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minq-ananicy

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Minq Ananicy - is Another auto nice daemon, with community rules support

// repository documentation

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# Ananicy

## Installation

* ![logo](http://www.monitorix.org/imgs/archlinux.png "arch logo") Arch: [AUR/minq-ananicy-git](https://aur.archlinux.org/packages/minq-ananicy-git). `paru -S minq-ananicy-git` or `yay -S minq-ananicy-git` should do the trick. Don't forget to start and enable the service by running `sudo systemctl start ananicy.service` and `sudo systemctl enable ananicy.service`.

For more information [click here](https://github.com/kuche1/minq-ananicy#installation-1)

## What's new?

More, updated and better organised rules.

---

Support for cmdline in rules added. This is particularly useful for applications that share the same name (looking at you Java). See the `freenet` rule as an example:
```
{ "name": "java", "cmdlines": ["freenet.node.NodeStarter"], "type": "service" }
```
This translates to: apply the rule to any process named `java`, that received `freenet.node.NodeStarter` as a command line argument. You can add more than one "cmdlines" in case you want to fine tune your rules.

---

Support for matching cmd by regexp:

```
{ "name": "ghc-.*", "name_is_regexp": true, "type": "compiler" }
```

# Old description

## Description
Ananicy (ANother Auto NICe daemon) — is a shell daemon created to manage processes' [IO](http://linux.die.net/man/1/ionice) and [CPU](http://linux.die.net/man/1/nice) priorities, with community-driven set of rules for popular applications (anyone may add their own rule via github's [pull request](https://help.github.com/articles/using-pull-requests/) mechanism). It's mainly for desktop usage.

I just wanted a tool for auto set programs nice in my system, i.e.:
* Why do I get lag, while compiling kernel and playing games?
* Why does dropbox client eat all my IO?
* Why does torrent/dc client make my laptop run slower?
* ...

Use ananicy to fix these problems!

## Versions
```
X.Y.Z where
X - Major version,
Y - Script version - reset on each major update
Z - Rules version - reset on each script update
```
Read more about semantic versioning [here](http://semver.org/)

## Installation
To use ananicy you must have systemd installed.

You can install ananicy manually by:
```
$ git clone https://github.com/Nefelim4ag/Ananicy.git /tmp/ananicy
$ cd /tmp/ananicy
$ sudo make install
```
* ![logo](http://www.monitorix.org/imgs/archlinux.png "arch logo") Arch: [AUR/ananicy-git](https://aur.archlinux.org/packages/ananicy-git).
* Debian/Ubuntu: use [package.sh](https://raw.githubusercontent.com/Nefelim4ag/Ananicy/master/package.sh) in repo
```
$ git clone https://github.com/kuche1/miinq-ananicy.git
$ ./minq-ananicy/package.sh debian
$ sudo dpkg -i ./minq-ananicy/ananicy-*.deb
```

Enable
```
$ sudo systemctl enable ananicy
$ sudo systemctl start ananicy
```
## Configuration
Rules files should be placed under `/etc/ananicy.d/` directory and have `*.rules` extension.
Inside .rules file every process is described on a separate line. General syntax is described below:

```
{ "name": "gcc", "type": "Heavy_CPU", "nice": 19, "ioclass": "best-effort", "ionice": 7, "cgroup": "cpu90" }
```

All fields except `name` are optional.

`name` used for match processes by exec bin name
```
~ basename $(sudo realpath /proc/1/exe)
systemd
```

Currently matching by other things is not supported.

You can check what Ananicy sees, by:
```
ananicy dump proc
```

Ananicy loads all rules in ram while starting, so to apply rules, you must restart the service.

Available ionice values:
```
$ man ionice
```

## Simple rules for writing rules
CFQ IO Scheduller also uses `nice` for internal scheduling, so it's mean processes with same IO class and IO priority, but with different nicceness will take advantages of `nice` also for IO.

1. Avoid changing `nice` of system wide process like initrd.
2. Please try to use full process name (or name with `^$` symbols like `NAME=^full_name$`)
3. When writing rule - try to only use `nice`, it must be enough in most cases.
4. Don't try set to high priority! Niceness can fix some performance problems, but can't give you more.
Example: pulseaudio uses `nice` -11 by default, if you set other cpu hungry task, with `nice` {-20..-12} you can catch a sound glitches.
5. For CPU hungry backround task like compiling, just use `NICE=19`.

About IO priority:

1. It's useful to use `{"ioclass": "idle"}` for IO hungry background tasks like: file indexers, Cloud Clients, Backups and etc.
2. It's not cool to set realtime to all tasks. The RT scheduling class is given first access to the disk, regardless of what else is going on in the system.  Thus the RT class needs to be used with some care, as it can starve other processes. So try to use ioclass first.

## Debugging
Get ananicy output with journalctl:
```
$ journalctl -efu ananicy.service
```

### Missing `schedtool`
If you see this error in the output
```
Jan 24 09:44:18 tony-dev ananicy[13783]: ERRO: Missing schedtool! Abort!
```
Fix it in Ubuntu with
```
sudo apt install schedtool
```

### Submitting new rules

Please use pull request, thanks

minq-ananicy

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