On Sun, Feb 7, 2016 at 9:09 AM, Kalle Valo <kvalo@xxxxxxxxxxxxxx> wrote: > Nikolay Martynov <mar.kolya@xxxxxxxxx> writes: > >> I'm seeing strange behavior on my intel 6300 card. >> >> If I measure TX performance just after boot (iperf in tcp mode), I get this: >> >> [ 3] 0.0-10.1 sec 11.2 MBytes 9.32 Mbits/sec >> >> But if create and enable monitor interface (with command like 'sudo >> iw phy phy0 interface add moni0 type monitor && sudo ifconfig moni0 >> up') I get this: >> >> [ 3] 0.0-10.1 sec 34.8 MBytes 29.0 Mbits/sec >> >> That's about three times boost in throughput by just creating an >> interface (without even using it). >> Doing 'ifconfig moni0 down' bring performance back to 10Mbits range. >> >> Experiments are done with laptop being ~5m from router and not moving. >> These results are repeatable, i.e. not caused by random things like >> other stations transmitting, or channel being busy. >> >> Is this something expected? Is there any reason performance can be as >> good without monitor interface existing? > > Maybe the monitor mode disables power save automatically? > That could be an option although I remember to have disabled power save by default (cough..). That happened in 3.17 IIRC. -- 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
