From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jacob Date: Sat, 18 Oct 2008 03:39:27 +0000 (UTC) Subject: [ath9k-devel] Issues with ar5418 Message-ID: List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: ath9k-devel@lists.ath9k.org I have been running the latest wireless-testing for about 24 hours and generally the card has been very stable. I've tested it with and without WPA/1. There are a few issues though, I also had the same issues with 2.6.27.1... 1) Whenever i run iperf, I get this many of these in the logs: ath_tx_prepare: TX queue: 1 is full, depth: 492 ath_tx_prepare: TX queue: 1 is full, depth: 492 2) There is a big difference in speed upstream and downstream throughout, the figures below are fairly constant: Client connecting to XX, TCP port 5001 TCP window size: 16.0 KByte (default) ------------------------------------------------------------ [ 5] local 192.168.0.97 port 40407 connected with 192.168.0.3 port 5001 [ 4] local 192.168.0.97 port 5001 connected with 192.168.0.3 port 41205 [ ID] Interval Transfer Bandwidth [ 5] 0.0-10.0 sec 27.0 MBytes 22.6 Mbits/sec [ 4] 0.0-12.3 sec 64.0 KBytes 42.8 Kbits/sec 3) If I run tcpdump the speeds drop considerably, below is a before and after running tcpdump -i wla0 ------------------------------------------------------------ [ 3] local 192.168.0.97 port 57664 connected with 192.168.0.3 port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0-10.0 sec 28.6 MBytes 23.9 Mbits/sec == after== ------------------------------------------------------------ Client connecting to isola, TCP port 5001 TCP window size: 16.0 KByte (default) ------------------------------------------------------------ [ 3] local 192.168.0.97 port 57665 connected with 192.168.0.3 port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0-12.1 sec 72.0 KBytes 48.9 Kbits/sec I also had this in my logs: tcpdump uses obsolete (PF_INET,SOCK_PACKET) I hope to try out 802.11n later this week. Cheers, Jacob -- 02:00.0 Network controller: Atheros Communications Inc. AR5418 802.11abgn Wireless PCI Express Adapter (rev 01) Subsystem: Apple Computer Inc. Device 0087 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- SERR- Kernel driver in use: ath9k Kernel modules: ath9k wlan0 IEEE 802.11abgn ESSID:"XX" Mode:Managed Frequency:2.412 GHz Access Point: 00:1C:B3:AE:F8:30 Bit Rate=0 kb/s Tx-Power=20 dBm Retry min limit:7 RTS thr:off Fragment thr=2352 B Power Management:off Link Quality=59/100 Signal level:-56 dBm Noise level=-94 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0