[LAU] apt-get and RT kernel strangeness

[rosea.grammostola]

On 12/15/2010 04:31 AM, yermandu wrote:
> Check this http://jackaudio.org/linux_group_sched

grep -i RT_GROUP_SCHED /boot/config-2.6.33.7-rt29-1-amd64
# CONFIG_RT_GROUP_SCHED is not set



>
> 2010/12/14 rosea.grammostola <rosea.grammostola at gmail.com 
> <mailto:rosea.grammostola at gmail.com>>
>
>     On 12/14/2010 04:50 PM, rosea.grammostola wrote:
>
>         On 12/14/2010 04:26 PM, Jörn Nettingsmeier wrote:
>
>             On 12/14/2010 04:10 PM, rosea.grammostola wrote:
>
>                 On 12/13/2010 09:38 PM, rosea.grammostola wrote:
>
>                     Hi,
>
>                     I have an oddity on Ubuntu Lucid.
>
>                     Installing libboost1.40-dev, default kernel, no
>                     problemo.
>
>                     Installing libboost1.40-dev, RT kernel, install
>                     (unpacking/
>                     processing) takes minuts!
>
>                     I have this oddity with another package, but most
>                     packages install
>                     normal.
>
>                     $ uname -a
>                     Linux ubuntu 2.6.33-29-realtime #1-Ubuntu SMP
>                     PREEMPT RT Wed Aug 4
>                     20:14:20 UTC 2010 i686 GNU/Linux
>
>                     from: https://launchpad.net/~abogani/+archive/ppa/
>                     <https://launchpad.net/%7Eabogani/+archive/ppa/>
>
>                     $ apt-cache policy libboost1.40-dev
>                     libboost1.40-dev:
>                       Installed: 1.40.0-4ubuntu4
>                       Candidate: 1.40.0-4ubuntu4
>                       Version table:
>                      *** 1.40.0-4ubuntu4 0
>                             500 http://nl.archive.ubuntu.com/ubuntu/
>                     lucid/main Packages
>                             100 /var/lib/dpkg/status
>
>
>                     (maybe not interesting, but iotop says:
>                     CONFIG_TASK_DELAY_ACCT not
>                     enabled in kernel, cannot determine SWAPIN and IO %)
>
>                 Any idea what this could be?
>
>             wild guesses:
>
>         Thanks
>
>             * swap disabled in the rt kernel, and you're low on RAM?
>
>         $  grep -i swap  /boot/config-2.6.33-29-realtime
>         CONFIG_SWAP=y
>         CONFIG_CGROUP_MEM_RES_CTLR_SWAP=y
>         CONFIG_X86_BSWAP=y
>         CONFIG_RING_BUFFER_ALLOW_SWAP=y
>
>
>         2GB RAM
>
>             * are you running real-time tasks in the background (such
>             as jack)?
>
>         No
>
>         Hmm....
>
>
>     Strange that is only happens with some packages like libboost-dev...
>
>     Are there other RT kernels available for Ubuntu Lucid, to test a
>     bit? Should a kernel made for Debian also work?
>
>     Thanks in advance,
>
>     \r
>
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>
>
>
>
> -- 
> yermandu [at] gmail dot com
>

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