Attachment 72312 Details for Bug 58843 – gem_gtt_speed results, latest rc kernel & latest stable ddx

gem_gtt_speed results, latest rc kernel & latest stable ddx

gem_gtt_speed_results.txt (text/plain), 3.57 KB, created by Alexander Lam on 2012-12-30 20:49:52 UTC

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Creator: Alexander Lam

Created: 2012-12-30 20:49:52 UTC

Size: 3.57 KB

patch

obsolete

>Acer Aspire One (Intel Atom N270, 945 GSE, i686)
>kernel 3.8-rc1
>xf86-video-intel 2.20.17
>libdrm 2.4.40
>mesa 9.0.1
>xserver 1.13.1
>
>LVDS Downclocking enabled:
>[root@lamtop 0 0 tests]$ ./gem_gtt_speed 
>Time to read 16k through a CPU map:             123.742Âµs
>Time to write 16k through a CPU map:             73.699Âµs
>Time to clear 16k through a CPU map:             59.700Âµs
>Time to clear 16k through a cached CPU map:       1.417Âµs
>Time to pwrite 16k through the CPU:              79.910Âµs
>Time to pread 16k through the CPU:               41.149Âµs
>Time to read 16k through a GTT map:             814.364Âµs
>Time to write 16k through a GTT map:            122.917Âµs
>Time to clear 16k through a GTT map:             62.967Âµs
>Time to clear 16k through a cached GTT map:      42.385Âµs
>Time to read 16k (again) through a GTT map:     769.990Âµs
>Time to pwrite 16k through the GTT:              41.343Âµs
>Time to pread 16k through the GTT:               51.208Âµs
>Time to pwrite 16k through the GTT (clflush):    80.866Âµs
>Time to pread 16k through the GTT (clflush):     56.937Âµs
>Now partial writes.
>Time to pwrite 4k through the GTT (clflush):     50.945Âµs
>Time to pread 4k through the GTT (clflush):      48.360Âµs
>
>Setting tiling mode to X
>Time to read 16k through a GTT map:             800.716Âµs
>Time to write 16k through a GTT map:             60.374Âµs
>Time to clear 16k through a GTT map:             68.367Âµs
>Time to clear 16k through a cached GTT map:      38.627Âµs
>Time to read 16k (again) through a GTT map:     798.588Âµs
>
>Setting tiling mode to Y
>Time to read 16k through a GTT map:             820.807Âµs
>Time to write 16k through a GTT map:             81.033Âµs
>Time to clear 16k through a GTT map:             65.275Âµs
>Time to clear 16k through a cached GTT map:      40.555Âµs
>Time to read 16k (again) through a GTT map:     901.823Âµs
>
>
>*********************************************************
>LVDS Downclocking enabled:
>[root@lamtop 0 0 tests]$ ./gem_gtt_speed 
>Time to read 16k through a CPU map:              34.387Âµs
>Time to write 16k through a CPU map:             31.050Âµs
>Time to clear 16k through a CPU map:             19.059Âµs
>Time to clear 16k through a cached CPU map:       1.195Âµs
>Time to pwrite 16k through the CPU:              11.425Âµs
>Time to pread 16k through the CPU:               11.075Âµs
>Time to read 16k through a GTT map:             754.961Âµs
>Time to write 16k through a GTT map:             33.068Âµs
>Time to clear 16k through a GTT map:             25.763Âµs
>Time to clear 16k through a cached GTT map:       6.420Âµs
>Time to read 16k (again) through a GTT map:     756.845Âµs
>Time to pwrite 16k through the GTT:               9.400Âµs
>Time to pread 16k through the GTT:               22.195Âµs
>Time to pwrite 16k through the GTT (clflush):    10.170Âµs
>Time to pread 16k through the GTT (clflush):     23.178Âµs
>Now partial writes.
>Time to pwrite 4k through the GTT (clflush):      4.248Âµs
>Time to pread 4k through the GTT (clflush):       7.156Âµs
>
>Setting tiling mode to X
>Time to read 16k through a GTT map:             755.179Âµs
>Time to write 16k through a GTT map:             33.134Âµs
>Time to clear 16k through a GTT map:             25.639Âµs
>Time to clear 16k through a cached GTT map:       6.406Âµs
>Time to read 16k (again) through a GTT map:     754.988Âµs
>
>Setting tiling mode to Y
>Time to read 16k through a GTT map:             826.666Âµs
>Time to write 16k through a GTT map:             33.163Âµs
>Time to clear 16k through a GTT map:             29.155Âµs
>Time to clear 16k through a cached GTT map:      18.160Âµs
>Time to read 16k (again) through a GTT map:     826.913Âµs
>

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Attachments on bug 58843: 72230 | 72231 | 72232 | 72312 | 72313 | 72314 | 72315 | 72316 | 72317

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