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rhilatency.adoc @ 8fbe2e6

4.115

Last change on this file since 8fbe2e6 was b6c1578, checked in by Joel Sherrill <joel.sherrill@…>, on 01/05/14 at 17:17:08

rhealstone: Add rh prefix to all test names

This makes them easier to spot as a group in wildcard searches.

File size: 806 bytes

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1	= Interrupt Latency Benchmark
2
3	This benchmark measures the time between the CPU's receipt of an interrupt
4	request and the execution of the first intruction in that interrupt service
5	routine.
6
7	== Directives
8
9	* Intall_tm27_vector
10	* Cause_tm27_intr
11
12
13	== Methodology
14
15	This benchmark takes advantage of the existing tm27 test support implemented
16	by most BSP's to achieve as much hardware independence as possible. Most BSPs
17	have an instruction to install an interrupt vector, and then provide code for
18	the ISR. rtems/testsuites/tmtests/tm27 uses this to test a variety of interrupt
19	related concepts. The benchmark is simple, the vector is installed, the time
20	is started, the interrupt is caused, and the time is ended in the first
21	instruction of the ISR. This is the only Rhealstone that is not an average.

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