Displaying 2 results from an estimated 2 matches for "90us".
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90s
2013 Jan 20
1
[PATCH] nouveau: put cursor BO in GART
Keeping it in VRAM wastes CPU time, because cursor_set ioctl reads
handed BO back to RAM, just to write it to actual cursor BO.
Here (nv92/core i7), this patch decreases overall cpu usage of
drmmode_load_cursor_argb from 4.6ms to ~90us and lets nv50_crtc_cursor_set
disappear from perf traces.
---
I considered accelerating kernel-side copying with GPU, but it turns out that:
- it's slower (120-150us), with frequent bursts (up to 5ms)
- not applicable to <nv50 hw, which needs to transform cursor data
Putting cursor BO in GA...
2008 Jun 30
4
Rebuild of kernel 2.6.9-67.0.20.EL failure
Hello list.
I'm trying to rebuild the 2.6.9.67.0.20.EL kernel, but it fails even without
modifications.
How did I try it?
Created a (non-root) build environment (not a mock )
Installed the kernel.scr.rpm and did a
rpmbuild -ba --target=`uname -m` kernel-2.6.spec 2> prep-err.log | tee
prep-out.log
The build failed at the end:
Processing files: kernel-xenU-devel-2.6.9-67.0.20.EL
Checking