Date: Fri, 7 Dec 2012 22:33:38 -0800 From: Adrian Chadd <adrian@freebsd.org> To: Alfred Perlstein <bright@mu.org> Cc: Alfred Perlstein <alfred@freebsd.org>, Andre Oppermann <andre@freebsd.org>, freebsd-arch@freebsd.org Subject: Re: svn commit: r243594 - head/sys/netinet Message-ID: <CAJ-VmomXyB7MgcWfusb7UH-RG%2BDBZaS_LVRiqKoYRcvmU9s%2BbQ@mail.gmail.com> In-Reply-To: <50C2839B.30709@mu.org> References: <201211270304.qAR34PfD056691@svn.freebsd.org> <50B53ABC.1010304@freebsd.org> <50B57F46.1060207@mu.org> <50C205DC.1040701@freebsd.org> <AC499CCF-3812-4CA9-929C-05AA4C39F223@mu.org> <50C23B5E.3020509@freebsd.org> <50C26BF9.1050106@mu.org> <CAJ-Vmo=okfoDzUSBJ%2B1=iq44EaNw_uOWCOTB-7TVU6%2BdFZeFyA@mail.gmail.com> <50C278B0.3040107@mu.org> <52564974-563C-499F-9860-ADACA0DD22CE@bsdimp.com> <CAJ-VmokjzMxpY0hpxGLq4_yy3tU29JcCTZi8PChn8t7hmbcn8Q@mail.gmail.com> <50C2839B.30709@mu.org>
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I suggest something with some numbers/figures that we can look at and plot. Specifically: * Let's map out what the inputs are (eg total memory, total VM space) * Let's map out what the outputs are (eg UMA zone sizing, total mbufs allowed, etc) * Let's plot what the current, pre-latest-fiddling-in-current code does; * Let's plot what you and Andre think it should be, and then we can see how that works on the RAM constrained platforms; * Let's have a bit of a chat about it. Until Oleksandr and Andre figure out exactly why Andre's tweaks have broken memory allocation on ARM (and until he and I stare at MIPS a bit more, especially on the RAM constrained AP platforms) we can only guess what the underlying reasons for his issues are. Oleksandr thinks "fragmentation", but we just don't know. So that's worth figuring out. You don't have to wait. There's plenty to do. Heck, I wonder what platform Oleksandr is using where an ARM board has 1GB of RAM. Maybe we should get some more of those for people to play with. Adrian
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