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On 4/23/06, Kyle Lutze <kyle@×××××××××××.com> wrote: |
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> Mark Knecht wrote: |
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> > The capabilities module was for 2.4 series kernel only. To get |
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> > realtime performance with 2.6 you only need realtime-lsm. |
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> > |
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> > Load realtime-lsm then, with a user account that is part of your |
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> > realtime group, start Jack using qjackctl with realtime enabled on the |
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> > setup page. |
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> > |
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> > Hope this helps, |
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> > Mark |
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> > |
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> |
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> that's interesting to know, but I still have the other issue when |
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> realtime-lsm is loaded |
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> |
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> cannot lock down memory for RT thread (Cannot allocate memory) |
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> cannot use real-time scheduling (FIFO at priority 9) [for thread |
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> 1082132816, from thread 1082132816] (1: Operation not permitted) |
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|
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Nominally this would mean that either |
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|
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1) realtime-lsm isn't really loaded |
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2) there isn't enough memory to lock down |
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3) the user is not part of the realtime group |
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|
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We need to investigate how you built Jack, how Jack is using memory & |
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how you're running Jack. Here's some stuff that's probably important: |
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|
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lightning ~ # emerge -pv jack-audio-connection-kit |
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|
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These are the packages that I would merge, in order: |
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|
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Calculating dependencies ...done! |
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[ebuild R ] media-sound/jack-audio-connection-kit-0.100.7-r1 |
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+alsa (-altivec) -caps (-coreaudio) -debug -doc +jack-tmpfs (-mmx) |
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-netjack -oss -portaudio +sndfile (-sse) 22 kB |
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|
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Total size of downloads: 22 kB |
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lightning ~ # |
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|
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|
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lightning ~ # lsmod |
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Module Size Used by |
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<SNIP> |
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realtime 9672 0 |
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<SNIP> |
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lightning ~ # |
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|
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lightning ~ # modinfo realtime |
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filename: /lib/modules/2.6.16-gentoo-r2/extra/realtime.ko |
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license: GPL |
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description: Realtime Capabilities Security Module |
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vermagic: 2.6.16-gentoo-r2 preempt gcc-3.4 |
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license: GPL |
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description: Standard Linux Common Capabilities Security Module |
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depends: |
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vermagic: 2.6.16-gentoo-r2 preempt gcc-3.4 |
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parm: any: grant realtime privileges to any process. (int) |
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parm: gid: the group ID with access to realtime privileges. (int) |
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parm: mlock: enable memory locking privileges. (int) |
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lightning ~ # |
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|
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lightning ~ # cat /etc/modules.autoload.d/kernel-2.6 |
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# /etc/modules.autoload.d/kernel-2.6: kernel modules to load when system boots. |
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# |
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# Note that this file is for 2.6 kernels. |
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# |
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# Add the names of modules that you'd like to load when the system |
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# starts into this file, one per line. Comments begin with # and |
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# are ignored. Read man modules.autoload for additional details. |
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|
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# For example: |
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# 3c59x |
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#fglrx |
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radeon |
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snd-intel8x0 |
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snd-hdsp |
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ieee1394 |
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ohci1394 |
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sbp2 serialize_io=0 |
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realtime gid=600 any=1 |
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lightning ~ # |
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|
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lightning ~ # cat /etc/fstab | grep jack |
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none /tmp/jack tmpfs defaults 0 0 |
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lightning ~ # |
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|
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>From my kernel config: |
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|
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# |
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# Security options |
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# |
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# CONFIG_KEYS is not set |
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CONFIG_SECURITY=y |
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# CONFIG_SECURITY_NETWORK is not set |
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CONFIG_SECURITY_CAPABILITIES=m |
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# CONFIG_SECURITY_ROOTPLUG is not set |
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# CONFIG_SECURITY_SECLVL is not set |
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|
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|
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> |
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> and that's with realtime selected in qjackctl. |
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> |
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> so what took the place of capabilities in 2.6? |
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|
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LSM, and with it realtime-lsm |
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|
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- Mark |
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|
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-- |
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