On Mon, 22 Nov 2010 10:58:48 +0000, Simon Farnsworth <[email protected]> wrote: > On Monday 22 November 2010, Chris Wilson <[email protected]> wrote: > > The usual perf cpu profiling and latency charts would be interesting. > > > The reason for moving to new bits is perf and sysprof telling me that I'm > probably out of CPU (one hyperthread fully utilised, the other always in use > to some extent). > > What perf profiling and latency charts are interesting? I've been using > sysprof > to try and get myself below 100% CPU, but I'd love to add more tools to my > toolbox.
In theory, we should be able to gather quite a bit of interesting information for analysing deadlines from using perf timechart in conjunction with i915:i915_gem_request_wait_begin, i915:i915_flip_request, i915:i915_flip_complete. Just needs a lot more effort for useful analysis. > Argh. Noticed that I misspoke - I am using DVI, not VGA right now (enables me > to eliminate monitor effects when trying to spot whether missed deadlines are > visible to the user). > > It's not cloning to 1280 pixels - it's compressing what looks like the full > 1680 pixels into a band about 500 pixels wide. I can try and take a photo if > it would help. I think a clearer picture is forming in mind. Just a complete modesetting screwup. > xrandr --output VGA1 --off --output DVI1 --preferred doesn't change things. Right looks like the other pipe is just residual values from probing for a TV. Mind also grabbing a drm.debug=0xe from a sane startup. Aside from a silliness with attempting to use a HDMI command on a non-HDMI capable connector, there was nothing outlandish in that dmesg that I could spot. Hmm, I'll send a patch for that at least. -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ Intel-gfx mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/intel-gfx
