Saturday, 2015-02-28

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ungovHi! How hard is it to recompile the kernel? According to Cadence, I have the generic kernel, and I'd like to use my system to add effects to my bass guitar signal, so I believe I should probably use the low latency or the real time version. Is that right?18:48
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holsteinungov: there are many kernels in the sources18:50
falktxsudo apt-get install linux-lowlatency # for ubuntu18:50
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holsteinungov: i suggest, just use the kernel you have, and go from there, *if* you need lower latency18:50
falktxrecompiling a kernel is no easy task18:50
falktxI don't even do it myself18:50
holsteinlinux-lowlatency is included, as falktx states18:50
JackWinterfalktx: actually what is so difficult with kernels in debian?  don't you just "apt-get source linux" modify the script and then build it?18:58
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spectromasfalktx: is there somewhere I can grab the source for tal plugins?19:07
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falktxJackWinter: building kernels is the "easy" part. the complex thing is create debs for it19:25
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falktxspectromas: https://github.com/DISTRHO/DISTRHO-Ports see ports/tal-*19:25
spectromasthanks falktx19:27
JackWinterfalktx: ok, i'll take your word for it :)19:28
falktxJackWinter: the main thing is that is something that takes a lot of time19:28
falktxJackWinter: plus the frequent updates...19:29
JackWinteryeah, it takes times for sure.  i build on a tmps, so wine and the kernel aren't all that bad.19:30
JackWinteri am building kernels for hours already for archlinux, updating  linux-rt and linux-rt-lts and testing19:30
JackWinterthem19:31
spectromasJackWinter: how does the arch rt kernel compare to debian, module and config wise?19:32
spectromasmust still be pretty big19:33
JackWinterspectromas: i have no idea what debian does anymore.  i base mine on archlinux default kernel config.  apply the patch and change a few config options for rt.  then i just build it same as i would the default kernel19:33
JackWintervmlinuz-linux-rt is 4.2mb19:34
JackWinterthe modules dir for 3.18-rt is about 160mb.19:36
spectromasthat's painful compiling all that19:36
JackWinterthat's 10mb up from 3.14-rt19:36
JackWinteri build with SCHED_IDLE so it just builds in the background, i can play games or work on my audio at the same time without ill effects :)19:37
JackWinterbut building on a ramdisk is nice when you have to build big or many packages19:38
spectromasJackWinter: how do you set SCHED_IDLE, not come across that before?19:40
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JackWintersudo chrt -i 0 executable19:57
JackWinteractually you can do it without the sudo too, if the system is configured right19:58
spectromasthanks JackWinter20:03
JackWinterspectromas: or chrt -f -p 90 command20:05
JackWinterto run it sched_fifo20:05
JackWinterthere is also the schedtool command20:06
spectromascheers JackWinter, definitely will be giving this a try next time have something big20:11
spectromasfalktx: does tal filter (1) have a runtime dependency? It still doesn't do anything for me, just compiled it against whatever is in my system, and still no filter whatsoever20:15
spectromasall the other tal plugins work fine20:15
falktxit needs something to be done first...20:15
falktxspectromas: try some of its presets20:16
falktxI think some of the filter functions depend on the host tempo20:16
spectromasfalktx: yeah I have tried that, they gain changes slightly between them but no filtering. The input gain works and volume knobs work but nothing else20:17
spectromasit's weird, filter 2 works20:17
falktxI remember having it working20:17
falktxwhich host?20:18
spectromasfirst vst in renoise but I'm just using carla now20:18
spectromaslv220:18
falktxthe vst is usually safer for tests20:18
spectromasok I'll build that20:19
spectromasyeah nothing :/20:23
falktxping me about this next week20:24
falktxI don't have much time to check on this right now20:25
spectromasok will do, thanks falktx20:25
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daeavelwyncould it have advantage, improving audio stuff,  of using chrt with cadence ?23:59

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