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2008-12-18 Sebastian Huber <sebastian.huber@embedded-brains.de>

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* user/cpuuse.t: Reflect change in CPU Usage report format.
This commit is contained in:
Joel Sherrill
2008-12-18 15:26:09 +00:00
parent e41eaa881a
commit 8fbb48a68a
2 changed files with 18 additions and 11 deletions
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doc/ChangeLog
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@@ -1,3 +1,7 @@
2008-12-18 Sebastian Huber <sebastian.huber@embedded-brains.de>
* user/cpuuse.t: Reflect change in CPU Usage report format.
2008-12-15 Joel Sherrill <joel.sherrill@oarcorp.com> 2008-12-15 Joel Sherrill <joel.sherrill@oarcorp.com>
* user/init.t: Eliminate pointers to API configuration tables in the * user/init.t: Eliminate pointers to API configuration tables in the

25
doc/user/cpuuse.t
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@@ -61,20 +61,23 @@ The following is an example of the report generated:
@example @example
@group @group
CPU Usage by thread -------------------------------------------------------------------------------
ID NAME TICKS PERCENT CPU USAGE BY THREAD
0x04010001 IDLE 0 0.000 ------------+----------------------------------------+---------------+---------
0x08010002 TA1 1203 0.748 ID | NAME | SECONDS | PERCENT
0x08010003 TA2 203 0.126 ------------+----------------------------------------+---------------+---------
0x08010004 TA3 202 0.126 0x04010001 | IDLE | 0 | 0.000
0x08010002 | TA1 | 1203 | 0.748
Ticks since last reset = 1600 0x08010003 | TA2 | 203 | 0.126
0x08010004 | TA3 | 202 | 0.126
Total Units = 1608 ------------+----------------------------------------+---------------+---------
TICKS SINCE LAST SYSTEM RESET: 1600
TOTAL UNITS: 1608
-------------------------------------------------------------------------------
@end group @end group
@end example @end example
Notice that the "Total Units" is greater than the ticks per reset. Notice that the "TOTAL UNITS" is greater than the ticks per reset.
This is an artifact of the way in which RTEMS keeps track of CPU This is an artifact of the way in which RTEMS keeps track of CPU
usage. When a task is context switched into the CPU, the number usage. When a task is context switched into the CPU, the number
of clock ticks it has executed is incremented. While the task of clock ticks it has executed is incremented. While the task