The dynamic tick patch
Posted Jun 16, 2005 5:31 UTC (Thu) by HalfMoon
Parent article: The dynamic tick patch
Worth noting: the i386 implementation was preceded by
one for the OMAP processors ... ARM based system-on-chip
processors you may well have in your cell phones, with
some serious hardware support for power reduction.
You know, where shaving a few milliWatts power here and
there start to add up to more hours of battery life,
getting you into that sixth day of unplugged operation...
Unlike PCs these are designed with the expectation that
parts of the system will go to sleep while others are
So putting the CPU to sleep may mean notable savings
depending on how deeply it sleeps, and yet the whole
system could still be streaming DMA through audio.
Wasting power on waking up the CPU even just a hundred
times per second (default HZ on ARM) would be bad.
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