SPDX-License-Identifier: CC-BY-SA-4.0 OR BSD-2-Clause
copyrights:
- Copyright (C) 2021 embedded brains GmbH & Co. KG
enabled-by: RTEMS_SMP
links:
- role: requirement-refinement
uid: perf-runtime
- role: runtime-measurement-request
uid: ../val/perf
non-functional-type: performance-runtime
params: {}
rationale: null
references: []
requirement-type: non-functional
test-body:
brief: |
Move the worker to scheduler A.
code: |
ctx->begin = T_tick();
ctx->status = rtems_task_set_scheduler(
ctx->worker_id,
SCHEDULER_A_ID,
PRIO_HIGH
);
description: null
test-cleanup:
brief: |
Delete the worker tasks.
code: |
ResumeTask( ctx->worker_2_id );
DeleteTask( ctx->worker_2_id );
DeleteTask( ctx->worker_id );
description: null
test-prepare:
brief: |
Create and start two worker tasks for scheduler B. Make the second worker
busy.
code: |
ctx->worker_id = CreateTask( "WORK", PRIO_NORMAL );
SetScheduler( ctx->worker_id, SCHEDULER_B_ID, PRIO_NORMAL );
StartTask( ctx->worker_id, Worker, ctx );
Send( ctx, EVENT_SET_END );
WaitForNextTask( 1, ctx->worker_id );
ctx->worker_2_id = CreateTask( "WRK2", PRIO_NORMAL );
SetScheduler( ctx->worker_2_id, SCHEDULER_B_ID, PRIO_HIGH );
StartTask( ctx->worker_2_id, Worker, ctx );
SendEvents( ctx->worker_2_id, EVENT_BUSY );
SuspendTask( ctx->worker_2_id );
description: null
test-setup:
brief: |
Move the worker to scheduler B. Make the worker ready to set the end time.
code: |
ResumeTask( ctx->worker_2_id );
SetScheduler( ctx->worker_id, SCHEDULER_B_ID, PRIO_NORMAL );
Send( ctx, EVENT_SET_END );
description: null
test-teardown:
brief: |
Set the measured runtime. Discard samples interrupted by a clock tick.
code: |
T_quiet_rsc_success( ctx->status );
*delta = ctx->end - ctx->begin;
SuspendTask( ctx->worker_2_id );
return tic == toc;
description: null
text: |
Let U and V be two tasks with the distinct home schedulers. Let
:math:`B` be a time point measured by U right before a call to
${../if/set-scheduler:/name} which moves task V to the home scheduler of
U which preempts the caller. Let :math:`E` be a time point measured by
V right after the first context switch after :math:`B`.
While the execution environment is ${.:/environment}, while the measurement
sample is :math:`E - B`, when exactly ${../val/perf:/params/sample-count}
samples are collected, the ${.:/limit-kind} shall be ${.:/limit-condition}.
type: requirement
