantly something strange going on

J
 
@akramer

do you have the hardware to do a test using iperf like this ( i dont )
Code: 
MBP ---- router --- router --- WAN
                        |
                        |
          PC -----------

because the two routers would be offering different sub nets, we could eliminate this as inter subnet problem

julian
 
JulianY said:
@akramer

do you have the hardware to do a test using iperf like this ( i dont )
Code: 
MBP ---- router --- router --- WAN
                        |
                        |
          PC -----------

because the two routers would be offering different sub nets, we could eliminate this as inter subnet problem
Click to expand...

Yes, actually, I do. I won't be back at my house until Sunday evening, I'll test this out then. Thanks for the idea - I'm quite curious to see the results.

The cable modem I have is actually a router as well. I have a static IP, so currently it's routing traffic for a /30, but it can simultaneously be a DHCP and NAT device. I'll plug my G5 into it and then I can test this theory. Traffic on the internal side of my Netgear router will be sent identically to devices plugged into the cable modem as it would to the internet.
 
OK so my gigabit switch arrived, with the expected improvement in LAN performance. But no difference to the LAN - WAN performance, well I expected that. Still waiting for the new model due sometime this week.

J
 
Problem Solved

So allow me a couple of lines to provide closure;

I took my laptop and router to a near by school and ran a couple of tests on their LAN and internet connection

Running ipferf on the LAN produced to following

Code: 
julian-youngs-macbook-pro:iperf-1.7.0-powerpc-apple-darwin6.4 julian$ ./iperf -c 192.168.1.117
------------------------------------------------------------
Client connecting to 192.168.1.117, TCP port 5001
TCP window size:  129 KByte (default)
------------------------------------------------------------
[  3] local 192.168.1.109 port 57677 connected with 192.168.1.117 port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0-10.0 sec  1.09 GBytes   932 Mbits/sec

so I put my netgear router between the MBP and the LAN and ran the same test again.

Code: 
julian-youngs-macbook-pro:iperf-1.7.0-powerpc-apple-darwin6.4 julian$ ./iperf -c 192.168.1.117
------------------------------------------------------------
Client connecting to 192.168.1.117, TCP port 5001
TCP window size:  129 KByte (default)
------------------------------------------------------------
[  3] local 192.168.2.100 port 57714 connected with 192.168.1.117 port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0-10.0 sec   450 MBytes   377 Mbits/sec

OK some performance drop but 377Mbits/sec is not bad for a LAN to WAN speed and no real performance issue, being over three times the my actual WAN speed.

Also at the school the laptop speed test was giving 50 Mbits/sec.

So i think we can eliminate the sub-net possibility.

My new Cable modem arrived this afternoon, and guess what that solved to problem :)



I should be getting 80, but the ISP says it will not run full speed for about 3 hours after it has first been initialized, whilst their systems figure out I am on a +Plus account.:confused:

So What can I say? I think we have eliminated just about every possibility and it looks very much like an issue with the cable modem. The PC I have is an old one and I guess more spec tolerant. In otherwords my guess the that some MPB are fussy about tolerances in the specification of cable modems.

Well thanks to all of you for your support and help

J
 
RedReplicant said:
What use does anyone have for more than 500KB/s upload on a home connection other than torrenting?
Click to expand...

maybe people web host from home, backup to off-site servers for their data, share data with friends, remote in using VNC etc (which requires fast upload speeds) - and much more :) depends on the user i guess.
 
DoFoT9 said:
maybe people web host from home, backup to off-site servers for their data, share data with friends, remote in using VNC etc (which requires fast upload speeds) - and much more :) depends on the user i guess.
Click to expand...

Exactly, a home connection. You shouldn't be hosting servers on a personal connection... The rest of the listed applies to maybe .01% of users, who are probably the people that can find justification to pay for a business line at home.

Basically, for the normal user and most power users 500k/s upload is more than enough and probably not worth being called terrible.
 
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