Date: Mon, 8 Sep 2014 10:41:34 -0700 From: Mark Millard <markmi@dsl-only.net> To: freebsd-ppc@freebsd.org Subject: Re: Just FYI: GeForce 7800 GT on a PowerMac Quad-core G5 with a 2560x1440 display: [mi] EQ overflowing Message-ID: <C7B02203-62B9-46F1-A806-4981D7F8BC0A@dsl-only.net> In-Reply-To: <508DA417-7E82-4E4B-B1F4-8A0309F5227A@dsl-only.net> References: <508DA417-7E82-4E4B-B1F4-8A0309F5227A@dsl-only.net>
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On Mon Sep 8 12:41:12 UTC 2014 Jukka Ukkonen wrote: > This may be a more generic problem and not really related to PowerPC=20= > environments > only. I have seen similar mi-complaints on a 12 core AMD64 system with = a=20 > Radeon GPU > running 10-stable. > These problems have only occurred after the introduction of = VT-consoles=20 > and KMS enabled > X11. The powerpc context that I reported on is still using scons and there is = no NVIDIA KMS to my knowledge, much less a powerpc one spanning NVIDIA = if I understand right. So I'd guess that even if the time frame is similar for when you = observed behavior changes that the actual issue is not VT nor KMS of = themselves. If any more general/generic changes were also made that = would span scons and NVIDIA then such could contribute. But the same kind of NVIDIA card used on the same kind of PowerMac G5 = with a 1920x1200 display does not generate those notices for the same = SSD being used to boot. The notices that I reported seem to be tied to = the card having more pixels to deal with (2560x1440), at least for the = context I reported about. I have no evidence of it being tied to = anything else but I've not tested an older context recently and do not = remember the details from my prior use. (I had reasons to be testing = basic Xorg/xfce4 display behavior recently and so noticed various = notifications more than usual.) I could imagine internal display-handling configuration tradeoffs in = Xorg based on the number of pixels the display has. May be the 2560x1440 = is just more extreme than the management of the display handling is = designed to well span. All guess work on my part. =3D=3D=3D Mark Millard markmi at dsl-only.net On Sep 8, 2014, at 1:47 AM, Mark Millard <markmi@dsl-only.net> wrote: FYI: The GeForce 7800 GT on a PowerMac Quad-core G5 with a 2560x1440 = display (ADC with converter to DVI) reports the following [mi] EQ overflowing. Additional events will be discarded until existing = events are processed. [mi] These backtraces from mieqEnqueue may point to a culprit higher up = the stack. [mi] mieq is *NOT* the cause. It is a victim. [mi] Increasing EQ size to 512 to prevent dropped events. [mi] EQ processing has resumed after 51 dropped events. [mi] This may be caused my a misbehaving driver monopolizing the = server's resources. Context: I built a 10.1-PRERELEASE r271215 (to test Justin Hibbits' changes for = powerpc). I also used portsnap and then rebuilt my ports from scratch. FreeBSD FBSDG4S0 10.1-PRERELEASE FreeBSD 10.1-PRERELEASE #0 r271215: Sat = Sep 6 23:56:15 PDT 2014 root@FBSDG4S0:/usr/obj/usr/src/sys/GENERIC = powerpc (I'd be surprised if this was powerpc or PowerMac specific. But use of = these old cards may be more likely for PCI-Express PowerMacs.) =3D=3D=3D Mark Millard markmi at dsl-only.net
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