[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Priority Aging and RT

This page is part of the web mail archives of SRFI 18 from before July 7th, 2015. The new archives for SRFI 18 contain all messages, not just those from before July 7th, 2015.

> One of the discussion items is the issue of priority aging. While I do
> not object to it, I suggest that it not be included as a specified
> part of SRFI-18 on the basis that priority aging conflicts with hard
> RT and hence would preclude a RT-SRFI. Or at the very least, priority
> aging should be a thread specific (rather than global) option that can
> be ignored in RT systems.

Priority decay, as is done in QNX, could be obtained on a thread by
thread basis by adding a "decay" field to threads.  It would specify
the amount of priority decay to apply if the thread reaches its quantum.
Setting the decay to 0 would cancel the effect.