test of sched-deadline

[macdi]

Hi Yuri,

I installed Linux-3.14.0-rc4 and I tried to test sched-deadline using schedtool as follow:

$> sudo ./schedtool -E -t 20000:100000:100000 -e yes

This results in this error:

Dumping mode: 0xa
Dumping affinity: 0x0
We have 1 args to do
Dump arg 0: yes
setting PID 2224 to policy E: SCHED_DEADLINE, prio 0, runtime 20000, period 100000
ERROR: could not set PID 2224 to E: SCHED_DEADLINE - value out of range / policy not implemented

After looking at the schedtool source code, I found that sched-setattr(pid, p) returns -1.

Also I tried SCHED_FIFO, but I get a similar error:

$> ./schedtool -v -F -p 50 -e yes

Dumping mode: 0xb
Dumping affinity: 0x0
We have 1 args to do
Dump arg 0: yes
setting PID 2693 to policy F: SCHED_FIFO, prio 50, runtime 0, period 0
policy = 1 ret = -1
ERROR: could not set PID 2693 to F: SCHED_FIFO - value out of range / policy not implemented

Could you please tell me what is wrong with my installation.

Thank u very much in advance.

Best regards,
Mehdi

[jlelli]

Hi Mehdi,

schedtool-dl is not yet updated to the very last changes to the ABI.
Let me fix it in the next few days.

Thanks,

• Juri

On Wed, 26 Feb 2014 09:58:30 -0800
macdi [email protected] wrote:

Hi Yuri,

I installed Linux-3.14.0-rc4 and I tried to test sched-deadline using schedtool as follow:

$> sudo ./schedtool -E -t 20000:100000:100000 -e yes

This results in this error:

Dumping mode: 0xa
Dumping affinity: 0x0
We have 1 args to do
Dump arg 0: yes
setting PID 2224 to policy E: SCHED_DEADLINE, prio 0, runtime 20000, period 100000
ERROR: could not set PID 2224 to E: SCHED_DEADLINE - value out of range / policy not implemented

After looking at the schedtool source code, I found that sched-setattr(pid, p) returns -1.

Also I tried SCHED_FIFO, but I get a similar error:

$> ./schedtool -v -F -p 50 -e yes

Dumping mode: 0xb
Dumping affinity: 0x0
We have 1 args to do
Dump arg 0: yes
setting PID 2693 to policy F: SCHED_FIFO, prio 50, runtime 0, period 0
policy = 1 ret = -1
ERROR: could not set PID 2693 to F: SCHED_FIFO - value out of range / policy not implemented

Could you please tell me what is wrong with my installation.

Thank u very much in advance.

Best regards,
Mehdi

---

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#9

[jlelli]

Hi,
try it now :).

Best,

• Juri

[macdi]

Hi Yuri,

I cloned the repository and I tried it, but I still have the same error.

This is the results of "git log" command:

~/dev/schedtool-dl$ git log

commit 834a0da49b1e1342d8724f590af67f7e6c7135f4
Author: Juri Lelli
Date: Fri Jan 17 17:17:44 2014 +0100

adapt to tip/master ABI

commit 8b39f4654b871786d66835dbc607bbe9a684f466
Author: Juri Lelli
Date: Thu Jan 16 17:48:57 2014 +0100

use sizeof instead of a define value

commit fb9c8c82254ad420e4582abdeed2b6dbf693edfa
Author: Juri Lelli
Date: Tue Dec 3 17:37:44 2013 +0100

New ABI

commit cd4e3f2f5a33c3266e25e447e8efbacb3b8c88da
Author: Juri Lelli
Date: Wed Feb 6 12:12:58 2013 -0800

syscall_magic: syscall numbers for V7

commit 96acd38aede7ca3852a86701a45b06a248f324d0
Author: Juri Lelli
Date: Tue Nov 20 18:15:31 2012 -0800

Forward ported to sched-dl-V6

Do you have any idea?
thank you very much.

best regards,
Mehdi

[jlelli]

Hi,

On Wed, 05 Mar 2014 01:55:38 -0800
macdi [email protected] wrote:

Hi Yuri,

I cloned the repository and I tried it, but I still have the same error.

Be sure to be on the right branch:
https://github.com/jlelli/schedtool-dl/commits/master

You missed the very last commit:
adapt to the very last changes to the ABI

Best,

• Juri

This is the results of "git log" command:

~/dev/schedtool-dl$ git log

commit 834a0da49b1e1342d8724f590af67f7e6c7135f4
Author: Juri Lelli [email protected]
Date: Fri Jan 17 17:17:44 2014 +0100

adapt to tip/master ABI

commit 8b39f4654b871786d66835dbc607bbe9a684f466
Author: Juri Lelli [email protected]
Date: Thu Jan 16 17:48:57 2014 +0100

use sizeof instead of a define value

commit fb9c8c82254ad420e4582abdeed2b6dbf693edfa
Author: Juri Lelli [email protected]
Date: Tue Dec 3 17:37:44 2013 +0100

New ABI

commit cd4e3f2f5a33c3266e25e447e8efbacb3b8c88da
Author: Juri Lelli [email protected]
Date: Wed Feb 6 12:12:58 2013 -0800

syscall_magic: syscall numbers for V7

commit 96acd38aede7ca3852a86701a45b06a248f324d0
Author: Juri Lelli [email protected]
Date: Tue Nov 20 18:15:31 2012 -0800

Forward ported to sched-dl-V6

Do you have any idea?
thank you very much.

best regards,
Mehdi

---

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#9 (comment)

[macdi]

Hi Yuri,

I updated the schedtool-dl sources and the new ABI is now working, thank you very much!
But the test makes the CPU spinning non-stop, the only way to stop that is a reboot of the machine.

Do you have any idea of how could I correct this.

My test case is sudo ./schedtool -E -t 20000:100000:100000 -e yes

best regards,
Mehdi

[jlelli]

On Thu, 06 Mar 2014 02:39:43 -0800
macdi [email protected] wrote:

Hi Yuri,

I updated the schedtool-dl sources and the new ABI is now working, thank you very much!
But the test makes the CPU spinning non-stop, the only way to stop that is a reboot of the machine.

Do you have any idea of how could I correct this.

My test case is sudo ./schedtool -E -t 20000:100000:100000 -e yes

This works here. Could you send me your CONFIG?

Thanks!

• Juri

I also tried also this simple program, but does not worked too.

#include <stdio.h>
int main() {
while(1) {
printf("run...\n");
sleep(1);
}
}

best regards,
Mehdi

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#9 (comment)