Re: i7 working for rtai-5.0-test1.tar.bz2

I made my own version of application, that writes  to 125 MB of RAM
continuously and ran a few instances of the same application, 'ps aux'
showed full CPU usage. 
I'll follow your suggestion for loading OS using ping, not sure what you
meant for "keept making the kernel and cleaning it"?

Thanks,
Hasan
-----Original Message-----
From: Paolo Mantegazza [mailto:[email protected]] 
Sent: March-08-16 3:27 PM
To: Hasan Jamal; [email protected]
Subject: RE: [Rtai] i7 working for rtai-5.0-test1.tar.bz2

How long did the test last? There was intense Linux load?
Take into account that you should test for a hour or twq, at least. To
create a somewhat intense Linux load in run "ping -f somewher" and keept
making the kernel and cleaning it.
Then report the final rows of the latency test.
Paolo
________________________________________
From: Hasan Jamal [[email protected]]
Sent: Tuesday, March 8, 2016 8:56 PM
To: Paolo Mantegazza; [email protected]
Subject: RE: [Rtai] i7 working for rtai-5.0-test1.tar.bz2

> BTW, have you disabled CPU frequency scaling (CPU throttling) 
> BIOS/Linux
config?
No, I did not but built with disabled CPU frequency scaling does same.

Following is the result after overnight test with no load but default
services running.

RTH|    lat min|    ovl min|    lat avg|    lat max|    ovl max|   overruns
RTD|       1304|          0|       1815|       3118|      43940|          7
RTD|        974|          0|       1823|       3900|      43940|          7

If I stop and start 'run' then overruns changes but the number does not
change over time, it seems that is somehow locked.

Following is the output with intense load (disabled CPU frequency scaling),
again overrun number don't change from start.

RTH|    lat min|    ovl min|    lat avg|    lat max|    ovl max|   overruns
RTD|        267|          0|        321|       1195|       7753|         10
RTD|        267|          0|        322|       1166|       7753|         10

May I accept this result as good? Or some bugs are in RTAI?

Thanks,
Hasan

-----Original Message-----
From: Paolo Mantegazza [mailto:[email protected]]
Sent: March-07-16 6:06 PM
To: Hasan Jamal; [email protected]
Subject: RE: [Rtai] i7 working for rtai-5.0-test1.tar.bz2

It means that there have been 7 cycles that missed the deadline. Somewhat
strange, since latency has aperiod of 100000 ns, which is not overtaken by a
max overall latency of 32043 ns.
Let it run longer, under intense Linux load, and see what happens.
BTW, have you disabled CPU frequency scaling (CPU throttling) BIOS/Linux
config?
Paolo.
________________________________________
From: Rtai [[email protected]] on behalf of Hasan Jamal
[[email protected]]
Sent: Monday, March 7, 2016 11:47 PM
To: [email protected]
Subject: [Rtai] i7 working for rtai-5.0-test1.tar.bz2

I've got  latest RTAI5.0 working Linux-3.18.22. I'm wondering about overruns
in latency test, are they normal?

RTD|       1339|          0|       1837|       7611|      32043|          7
RTD|        979|          0|       1818|       5484|      32043|          7
RTH|    lat min|    ovl min|    lat avg|    lat max|    ovl max|   overruns
RTD|       1414|          0|       1839|       2742|      32043|          7
RTD|        979|          0|       1819|      27438|      32043|          7
RTD|       1780|          0|       1824|      10873|      32043|          7
RTD|        974|          0|       1807|      11571|      32043|          7
RTD|       1570|          0|       1842|      10585|      32043|          7
RTD|        979|          0|       1835|      22838|      32043|          7
RTD|       1730|          0|       1814|       2773|      32043|          7
RTD|        984|          0|       1830|      16463|      32043|          7
RTD|       1720|          0|       1835|      11337|      32043|          7
RTD|        984|          0|       1822|      21159|      32043|          7




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