Lines Matching refs:adaptive

109 and such CPUs are said to be "adaptive-ticks CPUs".  This is important
119 By default, no CPU will be an adaptive-ticks CPU.  The "nohz_full="
120 boot parameter specifies the adaptive-ticks CPUs.  For example,
121 "nohz_full=1,6-8" says that CPUs 1, 6, 7, and 8 are to be adaptive-ticks
123 adaptive-tick CPUs:  At least one non-adaptive-tick CPU must remain
125 calls like gettimeofday() returns accurate values on adaptive-tick CPUs.
128 boot CPU is prohibited from entering adaptive-ticks mode.  Specifying a
135 that all CPUs other than the boot CPU are adaptive-ticks CPUs.  This
139 prevail so that only CPU 1 will be an adaptive-ticks CPU.
141 Finally, adaptive-ticks CPUs must have their RCU callbacks offloaded.
144 Normally, a CPU remains in adaptive-ticks mode as long as possible.
146 the mode.  Instead, the CPU will exit adaptive-ticks mode only if needed,
149 Just as with dyntick-idle mode, the benefits of adaptive-tick mode do
153 	adaptive ticks without also running dyntick idle.  This dependency
161 3.	POSIX CPU timers prevent CPUs from entering adaptive-tick mode.
170 	entering adaptive-tick mode.
172 5.	Scheduler statistics for adaptive-tick CPUs may be computed
173 	slightly differently than those for non-adaptive-tick CPUs.
176 6.	The LB_BIAS scheduler feature is disabled by adaptive ticks.
178 Although improvements are expected over time, adaptive ticks is quite
180 However, the drawbacks listed above mean that adaptive ticks should not
187 enter either dyntick-idle mode or adaptive-tick mode, the most
191 to enter dyntick-idle mode or adaptive-tick mode anyway.  In this case,
226 or adaptive-tick mode.  That said, note that it is up to userspace to
261 	some workloads will no doubt want to use adaptive ticks to
308 o	A reboot is required to reconfigure both adaptive idle and RCU
336 o	If there might potentially be some adaptive-ticks CPUs, there