From: Carsten Emde <Carsten.Emde@osadl.org>
To: sashka@mail.ru
Cc: linux-rt-users@vger.kernel.org
Subject: Re: rt for newbie
Date: Fri, 28 Oct 2011 00:21:52 +0200 [thread overview]
Message-ID: <4EA9D980.5080903@osadl.org> (raw)
In-Reply-To: <CADZpk3sbagk7nTfjuXpvwtoDd6U+4sY_W=eH9+jowuUqpjFvfQ@mail.gmail.com>
Sashka,
> [..]
> I've got it build several time. I'm confused with all those different
> guides telling me what to enable and disable. Most of them are
> outdated, as I can see.
The usual recommendation is:
1. Get the config of your distro
# cd /usr/src/kernels/linux-3.0.7-rt20
# cp /boot/config-`uname -r` .config
2. Configure the kernel for RT
# make menuconfig
Processor type and features --->
[ ] Tickless System (Dynamic Ticks)
Preemption Model (Fully Preemptible Kernel (RT)) --->
Kernel hacking --->
[ ] Check for stack overflows
To check out the new kernel for its RT capabilities:
# cd /usr/src
# git clone https://github.com/clrkwllms/rt-tests
# cd rt-tests
# make rpm
# rpm -ivh RPMS/*/rt-tests*.rpm
# cyclictest -m -Sp99 -i100 -d0
Let us know what worst-case latency you got.
-Carsten.
next prev parent reply other threads:[~2011-10-27 22:33 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-27 17:58 rt for newbie Sashka
2011-10-27 19:01 ` jordan
2011-10-27 19:47 ` Sashka
2011-10-27 20:47 ` jordan
2011-10-27 22:21 ` Carsten Emde [this message]
2011-10-28 7:37 ` Dennis Borgmann
2011-10-28 16:50 ` Carsten Emde
2011-10-28 13:29 ` Sashka
2011-10-28 17:11 ` Carsten Emde
2011-10-31 8:26 ` Dennis Borgmann
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