From: Armin Steinhoff <armin@steinhoff.de>
To: rt-users <linux-rt-users@vger.kernel.org>
Subject: Re: Operation not permitted / pthread_setschedparam
Date: Sun, 05 Oct 2014 16:34:13 +0200 [thread overview]
Message-ID: <543156E5.50004@steinhoff.de> (raw)
In-Reply-To: <alpine.DEB.2.11.1410042312440.4383@nanos>
Thomas Gleixner schrieb:
> On Sat, 4 Oct 2014, Armin Steinhoff wrote:
>> 8. And your second suspicion is that the ps utility is broken.
>> The question about the operation of "ps" was just a formal one .. sorry.
> Well, I'd say it's not formal. Let me cite from your previous mail:
>
>>>> If the app "demo_mn_console" has started its first RT thread, a
>>>> lot of other processes/threads are jumping to the highest RT
>>>> priority 99!!
> Did you ever try to invoke:
>
> # man ps
>
> and try to figure out what the PRI field actually means? Definitely
> not.
>
> My version of "man ps" tells me:
>
> pri PRI priority of the process. Higher number means
> lower priority.
I have two version of the "man ps" ... the statement of man page 1p
isn't applicable for SCHED_FIFO/SCHED_RR because 99 is right here the
highest prio for the scheduling.
Sorry for not bothering about the confusing handling of priorities
within LINUX ...
--Armin
next prev parent reply other threads:[~2014-10-05 14:34 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-30 10:40 Operation not permitted / pthread_setschedparam Armin Steinhoff
2014-09-30 11:44 ` Harry van Haaren
2014-09-30 12:32 ` Armin Steinhoff
2014-09-30 17:22 ` Armin Steinhoff
2014-09-30 23:09 ` Thomas Gleixner
2014-10-01 7:27 ` Armin Steinhoff
2014-10-01 7:49 ` Patrik Lundquist
2014-10-02 8:02 ` Armin Steinhoff
2014-10-04 10:49 ` Carsten Emde
2014-10-04 12:36 ` Armin Steinhoff
2014-10-04 12:50 ` Armin Steinhoff
2014-10-04 23:56 ` Thomas Gleixner
2014-10-05 11:07 ` Armin Steinhoff
2014-10-05 11:47 ` Armin Steinhoff
2014-10-05 14:34 ` Armin Steinhoff [this message]
[not found] ` <54312C88.8060609@steinhoff.de>
2014-10-05 20:54 ` Thomas Gleixner
2014-10-06 8:03 ` Armin Steinhoff
2014-10-06 13:34 ` Armin Steinhoff
2014-10-07 1:33 ` Thomas Gleixner
2014-10-07 7:57 ` Armin Steinhoff
2014-10-09 8:35 ` Operation not permitted / pthread_setschedparam / EOD Armin Steinhoff
2014-10-09 9:41 ` Pavel Vasilyev
2014-10-09 12:22 ` Crowd Funding ? Armin Steinhoff
2014-10-09 21:59 ` Richard Weinberger
2014-10-10 12:14 ` Armin Steinhoff
2014-10-11 10:04 ` Armin Steinhoff
2014-10-05 10:13 ` Operation not permitted / pthread_setschedparam Armin Steinhoff
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