Date: Mon, 24 Jun 2019 15:33:39 -0600 From: Sergey Manucharian <sm@ara-ler.com> To: Oleksandr Tymoshenko <gonzo@bluezbox.com> Cc: freebsd-arm@freebsd.org Subject: Re: Writing to /dev/fb0 Message-ID: <20190624213339.GM2903@eldorado> In-Reply-To: <20190621193419.GG2903@eldorado> References: <CAFgkNAkVHccLg15aq9RY5CaT1qV=Bku2KpqOZiLjaNhJJF%2B8=A@mail.gmail.com> <20190621170845.GD2903@eldorado> <20190621171343.GE2903@eldorado> <CAFgkNAmw3cyhacK2RT2bHn=pNjRTE39o=bAR7aeuJPRb6W1dyQ@mail.gmail.com> <20190621190502.GA35692@bluezbox.com> <20190621193419.GG2903@eldorado>
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Excerpts from Sergey Manucharian's message from Fri 21-Jun-19 13:34: > Excerpts from Oleksandr Tymoshenko's message from Fri 21-Jun-19 12:05: > > You probably can convert this source file from my tslib branch to > > standalone app: > > > > https://github.com/gonzoua/tslib/blob/freebsd/tests/fbutils-bsd.c > > > I added "main" and it draws a red rectangle! > > int main (int argc, char** argv) > { > > open_framebuffer(); > setcolor (4, 0xff0000); > rect(100, 200, 200, 300, 4); > close_framebuffer(); > } As I already mentioned, these messages WARNING: Device driver fb has set "memattr" inconsistently (drv 0 pmap 3). flood console. So, the actual performance is very poor because of that, thus the framebuffer is practically unusable. The message comes from: sys/vm/device_pager.c I tried to understand the purpose of the corresponding commit: https://lists.freebsd.org/pipermail/svn-src-head/2016-May/085608.html https://reviews.freebsd.org/D6149 However, I don't understand how to eliminate that, how to deal with the "memattr". Disabling the message itself in "sys/vm/device_pager.c" significantly improves the performance. Would anybody advise please? Thanks, Ϟϻ
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