Hi Paul, We noticed increased power consumption in our internal merge commit. It's not a direct evidence, however in the hope you can see any obvious clues. :) git://internal_merge_and_test_tree devel-hourly-2014062315 commit 7c66b15f8704703f6861faa246387342f7a05108 ("Merge 'rcu/rcu_cond_resched.2014.06.20c' into devel-hourly-2014062315") Merge sequence is: 7c66b15 Merge 'rcu/rcu_cond_resched.2014.06.20c' into devel-hourly-2014062315 db47b74 Merge 'ipvs-next/master' into devel-hourly-2014062315 ca8d737 Merge 'regulator/topic/ab8500' into devel-hourly-2014062315 aee9255 Merge 'renesas/devel' into devel-hourly-2014062315 af18816 Merge 'vireshk/tick/lowres-go-tickless' into devel-hourly-2014062315 3cf94bc1 Merge 'vireshk/tick/ONESHOT-STOPPED' into devel-hourly-2014062315 94ae897 Merge 'asoc/topic/tlv320aic32x4' into devel-hourly-2014062315 28ef1ff Merge 'tianyu/dep_support' into devel-hourly-2014062315 f04bc00 Merge 'robclark/msm-next' into devel-hourly-2014062315 03f1b1e Merge 'net/master' into devel-hourly-2014062315 a1a9b33 Merge 'spi/fix/qup' into devel-hourly-2014062315 45bf5db Merge 'renesas/next' into devel-hourly-2014062315 fb20fce Merge 'asoc/for-next' into devel-hourly-2014062315 a385be7 Merge 'asoc/topic/samsung' into devel-hourly-2014062315 1a9f804 0day base guard for 'devel-hourly-2014062315' a497c3b Linux 3.16-rc2 test case: brickland3/vm-scalability/300s-anon-rx-seq-mt db47b74b78e1623 7c66b15f8704703f6861faa24 --------------- ------------------------- 0.73 ~ 7% -13.4% 0.64 ~ 6% TOTAL turbostat.%c1 1499 ~ 5% +11.6% 1672 ~ 2% TOTAL slabinfo.sock_inode_cache.num_objs 1499 ~ 5% +11.6% 1672 ~ 2% TOTAL slabinfo.sock_inode_cache.active_objs 4.36 ~ 1% -8.1% 4.01 ~ 1% TOTAL turbostat.%c6 11782 ~ 1% +8.0% 12726 ~ 2% TOTAL time.involuntary_context_switches 2848 ~ 0% +4.8% 2983 ~ 0% TOTAL time.user_time 24.26 ~ 0% +4.4% 25.33 ~ 0% TOTAL time.elapsed_time 402 ~ 0% +2.0% 410 ~ 0% TOTAL turbostat.Cor_W 469 ~ 0% +1.8% 477 ~ 0% TOTAL turbostat.Pkg_W c8bb7487275a9b7 7c66b15f8704703f6861faa24 --------------- ------------------------- 2.047e+08 ~ 0% -5.2% 1.942e+08 ~ 0% TOTAL vm-scalability.throughput 58629 ~11% +25.1% 73348 ~13% TOTAL numa-numastat.node3.local_node 58670 ~11% +25.1% 73387 ~13% TOTAL numa-numastat.node3.numa_hit 41 ~ 6% -12.6% 36 ~ 1% TOTAL numa-numastat.node2.other_node 493777 ~ 2% -12.7% 431077 ~ 3% TOTAL proc-vmstat.pgfault 386476 ~ 1% -10.1% 347456 ~ 2% TOTAL proc-vmstat.pgalloc_normal 366616 ~ 2% -9.6% 331587 ~ 2% TOTAL proc-vmstat.numa_hit 366489 ~ 2% -9.6% 331475 ~ 2% TOTAL proc-vmstat.numa_local 11970 ~ 2% +6.3% 12726 ~ 2% TOTAL time.involuntary_context_switches 2829 ~ 0% +5.5% 2983 ~ 0% TOTAL time.user_time 24.02 ~ 0% +5.5% 25.33 ~ 0% TOTAL time.elapsed_time 402 ~ 0% +2.0% 410 ~ 0% TOTAL turbostat.Cor_W 469 ~ 0% +1.7% 477 ~ 0% TOTAL turbostat.Pkg_W Legend: ~XX% - stddev percent [+-]XX% - change percent time.user_time 3000 ++-------------------------------------------------------------------+ 2980 ++O O O O O O O O O O O O O | | O O O O O | 2960 O+ | 2940 ++ | | | 2920 ++ | 2900 ++ | 2880 ++ | | | 2860 ++ *. .*. .*. *. .*. | 2840 ++ + * *.* *. + *.* *. | *. .*.* *.*.*.*.*..*.*.*. .*.*.*.*.*.*.* *.* 2820 ++*.* * | 2800 ++-------------------------------------------------------------------+ time.elapsed_time 29 ++-------------------------------------------------------------------+ 28.5 O+ | | | 28 ++ | 27.5 ++ | 27 ++ | 26.5 ++ | | | 26 ++ | 25.5 ++O O O O O O O O O O O O O O O O O | 25 ++ O | 24.5 ++ | | .*. .*.*.*.*.*.*.*. .*.*.*.*.*. | 24 *+*.* * *.*.*.*.*..*.*.*.*.*.*.*.*.*.*.* *.* 23.5 ++-------------------------------------------------------------------+ vm-scalability.throughput 2.06e+08 ++*-*---------------------------------*--------------------------+ * + *.*.*.*.*.**.* *.*.*.*.*.*.* *.| 2.04e+08 ++ *.*. + + + * | **.*.*.*.*.* **.*.*.* | 2.02e+08 ++ | | | 2e+08 ++ | | | 1.98e+08 ++ | | | 1.96e+08 O+ | | O OO O | 1.94e+08 ++ O O O O O O O O O O O O OO | | | 1.92e+08 ++---------------------------------------------------------------+ [*] bisect-good sample [O] bisect-bad sample Disclaimer: Results have been estimated based on internal Intel analysis and are provided for informational purposes only. Any difference in system hardware or software design or configuration may affect actual performance. Thanks, Fengguang