Am 24.08.2013 15:03, schrieb Barney Holmes:
Quoting hermann meyer <brummer-@xxxxxx>:
Am 24.08.2013 14:25, schrieb Ralf Mardorf:
On Sat, 2013-08-24 at 14:13 +0200, hermann meyer wrote:
CONFIG_NO_HZ is available, but CONFIG_NO_HZ_FULL still isn't
But it was. From a private mail a while ago:
On Tue, 2013-08-13 at 19:01 +0200, Joakim Hernberg wrote:
jack@tor /home/jack $ uname -a
Linux tor 3.10.6-rt3-1-rt #1 SMP PREEMPT RT Tue Aug 13 13:59:13 CEST
2013 x86_64 GNU/Linux
jack@tor /home/jack $ zgrep _HZ /proc/config.gz
CONFIG_NO_HZ_COMMON=y
# CONFIG_HZ_PERIODIC is not set
CONFIG_NO_HZ_IDLE=y
# CONFIG_NO_HZ_FULL is not set
CONFIG_NO_HZ=y
# CONFIG_HZ_100 is not set
# CONFIG_HZ_250 is not set
# CONFIG_HZ_300 is not set
CONFIG_HZ_1000=y
CONFIG_HZ=1000
jack@tor /home/jack $
I was willing to test the kernel when it's enabled, but the kernel did
cause an issue on my machine already when it was disabled.
Here is what I get
uname -a
Linux box 3.10.9-rt5 #1 SMP PREEMPT RT Fri Aug 23 11:14:14 CEST 2013
i686 GNU/Linux
zgrep _HZ /proc/config.gz
CONFIG_HZ_PERIODIC=y
# CONFIG_NO_HZ_IDLE is not set
# CONFIG_NO_HZ is not set
# CONFIG_HZ_100 is not set
# CONFIG_HZ_250 is not set
# CONFIG_HZ_300 is not set
CONFIG_HZ_1000=y
CONFIG_HZ=1000
This is plain vanila +rt patch.
Aha, found out why I haven't the CONFIG_NO_HZ_FULL option,
it is marked as 64bit only, but I run i686,
https://groups.google.com/forum/#!topic/linux.kernel/nq3HSPY3-Vg
- it's marked 64-bit only at the moment - the 32-bit support patch is
small but did not get ready in time.
There are some reasons for not having to set some of these high
resolution timers, especially if you are using MIDI through Jack. See
- http://www.linuxmusicians.com/viewtopic.php?f=27&t=10058&p=44078#p43871
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