Messages in this thread | | | Date | Tue, 25 Feb 2003 22:14:29 -0800 | From | "Martin J. Bligh" <> | Subject | Re: [PATCH 2.5.62-mm3] objrmap fix for X |
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>>> Keep the flag for now, find the escaped page under X, remove the flag >>> later? >> >> It occurred to me I'm already using (abusing?) the flag for nonlinear >> pages, so I have to keep it. I'll chase solutions for X. > > Ok, the vm_ops->nopage function is set in drivers like drm and agp. I > don't think it's reasonable to require all of them to set PageAnon. So > here's a patch that tests the page on do_no_page and sets the flag > appropriately.
Well, it runs fine, but I get truly freaky performance results. My machine might have gone wacko on me or something - the patch seems perfectly simple to me. Kernbench is all over the map - user and elapsed way up, system is down. Ummm .. probably all too strange to be true, and I've made a mistake, but if some more sane person than I could run a quick test, would help.
Thanks,
M.
Kernbench-2: (make -j N vmlinux, where N = 2 x num_cpus) Elapsed User System CPU 2.5.62-mjb3 43.92 557.65 94.12 1483.50 test 68.61 923.78 90.19 1477.33
Kernbench-16: (make -j N vmlinux, where N = 16 x num_cpus) Elapsed User System CPU 2.5.62-mjb3 45.21 560.46 114.58 1492.67 test 69.04 927.20 100.56 1488.17
DISCLAIMER: SPEC(tm) and the benchmark name SDET(tm) are registered trademarks of the Standard Performance Evaluation Corporation. This benchmarking was performed for research purposes only, and the run results are non-compliant and not-comparable with any published results.
Results are shown as percentages of the first set displayed
SDET 1 (see disclaimer) Throughput Std. Dev 2.5.62-mjb3 100.0% 3.1% test 83.9% 1.7%
SDET 2 (see disclaimer) Throughput Std. Dev 2.5.62-mjb3 100.0% 4.0% test 87.0% 3.8%
SDET 4 (see disclaimer) Throughput Std. Dev 2.5.62-mjb3 100.0% 2.0% test 90.3% 2.1%
SDET 8 (see disclaimer) Throughput Std. Dev 2.5.62-mjb3 100.0% 4.6% test 95.6% 6.3%
SDET 16 (see disclaimer) Throughput Std. Dev 2.5.62-mjb3 100.0% 2.7% test 103.0% 3.4%
SDET 32 (see disclaimer) Throughput Std. Dev 2.5.62-mjb3 100.0% 0.9% test 96.6% 1.0%
SDET 64 (see disclaimer) Throughput Std. Dev 2.5.62-mjb3 100.0% 1.1% test 94.8% 0.6%
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