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Distribution: Manjaro and CentOS at work, Ubuntu at home
Posts: 16
Rep:
Half bandwidth over wireless
I'm experiencing something kind of weird.
When I test my network speed (Speakeasy and speedtest) I get about 25/25mbps. Internally however although unmeasured it seems to be full 100mbps. Other computers and devices on wireless are getting about 50/50 mbps on the same tests. The problem is definitely specific to this laptop and specifically outside the local network.
You say the problem is definitely specific to that laptop, and specifically outside the local network. How have you tested internal network speeds using that laptop in comparison to the other devices present? Large file copies to the same local server/machine? If so, does the local internal network speed of that laptop also seem to suffer in comparison to the other wireless devices, or is it very much within the performance range of the others?
If the laptop seems in-line with all the other wireless devices for local network speeds and functionality then I would start investigating potential issues due to differences in software configuration between that laptop and the other devices; are the other devices also running linux, or are they running Windows etc.?
I ask this as I believe the SpeakEasy speedtest utilizes Flash, which Adobe sorta abandoned on the linux platform a while back (I think it remains at 11.2). There very well could be some differences if the laptop in question is running the test using an old version of Flash through Firefox on Ubuntu compared to the other devices running Windows with current versions. (Using Chrome, which integrates current Flash builds into the browser, should solve at least that part, though--that's the easiest way to have current Flash versions on linux computers)
Distribution: Manjaro and CentOS at work, Ubuntu at home
Posts: 16
Original Poster
Rep:
Quote:
Originally Posted by JeremyBoden
Is the slow device using wireless?
Is it using the same hardware as the faster devices?
For wireless, is the signal strength identical?
Has it got a reasonable CPU?
etc...
Just moved into an older house. I haven't yet retrofitted it or ran cable yet so It's still all wireless. I'll throw it onto a wired connection and let you know the difference.
This laptop had windows on it, it was getting full speed.
Distribution: Manjaro and CentOS at work, Ubuntu at home
Posts: 16
Original Poster
Rep:
Quote:
Originally Posted by jefro
Nic could be set to half duplex I guess. Oddly it can actually speed up data sometimes.
Not sure the test to those sites are very accurate. Try a real file transfer test back and forth to a local resource.
Internally I'll download a large file from my nas and let you know how it clocks.
944.2 MB file, over wireless. The nas is wired directly to the router. If it makes a difference this is an SMB share rather than NFS (which I'd heard can be slower).
Starting transfer at 10:30 on the nose.
Finished transfer at 10:35:35
That works out at 2.82 MB/sec
Not sure what the wireless overhead is - especially if you've got retransmissions.
I'd guess that's equivalent to about 30Mbit/sec??
How close were you to your router or wireless access point?
Distribution: Manjaro and CentOS at work, Ubuntu at home
Posts: 16
Original Poster
Rep:
Quote:
Originally Posted by JeremyBoden
That works out at 2.82 MB/sec
Not sure what the wireless overhead is - especially if you've got retransmissions.
I'd guess that's equivalent to about 30Mbit/sec??
How close were you to your router or wireless access point?
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