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Diffstat (limited to 'cpukit/libmisc/cpuuse/README')
| -rw-r--r-- | cpukit/libmisc/cpuuse/README | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/cpukit/libmisc/cpuuse/README b/cpukit/libmisc/cpuuse/README new file mode 100644 index 0000000000..ac674bb0b6 --- /dev/null +++ b/cpukit/libmisc/cpuuse/README @@ -0,0 +1,21 @@ +# +# $Id$ +# + +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. + +It provides two primary features: + + + Generate a CPU Usage Report + + Reset CPU Usage Information + +NOTES: + +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. + + |