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KernelTrap: High-Res Timers and Tickless Kernel

Jun 24, 2006, 11:00 (0 Talkback[s])

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"Thomas Gleixner and Ingo Molnar posted an update of their high-res timers kernel patches for the 2.6.17 kernel, 'upon which we based a tickless kernel (dyntick) implementation and a 'dynamic HZ' feature as well.' The patch currently works for x86, with ports to x86_64, PPC and ARM in the works. Thomas explains, 'the high-res timers feature (CONFIG_HIGH_RES_TIMERS) enables POSIX timers and nanosleep() to be as accurate as the hardware allows (around 1usec on typical hardware). This feature is transparent--if enabled it just makes these timers much more accurate than the current HZ resolution...'"

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