Yesterday I did some tests how Zaurus C760 (ARM PXA255 at 400MHz) works with cpufreq enabled kernel (2.6.13-mm1). I have few frequences (100, 200, 300, 400MHz) and modes available:
- conservative (300MHz)
- ondemand (autoregulated from 100MHz to 400MHz)
- powersave (100MHz)
- userspace (let user set what he want)
- performance (400MHz)
OPIE sysinfo benchmarks results:
Test name |
100MHz |
200MHz |
300MHz |
400MHz |
400MHz 2.4 kernel |
Integer arithmetics (dhrys) |
115814 |
231669 |
348554 |
466092 |
450248 |
Floating point unit (seconds) |
15.50 |
6.42 |
3.72 |
2.77 |
3.11 |
Text rendering (chars/s) |
152 |
354 |
354 |
633 |
456 |
Gfx rendering (gops/s) |
311.17 |
753.58 |
860.25 |
1270.08 |
1441.00 |
RAM performance (MB/s) |
8.09, 4.68 |
22.22, 15.14 |
31.00, 18.13 |
48.83, 26.48 |
25.78, 16.17 |
CF card performance (MB/s, kb/s) |
16.77, 63.56 |
25.53, 70.73 |
30.76, 72.27 |
48.52, 77.46 |
not tested |
Notes:
Results are weird.. RAM performance under 2.4 kernel can be 26 MB/s in one test, 44 MB/s in other, 33 MB/s in another one. Gfx performance also jumps — 1440 in one attempt, 917 in another…
I cannot test CF card under 2.4 as I do not have pcmcia-cs
installed (using pcmciautils
under 2.6 kernel).