On 13-03-16 6:16 AM, Insop Song wrote:
meta-realtime layer for testing sched_deadline and other real-time applications
Add rt-app, schedtool, define core-image-realtime, and append recipies-kernel
This looks good to me now, I still think we'll have some confusion
between the core "rt" images and core-image-realtime that we are
introducing here.
I may rename it core-image-realtime-extended as part of the merge,
if that's acceptable to you ? I think it will be something that
we'll need to revisit at some point, but that's not a good reason
to hold this back anymore.
I'll merge, do a quick test and push this out on Monday.
Cheers,
Bruce
*applications tested are shown below:
1. rt-app
- "rt-app" is a test application that starts multiple periodic threads
in order to simulate a real-time periodic load
- run example
root@qemux86:~# rt-app -t 100000:35000:d -D 1
[rt-app]<notice> [0] Using SCHED_DEADLINE policy:
[rt-app]<notice> [0] starting thread with period: 100000, exec:
35000,deadline: 100000, priority: 10
[rt-app]<notice> [0] Locking pages in memory
idx period min_et max_et rel_st start end
deadline dur. slack Budget Used Budget
0 100000 35000 35000 64705 305724113 305759126
305824105 35013 64979
...
0 100000 35000 35000 965099 306624507 306659526
306724105 35019 64578
[rt-app]<notice> [0] Exiting.
2. schedtool
- scheduler test tool
- run example
root@qemux86:~# schedtool -E -t 10000:100000 -a 0 -e yes> /dev/null&
root@qemux86:~# schedtool -E -t 30000:100000 -a 0 -e yes> /dev/null&
root@qemux86:~# jobs
[1]- Running schedtool -E -t 10000:100000 -a 0 -e yes
> /dev/null&
[2]+ Running schedtool -E -t 30000:100000 -a 0 -e yes
> /dev/null&
$ top
Mem: 33616K used, 84308K free, 0K shrd, 2684K buff, 13904K cached
CPU: 37% usr 5% sys 0% nic 56% idle 0% io 0% irq 0% sirq
Load average: 911.65 428.84 84.32 35501/62 715
PID PPID USER STAT VSZ %VSZ %CPU COMMAND
714 688 root R 2352 2% 28% yes
713 688 root R 2352 2% 9% yes
715 688 root R 2724 2% 4% top
Insop Song (1):
Add rt-app, schedtool, define core-image-realtime, and append
recipies-kernel
recipes-extended/images/core-image-realtime.bb | 12 +++++++++
recipes-kernel/linux/linux-yocto_3.8.bbappend | 9 +++++++
...adline-as-a-default-to-go-around-yocto-bu.patch | 26 ++++++++++++++++++
recipes-tools/rt-app/rt-app.bb | 28 ++++++++++++++++++++
recipes-tools/schedtool-dl/schedtool-dl.bb | 23 ++++++++++++++++
5 files changed, 98 insertions(+)
create mode 100644 recipes-extended/images/core-image-realtime.bb
create mode 100644 recipes-kernel/linux/linux-yocto_3.8.bbappend
create mode 100644
recipes-tools/rt-app/files/0001-set-with-deadline-as-a-default-to-go-around-yocto-bu.patch
create mode 100644 recipes-tools/rt-app/rt-app.bb
create mode 100644 recipes-tools/schedtool-dl/schedtool-dl.bb
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