Date: Sat, 23 Feb 2013 13:02:08 -0800 From: Adrian Chadd <adrian@freebsd.org> To: Sven Hazejager <sven@hazejager.nl> Cc: freebsd-wireless@freebsd.org Subject: Re: ath performance degradation between Oct-12 and now? Message-ID: <CAJ-VmomWgEZ6dTB__LVf_sJQwB8cGRF69b8rm%2BvWabwfYSwOww@mail.gmail.com> In-Reply-To: <CAKwdyT5_0LemLJBkdPEOjXg-d2-NF-3iCv4jCEjbPoffMT6P0g@mail.gmail.com> References: <CAKwdyT5_0LemLJBkdPEOjXg-d2-NF-3iCv4jCEjbPoffMT6P0g@mail.gmail.com>
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On 23 February 2013 12:16, Sven Hazejager <sven@hazejager.nl> wrote: > I have just upgraded my ALIX router (with an Atheros 9160) from > FreeBSD-HEAD r241243 (Oct 6, 2012) to r247155 (today) and I am > noticing slightly lower throughput rates. > > With iperf, sitting 1 meter from the router, I consistently get 79-81 > Mbits/sec TCP with r241243. This "drops" to 74-76 in r247155 (never > higher than 75.5 actually). The rates also seem to vary a bit more > (but that's hard to quantify). > > Anything I should be looking for? I'm more than happy to share debug > output etc. if instructed how to capture. Hi, The best thing to do is to test different kernel versions and see which change introduced the performance degradation. Unfortunately I can't discount the possibility that the issue is elsewhere in the kernel or compiler toolchain. Sorry :( Adrian
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