Linux

We are almost at the end of 2014. While 2014 has been a year with many mixed experiences, I think it does warrant one blog entry ;-) Recently, I’ve again started spending more time on Linux products / solutions, than spending time focused on a specfic subsystem. This change has been good. It has allowed me to re-cap all the advancements that have happened in the Linux world, umm… in the last 5 years. [Read More]

The power consumption on the Linux kernel 3.10 is pretty bad. On kernel 3.10, with the follwing config, the PowerTop results are: # # Timers subsystem # CONFIG_TICK_ONESHOT=y CONFIG_NO_HZ_COMMON=y # CONFIG_HZ_PERIODIC is not set CONFIG_NO_HZ_IDLE=y # CONFIG_NO_HZ_FULL is not set CONFIG_NO_HZ=y CONFIG_HIGH_RES_TIMERS=y PowerTOP v2.0 Overview Idle stats Frequency stats Device stats Tunables The battery reports a discharge rate of 28.0 W The estimated remaining time is 23 minutes Summary: 1785.5 wakeups/second, 0. [Read More]