Computing Section?

Jack Harer

Jack Harer

Well-Known Member
As long as this site has been here, I' sure this has been asked before, but why is there no section for computer geeks and computing in general? It could be really helpful to a lot of folks out there.

Just a thought.

JH
 
Yeah, I would be willing to contribute as I'm a network and systems engineer so can help with questions. :joint:
 
Just Make a thread, they can't make sections for everything.

"Experienced computer techie Willing to answer your questions" something like that
 
Its a real shame mate... its a chip that should have hit 12 months ago to do well. Power draw is insanely high and Intel 2600k beats it in every way.
 
I'm nowhere near y'alls level, but I am a linux freak, and can trouble shoot windows and small networks with pretty good consistency. While we're here, I do have a Q for you guys. I have an atheros wireless card in a machine (Toshiba L35-2171) I have set up with Ubuntu 11.04, and get blazing speed on all sites (this one included) wired, but when I am wireless I still get blazing speed on most sites, but some (like this site) slow to a trickle like the guy swimming in caramel. Why??

I took the full immersion plunge into linux about 3 months ago, and will never run windows on a personal machine again, but some of these issues with wireless drivers can be frustrating. I don't believe its a driver issue at this point. Could it be the router settings?

I love Ubuntu, but am playing with Gentoo on my personal machine.
 
Jack Harer said:
I'm nowhere near y'alls level, but I am a linux freak, and can trouble shoot windows and small networks with pretty good consistency. While we're here, I do have a Q for you guys. I have an atheros wireless card in a machine (Toshiba L35-2171) I have set up with Ubuntu 11.04, and get blazing speed on all sites (this one included) wired, but when I am wireless I still get blazing speed on most sites, but some (like this site) slow to a trickle like the guy swimming in caramel. Why??

I took the full immersion plunge into linux about 3 months ago, and will never run windows on a personal machine again, but some of these issues with wireless drivers can be frustrating. I don't believe its a driver issue at this point. Could it be the router settings?

I love Ubuntu, but am playing with Gentoo on my personal machine.
Click to expand...

Greets felow *nix user.

I dont have much experience with linux but I use FreeBSD and other derivatives. I use an Ubuntu machine for a proxy/web filter and I ended up scrapping the drivers for the wireless interface... why.. too many problems.. What version of Ubuntu are you using?

I agree its not a driver issue as it would be more apparant.. It could be a couple of things though...

Check what wireless channel your router is broadcasting on and play about with that... however, it is most likely DNS or could be IPv6 lookups that are slowing certain things down.

You can try disabling IPv6 in the Firefox about:config area. Often the delay can be multiple timeouts relating to IPv6 requests. Also try alternative DNS servers... google offer their DNS servers for public use on 8.8.8.8 and 8.8.4.4

**edit** Just noticed your running 11.04. Just so you have covered all bases 11.10 (ocelot I think) is available so run a quick update.
 
I just reverted back to Natty from Ocelot, and I am using the Gnome interface as I hate Unity. Ocelot has the speed of windows (OK maybe not THAT bad, but bad enough to revert) I'll try the channels, as I just replaced the router a week or so ago. I have disabled IPv6 in the router, I'll check the FireFox settings. Thanx. This machine I'm setting up for a friend to use so he can get into the 21st century. He's not computer literate at all, and I need this to work before he gets it.
 
what are your MTU settings like on your wireless card, router, and what does your ISP support?

That would be the only thing I could think of that might cause slowness on certain sites from a specific computer, here is what might be happening:

Your MTU, or Maximum Transmission Unit, is a measure of the configured packet size that your computer uses when sending packets of data to other computers. In the context of ADSL, an MTU is commonly set somewhere between 1400 and 1500 bytes.
There turn out to be some critical sizes for the MTU, and a variety of performance problems can be caused (for different, but inter-related, reasons) if your MTU is set too high. Contrary to what might seem sensible, lowering your MTU can actually raise your data transfers speeds (up to a point) as a result.
The various adverse issues possible when your MTU is too large can include:

  • Very low download speeds on an otherwise 'clean' data path (no packet loss, low latency).
  • FTP or other file downloads which stall (stop working) after just the first 1-2 kilobytes downloaded (including the downloading of a server file listing in an FTP client, which is actually just another file download and is subject to the same issues)
  • Situations where some web or FTP sites work fine for downloads, but others operate slowly or not at all (the difference being based on whether the remote site is interacting with the network in a manner which makes this issue show up or not). In particular, some of these sites may be encountering a problem related to Path MTU Discovery, which is being made worse by your MTU being too large.
The solution is to try lowering your MTU to see if your issue(s) are resolved in this manner.
This webpage and utility may assist in this case: http://www.dslreports.com/front/drtcp.html
Hope that helps :)
 
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