Date: Tue, 18 Sep 2012 16:11:10 +0200 From: Johann Hugo <jhugo@meraka.csir.co.za> To: freebsd-wireless@freebsd.org Subject: Re: Heads up: AR7241 + PCIe and AR9287 on-board stuff works Message-ID: <201209181611.10751.jhugo@meraka.csir.co.za> In-Reply-To: <CAJ-VmokPc2qoV01S6MSX37Ua4uSvp9xd-gDm6cCznpd987Muzg@mail.gmail.com> References: <CAJ-VmonwVS_WOqT6FNN5adcAVvx%2B7n4f%2BbSeHXNE-5YcZBqw2w@mail.gmail.com> <CAJ-Vmokx7u-4MgkcS3tZiWvYE7RbqN9=rrjSe8%2B%2B3XnK_Jvw7w@mail.gmail.com> <CAJ-VmokPc2qoV01S6MSX37Ua4uSvp9xd-gDm6cCznpd987Muzg@mail.gmail.com>
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On Wednesday 05 September 2012 01:20:10 Adrian Chadd wrote: > On 28 August 2012 21:00, Adrian Chadd <adrian@freebsd.org> wrote: > > The default (most things as modules) kernel build is still ~ 3.5mb. > > That's rather large for a board with 16MB of RAM. > > > > Additionally, I can't load the ath device after the system has come up > > single user - the driver fails to allocate descriptors/buffer entries. > > I'll do some digging about it in a couple of weeks. I'd like some > > pointers on how to dump the current state of memory so I can see > > exactly what's going on. > > > > For reference, 'sysctl vm.vmtotal' shows the total free RAM is around > > 1 to 1.5MB. I'm guessing some are allocated to buffers but I'd like to > > see what else is actually holding onto memory.. > > It turns out memory fragmentation due to a huge (for embedded) > userland are to blame. > > I'll see if I can get ray@ to help me port phkmalloc to -HEAD again > and try to tweak the default allocator parameters to not pre-allocate > large pools for each process. > > Seeing login, sh, etc have an RSS of 1MB is kind of scary. > > I'll do some more digging with procstat (when I fit it into the > current image) and report back. > > There's also the problem of a 3.5MB "stripped down nothing but what's > needed to boot and read the rootfs from SPI flash + FFS" kernel size > problem. That seems slightly(!) too big.. Hi Adrian Did you manage make any progress with this ? I'm also seeing the same symptoms on our ARM boards. PID USERNAME THR PRI NICE SIZE RES STATE TIME WCPU COMMAND 45 root 1 40 0 10936K 10044K RUN 0:00 6.46% top 39 root 1 8 0 10416K 10080K wait 0:00 0.24% sh Johann
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