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Diffstat (limited to '')
| -rw-r--r-- | cpukit/libmisc/cpuuse/README | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/cpukit/libmisc/cpuuse/README b/cpukit/libmisc/cpuuse/README index bd3cc55e34..ac674bb0b6 100644 --- a/cpukit/libmisc/cpuuse/README +++ b/cpukit/libmisc/cpuuse/README @@ -2,13 +2,20 @@ # $Id$ # -This directory contains a CPU usage reported. It provides two -primary features: +This directory contains code to report and reset per-task CPU usage. +If the BSP supports nanosecond timestamp granularity, this this information +is very accurate. Otherwise, it is dependendent on the tick granularity. - + provides an educated guess at each task's CPU usage +It provides two primary features: + + + Generate a CPU Usage Report + + Reset CPU Usage Information NOTES: -1. CPU usage is "docked" by a clock tick at each context switch. +1. If configured for tick granularity, CPU usage is "docked" by a + clock tick at each context switch. +2. If configured for nanosecond granularity, no work is done at each + clock tick. All bookkeeping is done as part of a context switch. |