Wireless networking on Linux kind of sucks

Questions about networking.
In the Original Post please also include the output of inxi -FNzxx
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grizzler
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Wireless networking on Linux kind of sucks

Postby grizzler » 04 Jan 2017 14:18

Bit of a sweeping statement? It's the only conclusion I could reach after trying to get this 'new' (well, less old than the other one...) test machine to talk to my router at an acceptable speed.

This is Windows 7:
w7.png
w7.png (30.76 KiB) Viewed 1199 times
SolydX 8 Jessie:
s8.png
s8.png (30.64 KiB) Viewed 1199 times
SolydX EE 9 Stretch:
s9.png
s9.png (29.9 KiB) Viewed 1199 times
All three the same hardware setup and connecting to the same server. Software fully up to date. Same results irrespective of time of day.

Stretch is just ridiculous, but Jessie really isn't that much better.

Attached is a zip file with the wireless-info outputs for the SolydX setups (uncompressed is too much text for the forum). This also includes various bits of info otherwise provided by inxi. And yes, the iwlist scan output shows 54Mb/s max, but it does that for both and the Jessie setup clearly goes well above 54Mb/s, so I don't think iwlist's idea of the available bit rates is very reliable.

If anyone has any idea what could be causing this, please do tell.
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Frank

SolydX EE 64 - tracking Debian Testing

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palimmo
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Re: Wireless networking on Linux kind of sucks

Postby palimmo » 04 Jan 2017 15:07

My laptop with 3 different OSs. No big differences:

SolydK 8:

Ping 18 ms
Download 10.84 Mbps
Upload 0.72 Mbps

Linux Mint 18.1:

Ping 19 ms
Download 10.71 Mbps
Upload 0.74 Mbps

Windows 7:

Ping 18 ms
Download 10.59 Mbps
Upload 0.71 Mbps
Proud user of SolydK!

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Zill
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Re: Wireless networking on Linux kind of sucks

Postby Zill » 04 Jan 2017 19:53

grizzler: Could you post the same three Speedtests using a wired (ethernet) connection for comparison?

SolydForEver
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Re: Wireless networking on Linux kind of sucks

Postby SolydForEver » 04 Jan 2017 20:00

Did a test as well on my laptop with SolydX and Win10. Both showed the same, although much lower values than Grizzlers, for download and upload. All values were around 40mb/s. It's not high even though i sit here besides an accesspoint (a demoted router) but no difference between Linux and Windows. Maybe my values still can be handled by Linux, no idea. I saw Grizzlers download to be pretty high on Windows, something I have never had here at home, at least not wireless. Can it be that these values are just too much voor Linux?

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Zill
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Re: Wireless networking on Linux kind of sucks

Postby Zill » 04 Jan 2017 20:35

grizzler: From "Wireless problem with Intel WiFi Link 5100":
You are using the right driver (iwlwifi-5000-5.ucode ) but it dosn't work under the 3.19 kernel version , You nedd to compile the iwlwifi Backported driver:
iwlwifi-5000-ucode-8.83.5.1-1
While this fix is based on Ubuntu, it possibly also applies to Debian as you have module iwlwifi-5000-5.ucode loaded for both stable kernel 3.16.0-4-amd64 and testing kernel 4.8.0-2-amd64.

See https://wireless.wiki.kernel.org/en/use ... rs/iwlwifi

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grizzler
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Re: Wireless networking on Linux kind of sucks

Postby grizzler » 04 Jan 2017 20:54

Thanks for that, Zill. I'll have a go at it tomorrow.

The ethernet port of this machine is 100Mb/s max ('new' is relative...). All download speeds end up around that (92.54, 89.79 and 97.08 respectively - yes, Stretch is actually the fastest here).

Edit
To be honest, it could be the cable. It's just cat5.
Nope. "Fast Ethernet". 100Mb/s.
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SolydX EE 64 - tracking Debian Testing

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Zill
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Re: Wireless networking on Linux kind of sucks

Postby Zill » 04 Jan 2017 23:12

TBH, speeds of 100Mb/s and over make me quite jealous! I am bumping along with around 10Mb/s ADSL here so the LAN speed is irrelevant... :(

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grizzler
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Re: Wireless networking on Linux kind of sucks

Postby grizzler » 05 Jan 2017 13:14

Yes, ADSL over copper often isn't much fun these days. The coax cable (DOCSIS) speeds have just been going up and up over here. The next step (EuroDOCSIS 3.1) promises speeds of well over 1Gb/s.
I don't even have the "fast" subscription, by the way. Just the "average" one...

The driver turns out to be the same one as the one already installed in Stretch's /lib/firmware: v8.83.5.1 build 33692. The file had a different hash, so I tried it anyway. Same speed, essentially: 63.98 down, 11.43 up, 19ms ping.

While that really isn't too bad as such, the thing that bothers me is Windows downstream going more than twice as fast.
Frank

SolydX EE 64 - tracking Debian Testing

kurotsugi
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Re: Wireless networking on Linux kind of sucks

Postby kurotsugi » 05 Jan 2017 20:14

that's quite an impressive one. in my experience linux usually slightly faster than Windows. the internet connection is more stable too. I think there are three factors :
1. windows is using different configuration which focused on speed while linux is on stability.
2. you have a bottleneck somewhere
3. a driver issue

in many case it usually a driver issue but it might hard to investigate it.


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