Thanks Emmanuel. On 01/12/15 06:03, Emmanuel Grumbach wrote: > On Sun, Jan 11, 2015 at 10:23 PM, Chris Clayton > <chris2553@xxxxxxxxxxxxxx> wrote: [snip] >>> >>> The first one (c93edc639392df733c7d72db4376a9add775d18a) is tagged for stable. >> >> Ah, sorry I missed that. >> >>> Are you using bluetooth? >> >> Yes, I have a bluetooth mouse and use bluetooth for audio from time to time. >> >>> Are you able to tell me which of the two really helps? >> >> It's c93edc639392df733c7d72db4376a9add775d18a that helps. With that applied, I can set off a task which, in a loop, >> continually copies a 180MB file from a server on my network. The network remained stable for over 30 minutes before I >> killed the task. Without the patch, the network fails during the first iteration of copying the file. >> Just by way of confirmation, I'm now running 3.19.0-rc4 with c93edc639392df733c7d72db4376a9add775d18a applied and my network is stable. None of the other patches from iwlwifi-fixes that I was previously using are applied. Thanks for your help. >> a9dc5060bf3a32ac3dad472f15416054b92dc5b5 doesn't seem to have any effect on the instability. > > Ok - I am not surprised - thanks. > c93edc... allows to use 2 antennas instead of one only. Technically, > one would be enough, but apparently, in your configuration, using 2 > antennas allows to improve reliability. > >> >> >>> Unless I am missing something, the first one >>> (c93edc639392df733c7d72db4376a9add775d18a) should help only if you >>> disabled power save. Is that the case? >> >> Not that I know of. The only power-related thing in my init scripts is echoing 5 to /proc/sys/vm/laptop_mode, which I >> believe configures disk activity to save power. The mouse does have a power saving feature, however. According to the >> manual, it reduces its power consumption in steps the longer it is inactive. As I frequently work in kde's konsole >> terminal application, mouse inactivity is common. >> >> Hope this helps and feel free to request additional information. > > Ok - I checked the code and we enable the redundancy mentioned above > (2 antenna instead of 1) even if power save is enabled. > FWIW - this redundancy is also called "diversity". <Smile>. Over 30 years working in the IT industry tells me that is a trick vendors have been using for a long time in order to try and confuse customers into buying something they've already got! :-) > > Thanks. > >> >> Chris >>> -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
