https://bugzilla.kernel.org/show_bug.cgi?id=30712 --- Comment #3 from justincase@xxxxxxxxxxx 2011-03-24 17:30:10 --- > For theoretical worst case performance losses for your HW you can also use > cpufreq-bench from the cpufrequtils package. Did it. Using the provided config file (example.cfg, but with high prio): sleep = 50000 load = 50000 cpu = 0 priority = high output = /var/log/cpufreq-bench sleep_step = 50000 load_step = 50000 cycles = 20 rounds = 40 verbose = 0 governor = ondemand I got the following results: #round load sleep performance powersave percentage 0 50000 50000 51231 72195 70.962 1 100000 100000 99372 131896 75.341 2 150000 150000 150344 207348 72.508 3 200000 200000 201254 252881 79.585 4 250000 250000 252787 314064 80.489 5 300000 300000 289421 384662 75.241 6 350000 350000 349900 444644 78.692 7 400000 400000 398016 500908 79.459 8 450000 450000 441566 559675 78.897 9 500000 500000 475505 596761 79.681 10 550000 550000 543846 679182 80.074 11 600000 600000 588735 736504 79.936 12 650000 650000 649588 805318 80.662 13 700000 700000 687249 828287 82.972 14 750000 750000 744053 910069 81.758 15 800000 800000 784194 949034 82.631 16 850000 850000 837451 1000410 83.711 17 900000 900000 895482 1060572 84.434 18 950000 950000 942109 1120819 84.055 19 1000000 1000000 988791 1177261 83.991 20 1050000 1050000 1035069 1219008 84.911 21 1100000 1100000 1090936 1290393 84.543 22 1150000 1150000 1116174 1322882 84.374 23 1200000 1200000 1182898 1384354 85.448 24 1250000 1250000 1245290 1461707 85.194 25 1300000 1300000 1279248 1504184 85.046 26 1350000 1350000 1334856 1568016 85.130 27 1400000 1400000 1359270 1619033 83.956 28 1450000 1450000 1427805 1696784 84.148 29 1500000 1500000 1476888 1743625 84.702 30 1550000 1550000 1527646 1798479 84.941 31 1600000 1600000 1571870 1851467 84.899 32 1650000 1650000 1622833 1900892 85.372 33 1700000 1700000 1677034 1956607 85.711 34 1750000 1750000 1723148 2010195 85.720 35 1800000 1800000 1774814 2064853 85.954 36 1850000 1850000 1823337 2137830 85.289 37 1900000 1900000 1873975 2184400 85.789 38 1950000 1950000 1937433 2296903 84.350 39 2000000 2000000 1965560 2282347 86.120 Not so good, right? Even in the end with the 2 seconds workload... -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. -- To unsubscribe from this list: send the line "unsubscribe cpufreq" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
