Comment 43 for bug 292054
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| Chris Bainbridge (chris-bainbridge) wrote | #43 |
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0e1f616
(Get the code!)
I take back the statement about the roaming causing packet loss - even with the Zydas card NetworkManager reports a roam to "none" for about 6 seconds, but it doesn't seem to actually cause any problems.
However, the throughput of ath5k is very poor. I'm running ping whilst transferring a single 435MB file with scp to test both bandwidth and latency.
With Zydas card and zd1211rw driver: ping from 1ms to 35ms. Bandwidth 2.1MB/s.
With Atheros card and ath5k driver: ping from 1ms to 3500ms. Bandwidth 573KB/s.
Atheros card is internal on a Thinkpad T42p laptop, Zydas card is USB. Even accounting for hardware differences, the performance variance is extreme - changing wifi chipset/driver should not cause 4x bandwidth difference when everything else is identical.
The brand of Zydas card I'm testing with is "Safe Home" - www.safehome.com.tw - appears to be a Taiwanese manufacturer that ships direct on ebay, shipping to Europe took around 3 days. Manufacturer supports Linux and the card is cheap and working good so far. http://
This testing was done with the Jaunty kernel.