On Mon, Jul 7, 2014 at 11:31 AM, Adrian Chadd <adr...@freebsd.org> wrote: > On 7 July 2014 11:28, John Hay <j...@meraka.org.za> wrote: >> On Mon, Jul 07, 2014 at 11:22:46AM -0700, Adrian Chadd wrote: >>> On 7 July 2014 10:12, Ian Lepore <i...@freebsd.org> wrote: >>> > On Mon, 2014-07-07 at 09:25 -0700, Adrian Chadd wrote: >>> >> hi, >>> >> >>> >> That call is returning ENOMEM. I'm not sure why. It allocated an mbuf >>> >> fine, but it couldn't allocate the DMA map. >>> >> >>> >> What's the output of "vmstat -z" ? I wonder if it's failing an >>> >> allocation. >>> >> >>> >> >>> >> >>> >> -a >>> > >>> > Lack of bounce buffers is a posibility that won't show up in vmstat >>> > output. >>> >>> right, but there's a bunch of already failing vmstat entries. >>> >>> >>> John - there's a vmscale parameter somewhere. Hiren had to drop it >>> down for his APs to work in 64MB of RAM. I think it's >>> vm.kmem_size_scale . What's it say for you? >>> >> >> :~ # sysctl vm.kmem_size_scale >> vm.kmem_size_scale: 3 > > Ok. Search the archives for an email from Hiren titled "mbuf autotuning > effect". > > TL;DR - set it to 1 and recompile. There's a kernel option somewhere > to do exactly that.
Yes. http://lists.freebsd.org/pipermail/freebsd-mips/2013-September/003081.html I went through this for my tplink. John, can you show o/p of: sysctl -a | grep hw | grep mem and sysctl -a | grep maxmbuf Cheers, Hiren _______________________________________________ freebsd-wireless@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-wireless To unsubscribe, send any mail to "freebsd-wireless-unsubscr...@freebsd.org"
