|Reported by:||Martin Decky||Owned by:||Martin Decky|
|Blocker for:||Depends on:|
Description (last modified by )
The kernels of many operating systems have already switched or are planning to switch to tickless operation (i.e. avoiding strictly periodic timer interrupts and scheduling timers on-demand).
The benefits are lower overhead, better power-saving possibilities (even without any specific power management features) and a more natural design of the timers without a fixed timer period. The most significant drawback is naturally more complex timer bookkeeping, but as empirical evidence shows it is manageable.
Clarification: The term "tickless" is usually understood as a means to avoid periodic timer interrupts in idle states. However, an "event-driven" kernel design can actually go even further and avoid all periodic timer interrupts. See the following references in the context of Linux:
Change History (6)
comment:1 by , 11 years ago
|Summary:||Tickless kernel → Tickless/event-driven kernel|