reniced.conf

# format:
# command perl_regular_expression

# This is a non-standard reniced.conf. It's not run with reniced but
# as root with:

## perl -0777 -pe 's[sub generate_ps_command.*?\{.*?\n\}][sub generate_ps_command { "ps H -eo lwp,cmd" }]s;' < /usr/bin/reniced | /usr/bin/perl

# and to get debug output:

## perl -0777 -pe 's[sub generate_ps_command.*?\{.*?\n\}][sub generate_ps_command { "ps H -eo lwp,cmd" }]s;' < /usr/bin/reniced | /usr/bin/perl - -v

# This allows us to match against the full command + argument list,
# not just the command name.

# Helper commands for editing this file:
## Get a list of processes/nice levels:
### ps -eo "%n %p %y %x %c %a" | perl -pe 's[\d\s+\K(\d+)(?= )][chomp(my $ret = qx{ionice -p $1}); qq{ $1 <$ret> }]e'
## Get a list of things that haven't been ioniced'd:
### ps -eo "%n %p %y %x %c %a" | perl -pe 's[\d\s+\K(\d+)(?= )][chomp(my $ret = qx{ionice -p $1}); qq{ $1 <$ret> }]e' | grep '<none: prio 0>'
## Run reniced and see what happens:
### sudo /usr/bin/reniced

### Interactive user processes

-10 emacs
-10 irssi
-10 bash
-10 screen
-10 tmux

-5  sshd
-5  htop
-5  top

### Interactive foreground services

# Don't bring us down on IO-intensive hash checks
1i ^rtorrent
2i ^unrar

### Non-interactive background services
9b5 ntpd
10b6 (?<!r)tor(?!rent)
11b6 dbus-daemon --system
15b5 bitcoind
15b5 java

# Mailman
9b6 (?:mailmanctl|qrunner)

### Interactive network services

# Misc services
1b1 acpid
1b1 dbus-daemon
1b1 cron
1b1 redis-server
1b1 mdadm
1b1 haveged
1b1 dockerd
1b1 containerd
1b1 snapd
1b1 libvirtd

# Web services:
1b1 vlogger.*access log
1b1 php5-cgi
1b1 fastcgi\.pl$
1b1 memcached
1b1 mysqld

# Mail services:
2b2 ^(?:master|smtpd|anvil|pickup|qmgrx|qmgr)
2b2 qpsmtpd

# DNS:
1b1 pdns_(?:server|recursor)

# IM:
1b1 bitlbee

# VPN
1b1 openvpn

# IRC/Telegram bots
## The teleircd
3b3 node
3b3 failo
3b3 hailo
3b3 pocoirc

# We only use these for cron-type stuff
5b5 postgres
5b5 fail2ban

# identd
2b2 oidentd

# udevd
2b2 udevd

# syslog
2b2 rsyslogd