[SOLVED] Giving maximum priority to Pulse

Roken · 2020-01-25 14:02:35

This is probably very niche, but here goes.

My system is installed with Pulseaudio as the soundserver. Pulse is working very well.

I have a turntable (the type used for vinyl records), with a USB out. I don't have a dedicated amp or speakers (both on the shoppng list, as is a new turntable as it happens), so I use my PC as an amp. The PC has 5.1 audio.

I'm also an amateur 3D artist, using mainly Blender. Blender also works very well on my system.

However, when starting to render with Blender, if I have an album playing, because Blender will use as much of the system as it can get, Pulse starts dropping and I get what, in the old days I would have thought of as a scratch on the vinyl, and skips.

Is there a way to ensure pulse gets as much processor power as it needs, regardless of what else is running on my system?

Last edited by Roken (2020-01-26 07:41:04)

WorMzy · 2020-01-25 14:22:03

https://wiki.archlinux.org/index.php/Im … _processes

kokoko3k · 2020-01-25 14:49:54

Try with the environment variable value: PULSE_LATENCY_MSEC=150 too.

But instead of pushing pulse (rt priorities means less performance/throughput), I'd try to lower the priority of blender, it seems the perfect candidate for SCHED_BATCH and probably it will increase his performance too, due to higher timeslice (more cpu cache hits)

Warning! ( )

#> man schedtool wrote:

For SCHED_BATCH you certainly need the a recent 2.6 kernel.

Last edited by kokoko3k (2020-01-25 15:17:16)

Roken · 2020-01-25 21:52:44

kokoko3k wrote:

But instead of pushing pulse (rt priorities means less performance/throughput), I'd try to lower the priority of blender, it seems the perfect candidate for SCHED_BATCH and probably it will increase his performance too, due to higher timeslice (more cpu cache hits)

I didn't know about this at all, but a first test is promising (and as a side effect, I just found out that Whole Lotta Love by Zeppelin has stereo separation equal to Bohemian Rhapsody, so double bonus).

Good call.

kokoko3k · 2020-01-25 23:19:52

Well, i guess extreme stereo separation was quite common in 70s/80s, try 'early' Bowie too ;-)

Last edited by kokoko3k (2020-01-25 23:20:28)

Roken · 2020-01-26 07:40:41

kokoko3k wrote:

try 'early' Bowie too ;-)

Already on my shopping list for the next visit to vinyl exchange in Manchester

Arch Linux

#1 2020-01-25 14:02:35

[SOLVED] Giving maximum priority to Pulse

#2 2020-01-25 14:22:03

Re: [SOLVED] Giving maximum priority to Pulse

#3 2020-01-25 14:49:54

Re: [SOLVED] Giving maximum priority to Pulse

#4 2020-01-25 21:52:44

Re: [SOLVED] Giving maximum priority to Pulse

#5 2020-01-25 23:19:52

Re: [SOLVED] Giving maximum priority to Pulse

#6 2020-01-26 07:40:41

Re: [SOLVED] Giving maximum priority to Pulse

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