From: Adrian Chadd <adrian@freebsd.org>
To: ath9k-devel@lists.ath9k.org
Subject: [ath9k-devel] Performance degradation when monitor interface is enabled
Date: Tue, 23 Oct 2012 12:20:30 -0700 [thread overview]
Message-ID: <CAJ-Vmok-P4HQzZJu+fTfU7VsB8qU8qzhg=arSD14+cg==inw=Q@mail.gmail.com> (raw)
In-Reply-To: <5086EA9A.6030400@mailservices.uwaterloo.ca>
On 23 October 2012 12:06, Ali Abedi <a2abedi@uwaterloo.ca> wrote:
> Hello,
>
> I asked this question once before but didn't get a satisfying answer. In
> our experiments, with two laptops running Ath9k driver we get about 29
> Mbps bandwidth (802.11g configuration + UDP traffic), but when the
> monitor mode interface is enabled on the sender the throughput drops to
> 25 Mbps. This is not a performance issue. The performance is unaffected
> if monitor mode interface is enabled on the receiver (no monitor
> interface on sender). I really appropriate your answer.
Start by looking at what's different. The only real change monitor
mode makes int he driver is fondling the RX filter.
It's possible that with monitor mode on, there's more stuff being
punted up to the driver on the receive side (all the other stuff in
the air) and that's causing things to slow down.
Adrian
next prev parent reply other threads:[~2012-10-23 19:20 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-21 2:32 [ath9k-devel] ath9k_htc and reported mactime Thomas Pedersen
2012-10-21 2:41 ` Thomas Pedersen
2012-10-21 2:41 ` [ath9k-devel] " Thomas Pedersen
2012-10-22 14:31 ` Adrian Chadd
2012-10-22 14:31 ` Adrian Chadd
2012-10-23 19:06 ` [ath9k-devel] Performance degradation when monitor interface is enabled Ali Abedi
2012-10-23 19:20 ` Adrian Chadd [this message]
2012-10-23 20:36 ` Ali Abedi
2012-10-23 20:51 ` Adrian Chadd
2012-10-25 19:46 ` Ali Abedi
2012-10-25 19:52 ` abhinav narain
2012-10-27 19:24 ` [ath9k-devel] Channel busy cycles Ali Abedi
2012-10-27 23:42 ` Adrian Chadd
2012-10-27 23:50 ` Ali Abedi
2012-10-28 6:25 ` Adrian Chadd
2012-10-28 13:59 ` Ali Abedi
2012-10-28 18:40 ` Adrian Chadd
[not found] ` <508DADC6.9080309@mailservices.uwaterloo.ca>
2012-10-29 2:33 ` Adrian Chadd
2012-10-29 3:49 ` Wright, Brett
2012-10-29 3:54 ` Adrian Chadd
[not found] ` <50907DD8.1030607@mailservices.uwaterloo.ca>
[not found] ` <CAJ-Vmo=E_iDMYO6sP7dVqfnNFTMR1xKT5Y4-7dDGL2EPYqt0cA@mail.gmail.com>
[not found] ` <509168B9.7000508@mailservices.uwaterloo.ca>
2012-10-31 18:54 ` Ali Abedi
[not found] ` <CAJ-Vmok=5kzx_5swJm1UOz=4U2vM0YgChGnxvVX45hdpm-=aCQ@mail.gmail.com>
[not found] ` <48EC4E8D43A28947B1AB2639FA97CDB90C0480BC@nasanexd02a.na.qualcomm.com>
[not found] ` <1938DD2280AE524AAB886A6036F7922A23476EE8@nasanexd02a.na.qualcomm.com>
[not found] ` <48EC4E8D43A28947B1AB2639FA97CDB90C0480E3@nasanexd02a.na.qualcomm.com>
[not found] ` <A61E02718FA45C4797F54E7EF4F2EC8F2384EFAF@nasanexd02a.na.qualcomm.com>
[not found] ` <48EC4E8D43A28947B1AB2639FA97CDB90C048ECC@nasanexd02a.na.qualcomm.com>
2012-11-09 21:34 ` [ath9k-devel] Fwd: FW: " Adrian Chadd
2012-11-11 5:02 ` Ali Abedi
2012-11-11 16:10 ` Adrian Chadd
2012-10-24 19:45 ` [ath9k-devel] ath9k_htc and reported mactime Thomas Pedersen
2012-10-24 19:45 ` Thomas Pedersen
2012-10-24 21:22 ` Adrian Chadd
2012-10-24 21:22 ` Adrian Chadd
2012-10-24 21:26 ` Adrian Chadd
2012-10-24 21:26 ` Adrian Chadd
2012-10-24 22:08 ` Thomas Pedersen
2012-10-24 22:08 ` Thomas Pedersen
2012-10-24 23:33 ` Adrian Chadd
2012-10-24 23:33 ` Adrian Chadd
2012-10-25 1:54 ` Adrian Chadd
2012-10-25 1:54 ` Adrian Chadd
2012-10-25 2:13 ` Adrian Chadd
2012-10-25 2:13 ` Adrian Chadd
2012-10-25 20:42 ` Adrian Chadd
2012-10-25 20:42 ` Adrian Chadd
2012-10-25 22:25 ` Thomas Pedersen
2012-10-25 22:25 ` Thomas Pedersen
2012-10-25 22:27 ` Adrian Chadd
2012-10-25 22:27 ` Adrian Chadd
2012-10-26 0:41 ` Thomas Pedersen
2012-10-26 0:41 ` Thomas Pedersen
2012-10-26 0:42 ` Adrian Chadd
2012-10-26 0:42 ` Adrian Chadd
2012-10-24 22:04 ` Thomas Pedersen
2012-10-24 22:04 ` Thomas Pedersen
[not found] <50D27A8B.9000209@mailservices.uwaterloo.ca>
2012-12-20 16:41 ` [ath9k-devel] Performance degradation when monitor interface is enabled Ali Abedi
2012-12-30 14:03 ` Mohammed Shafi
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