From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrej Podzimek Date: Sat, 18 Jul 2009 02:08:07 +0200 Subject: [ath9k-devel] Zyxel NWD-170n badly slow In-Reply-To: <1476eb2e0907171646y4777849fkc237119bd21afad2@mail.gmail.com> References: <4A60A0EF.5050601@podzimek.org> <43e72e890907170930u5205c1c0g50ee27cd119349c5@mail.gmail.com> <4A60B561.30205@podzimek.org> <43e72e890907171059kfec2366qf7d8d8b50f67d575@mail.gmail.com> <4A60E50C.5020000@podzimek.org> <43e72e890907171424i66afc975k9fc25687dacb383@mail.gmail.com> <4A610C5C.1040102@podzimek.org> <1476eb2e0907171646y4777849fkc237119bd21afad2@mail.gmail.com> Message-ID: <4A611267.7060801@podzimek.org> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: ath9k-devel@lists.ath9k.org > Regarding the Iperf issue of 1Mbps performance with UDP, try with "-b > 100Mbps" flag, as by default Iperf limits the sending rate to 1 MBps, so > use the bandwidth flag option to specify the sending rate. The option -b has no effect on my machine. I tried -b 100M, -b 500M, -b 100Mbps, -b 500Mbps and similar combinations, but it still shows the same result. [andrej at argos ~]$ iperf -Vu -b 100M -c <*** IPv6 address ***> WARNING: option -b is not valid for server mode ------------------------------------------------------------ Client connecting to <*** IPv6 address ***>, UDP port 5001 Sending 1470 byte datagrams UDP buffer size: 108 KByte (default) ------------------------------------------------------------ [ 3] local <*** IPv6 address ***> port 58878 connected with <*** IPv6 address ***> port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0-10.0 sec 1.25 MBytes 1.05 Mbits/sec [ 3] Sent 892 datagrams [ 3] WARNING: did not receive ack of last datagram after 10 tries. This is weird. I also tried -b 100X, which did not produce any error message and the result was almost identical to the above. My version of iperf is 2.0.4. Andrej