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ogmkp / wireplumber.md
Created September 21, 2025 12:54 — forked from gtirloni/wireplumber.md
How to disable audio devices with Pipewire

Find your devices

$ pactl list short

Create the Wireplumber rule to disable the device

$ mkdir -p $HOME/.config/wireplumber/main.lua.d
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ogmkp / skylake-tuning-linux.md
Created September 20, 2025 22:24 — forked from Brainiarc7/skylake-tuning-linux.md
This gist will show you how to tune your Intel-based Skylake, Kabylake and beyond Integrated Graphics Core for performance and reliability through GuC and HuC firmware usage on Linux.

Tuning Intel Skylake and beyond for optimal performance and feature level support on Linux:

Note that on Skylake, Kabylake (and the now cancelled "Broxton") SKUs, functionality such as power saving, GPU scheduling and HDMI audio have been moved onto binary-only firmware, and as such, the GuC and the HuC blobs must be loaded at run-time to access this functionality.

Enabling GuC and HuC on Skylake and above requires a few extra parameters be passed to the kernel before boot.

Instructions provided for both Fedora and Ubuntu (including Debian):

Note that the firmware for these GPUs is often packaged by your distributor, and as such, you can confirm the firmware blob's availability by running:

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ogmkp / gist:776f8780529896652c919122ea6cc684
Created October 22, 2024 13:03 — forked from tayvano/gist:6e2d456a9897f55025e25035478a3a50
complete list of ffmpeg flags / commands
Originall From: Posted 2015-05-29 http://ubwg.net/b/full-list-of-ffmpeg-flags-and-options
This is the complete list that’s outputted by ffmpeg when running ffmpeg -h full.
usage: ffmpeg [options] [[infile options] -i infile]… {[outfile options] outfile}…
Getting help:
-h — print basic options
-h long — print more options
-h full — print all options (including all format and codec specific options, very long)
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ogmkp / edit-init-rc.md
Created July 3, 2024 20:15 — forked from ashutosh-mishra/edit-init-rc.md
How to run custom script from init.rc, How to Extract Android Kernel And Modify The Boot Ramdisk(Android 4+)

init.rc changes

init.rc changes to run any script Can be used to start any android application, service

on property:dev.bootcomplete=1
    exec - system system -- /system/bin/sh <custom script path>
    # exec - system system -- /system/bin/sh /data/local/bootscript/testservice.sh

Script can contains applications start, stop commands

0. Don't have a SIM card in when you're updating radio firmware or it will bomb out partway through as it changes from internal IP to IP passthrough
1. Disable external IP passthrough mode: Network Setting -> Broadband -> Cellular APN -> #1 -> Modify icon -> "IP Passthrough" slider to off
2. Use "management" Wi-Fi AP as general Wi-Fi AP (with limitations) -> Network Setting -> Bridge1 -> Modify icon -> Move the Wi-Fi AP interface to the pane on the right alongside LAN1
NOTE: by default, once you do the above, the router will happily pass traffic from devices on the Wi-Fi AP to other devices on the LAN1 subnet, but will block traffic originating from the Wi-Fi AP from exiting to the Internet via the LTE side of the device. You can clumsily hack around this by setting another device, e.g. another Wi-Fi AP or Raspberry Pi or Cray supercomputer, as the default gateway for the LAN1 subnet in your DHCP server config, and pointing *that* device at the Zyxel as *its* default GW. This adds additional hops, but enabl
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ogmkp / rclocal
Created February 1, 2024 15:32 — forked from cdgraff/rclocal
Ifconfig to tunning network card Queue
# increase txqueuelen for 10G NICS
/sbin/ifconfig p5p1 txqueuelen 10000
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ogmkp / limit.conf
Created February 1, 2024 15:32 — forked from cdgraff/limit.conf
HLS Tunning limit.conf
* soft nproc 1048576
* hard nproc 1048576
* soft nofile 1048576
* hard nofile 1048576
* soft stack 1048576
* hard stack 1048576
* soft memlock unlimited
* hard memlock unlimited
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ogmkp / etc.sysctl.d.20-streaming-tuning.conf
Created February 1, 2024 15:32 — forked from cdgraff/etc.sysctl.d.20-streaming-tuning.conf
sysctl conf setting for Ubuntu 14.04.1
fs.file-max=1048576
fs.inotify.max_user_instances=1048576
fs.inotify.max_user_watches=1048576
fs.nr_open=1048576
net.core.netdev_max_backlog=1048576
net.core.rmem_max=16777216
net.core.somaxconn=65535
net.core.wmem_max=16777216
net.ipv4.tcp_congestion_control=htcp
net.ipv4.ip_local_port_range=1024 65535
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ogmkp / gist:81cd9c7ee36e138e38429ef06a962829
Created January 27, 2024 15:33 — forked from zakkak/gist:ab08672ff9d137bbc0b2d0792a73b7d2
Resizing a filesystem using qemu-img and fdisk

Occasionally we will deploy a virtual instance into our KVM infrastructure and realize after the fact that we need more local disk space available. This is the process we use to expand the disk image. This process assumes the following:

  • You're using legacy disk partitions. The process for LVM is similar and I will describe that in another post.
  • The partition you need to resize is the last partition on the disk.

This process will work with either a qcow2 or raw disk image. For

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ogmkp / perf.md
Created October 24, 2023 15:12 — forked from martinus/perf.md
perf config

/etc/sysctl.conf

kernel.perf_event_paranoid = -1
kernel.perf_cpu_time_max_percent = 5
kernel.perf_cpu_time_max_percent=10000