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Post subject: ipw3945 slower than ipw2200? [is yesterday's news]
 Posted: Oct 23, 2007 - 10:14 PM
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Joined: Nov 30, 2006
Posts: 3481
Location: Budapest
Status: Offline
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After having baught a new notebook to replace my old VAIO I experience one thing: "downloading" a file from another box via ssh is half as fast as it was with the old box. I use mc for file transfer.
ipw2200: 2 MB/sec
ipw3945: 1 MB/sec (if it is in good mood, mostly 700 KB/sec)
Seems to be quite slow, and it does not matter if the router is 90cm or 4m away. No changes to the router have been done, sidux settings were and are default.
Just another info: mc was faster on ipw2200 than fish in konqueror or krusader, now speed is equal.
hubi |
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Bonitas stultitiaque sodales sunt.
Last edited by hubi on Nov 10, 2007 - 11:29 PM; edited 1 time in total
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Post subject: RE: ipw3945 slower than ipw2200?
Posted: Oct 24, 2007 - 05:57 AM
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Joined: Dec 09, 2006
Posts: 95
Location: Brisbane Australia
Status: Offline
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| On sidux with my 11g + wpa router , I get a steady 2.2 MB/s with ipw3945 and the same with iwl3945 but in both cases the connection is unreliable and often drops out completely. I installed kubuntu 7.10 a couple of days ago and found it uses ipw3945 and it seems to be reliable at 2.2 MB/s. I'm using knetworkmanager on both. |
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Post subject: RE: ipw3945 slower than ipw2200?
Posted: Oct 24, 2007 - 10:04 AM
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Joined: Nov 30, 2006
Posts: 3481
Location: Budapest
Status: Offline
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markb,
2.2 MB/sec is what I got with sidux Gaia on my now dead old box with ipw2200 and I expected that with ipw3945 as well. It's WPA encrypted as well, but ipw3945 far less drops than ipw2200.
Thanks for the reply,
hubi |
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Bonitas stultitiaque sodales sunt.
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Post subject: RE: ipw3945 slower than ipw2200?
Posted: Oct 24, 2007 - 10:49 AM
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Joined: Dec 02, 2006
Posts: 108
Status: Offline
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| are you using the iwl or the ipw3945d driver? |
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Post subject: RE: ipw3945 slower than ipw2200?
Posted: Oct 24, 2007 - 11:19 AM
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Joined: Nov 25, 2006
Posts: 2571
Status: Offline
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| ipw2200 can go up to ~3.0-3.1 MB/s under good circumstances (direct line of sight, ~2-3 m distance to the access point). While I have no idea about i[pw][wl]3945, feedback suggests that the free iwl3945 allows higher throughput than the non-free ipw3945 and has become less problematic in general. |
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Post subject: RE: ipw3945 slower than ipw2200?
Posted: Nov 06, 2007 - 11:01 AM
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Joined: Nov 30, 2006
Posts: 3481
Location: Budapest
Status: Offline
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Back to the non-free driver (2,1 MBps both directions). The free driver does not understand 11g here. When I put the router to "11g only" I cannot connect at all with the free driver. Running just 11b would explain the slow connection.
hubi |
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Bonitas stultitiaque sodales sunt.
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Post subject: RE: ipw3945 slower than ipw2200?
Posted: Nov 06, 2007 - 11:33 AM
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Joined: Nov 25, 2006
Posts: 534
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I get 2,3-2,4 MB/s since weeks with the free driver and WPA2!! 
the non-free driver was a real pita  i got maximum 700KB/s 
Config was created with sidux tools in both cases. |
_________________
Why do strong arms fatigue themselves with frivolous dumbbells?
To dig a vineyard is worthier exercise for men.
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Post subject: RE: ipw3945 slower than ipw2200?
Posted: Nov 06, 2007 - 02:28 PM
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Joined: Nov 30, 2006
Posts: 3481
Location: Budapest
Status: Offline
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That's weird. Just the other way round here. Really would like to use the free one, because building kernel modules every kernel upgrade is not funny either.
Well, I used apt-get for installing the free driver (or was it shipped with eros pre 1?). Might give the tools a shot at the next kernel upgrade, now I am not touching anything 
hubi |
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Bonitas stultitiaque sodales sunt.
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Post subject: RE: ipw3945 slower than ipw2200?
Posted: Nov 10, 2007 - 11:26 PM
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Joined: Nov 30, 2006
Posts: 3481
Location: Budapest
Status: Offline
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Well, well, well. I am now as fast as it can be with the new driver as well. There are only two differences to my setups before:
1. 2.6.23.1-slh-smp-22 (before it was 2.6.23.1-slh-smp-19)
2. I kicked blacklisting of ipw 3945 in /etc/modprobe.d/mac80211 (needed that for the old driver)
3. The old driver, firmware, module were apt-get removed but not purged (don't know if that affects anything)
Overall I think the new driver is more stable than the old built kernel module which gave me instable connections to the router (lost it's handshake ... like on the old ipw2200).
Happy now,
hubi |
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Bonitas stultitiaque sodales sunt.
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