golden hour

/usr/lib/python2.7/site-packages/tuned/plugins

File/Folder	Size	Actions
__init__.py	49 B
__init__.pyc	232 B
__init__.pyo	232 B
base.py	21.7 KB
base.pyc	24.43 KB
base.pyo	24.43 KB
decorators.py	983 B
decorators.pyc	1.52 KB
decorators.pyo	1.52 KB
exceptions.py	99 B
exceptions.pyc	460 B
exceptions.pyo	460 B
hotplug.py	2.97 KB
hotplug.pyc	4.09 KB
hotplug.pyo	4.09 KB
instance	-
plugin_audio.py	2.46 KB
plugin_audio.pyc	4.36 KB
plugin_audio.pyo	4.36 KB
plugin_bootloader.py	12.6 KB
plugin_bootloader.pyc	15.47 KB
plugin_bootloader.pyo	15.47 KB
plugin_cpu.py	12.95 KB
plugin_cpu.pyc	15.46 KB
plugin_cpu.pyo	15.42 KB
plugin_disk.py	13.77 KB
plugin_disk.pyc	16.92 KB
plugin_disk.pyo	16.92 KB
plugin_eeepc_she.py	2.04 KB
plugin_eeepc_she.pyc	3.3 KB
plugin_eeepc_she.pyo	3.3 KB
plugin_modules.py	3.8 KB
plugin_modules.pyc	5.64 KB
plugin_modules.pyo	5.64 KB
plugin_mounts.py	5.17 KB
plugin_mounts.pyc	6.36 KB
plugin_mounts.pyo	6.36 KB
plugin_net.py	14.02 KB
plugin_net.pyc	16.5 KB
plugin_net.pyo	16.5 KB
plugin_scheduler.py	23.2 KB
plugin_scheduler.pyc	25.28 KB
plugin_scheduler.pyo	25.28 KB
plugin_script.py	2.47 KB
plugin_script.pyc	3.77 KB
plugin_script.pyo	3.71 KB
plugin_scsi_host.py	2.59 KB
plugin_scsi_host.pyc	5.01 KB
plugin_scsi_host.pyo	5.01 KB
plugin_selinux.py	1.56 KB
plugin_selinux.pyc	2.96 KB
plugin_selinux.pyo	2.96 KB
plugin_sysctl.py	5.45 KB
plugin_sysctl.pyc	7.33 KB
plugin_sysctl.pyo	7.33 KB
plugin_sysfs.py	2.05 KB
plugin_sysfs.pyc	3.77 KB
plugin_sysfs.pyo	3.77 KB
plugin_systemd.py	4.82 KB
plugin_systemd.pyc	6.87 KB
plugin_systemd.pyo	6.87 KB
plugin_usb.py	1.49 KB
plugin_usb.pyc	3.06 KB
plugin_usb.pyo	3.06 KB
plugin_video.py	2.81 KB
plugin_video.pyc	4.2 KB
plugin_video.pyo	4.2 KB
plugin_vm.py	2.74 KB
plugin_vm.pyc	4.31 KB
plugin_vm.pyo	4.31 KB
repository.py	1.49 KB
repository.pyc	2.46 KB
repository.pyo	2.4 KB

Edit: plugin_systemd.py

from . import base
from .decorators import *
import tuned.logs
from . import exceptions
from tuned.utils.commands import commands
import tuned.consts as consts

import os
import re

log = tuned.logs.get()

class SystemdPlugin(base.Plugin):
	"""
	Plugin for tuning systemd options.

These tunings are unloaded only on profile change followed by reboot.
	"""

def __init__(self, *args, **kwargs):
		if not os.path.isfile(consts.SYSTEMD_SYSTEM_CONF_FILE):
			raise exceptions.NotSupportedPluginException("Required systemd '%s' configuration file not found, disabling plugin." % consts.SYSTEMD_SYSTEM_CONF_FILE)
		super(SystemdPlugin, self).__init__(*args, **kwargs)
		self._cmd = commands()

def _instance_init(self, instance):
		instance._has_dynamic_tuning = False
		instance._has_static_tuning = True

def _instance_cleanup(self, instance):
		pass

@classmethod
	def _get_config_options(cls):
		return {
			"cpu_affinity": None,
		}

def _get_keyval(self, conf, key):
		if conf is not None:
			mo = re.search(r"^\s*" + key + r"\s*=\s*(.*)$", conf, flags = re.MULTILINE)
			if mo is not None and mo.lastindex == 1:
				return mo.group(1)
		return None

# add/replace key with the value
	def _add_keyval(self, conf, key, val):
		(conf_new, nsubs) = re.subn(r"^(\s*" + key + r"\s*=).*$", r"\g<1>" + str(val), conf, flags = re.MULTILINE)
		if nsubs < 1:
			try:
				if conf[-1] != "\n":
					conf += "\n"
			except IndexError:
				pass
			conf += key + "=" + str(val) + "\n"
			return conf
		return conf_new

def _del_key(self, conf, key):
		return re.sub(r"^\s*" + key + r"\s*=.*\n", "", conf, flags = re.MULTILINE)

def _read_systemd_system_conf(self):
		systemd_system_conf = self._cmd.read_file(consts.SYSTEMD_SYSTEM_CONF_FILE, err_ret = None)
		if systemd_system_conf is None:
			log.error("error reading systemd configuration file")
			return None
		return systemd_system_conf

def _write_systemd_system_conf(self, conf):
		tmpfile = consts.SYSTEMD_SYSTEM_CONF_FILE + consts.TMP_FILE_SUFFIX
		if not self._cmd.write_to_file(tmpfile, conf):
			log.error("error writing systemd configuration file")
			self._cmd.unlink(tmpfile, no_error = True)
			return False
		# Atomic replace, this doesn't work on Windows (AFAIK there is no way on Windows how to do this
		# atomically), but it's unlikely this code will run there
		if not self._cmd.rename(tmpfile, consts.SYSTEMD_SYSTEM_CONF_FILE):
			log.error("error replacing systemd configuration file '%s'" % consts.SYSTEMD_SYSTEM_CONF_FILE)
			self._cmd.unlink(tmpfile, no_error = True)
			return False
		return True

def _get_storage_filename(self):
		return os.path.join(consts.PERSISTENT_STORAGE_DIR, self.name)

def _remove_systemd_tuning(self):
		conf = self._read_systemd_system_conf()
		if (conf is not None):
			fname = self._get_storage_filename()
			cpu_affinity_saved = self._cmd.read_file(fname, err_ret = None, no_error = True)
			self._cmd.unlink(fname)
			if cpu_affinity_saved is None:
				conf = self._del_key(conf, consts.SYSTEMD_CPUAFFINITY_VAR)
			else:
				conf = self._add_keyval(conf, consts.SYSTEMD_CPUAFFINITY_VAR, cpu_affinity_saved)
			self._write_systemd_system_conf(conf)

def _instance_unapply_static(self, instance, full_rollback = False):
		if full_rollback:
			log.info("removing '%s' systemd tuning previously added by Tuned" % consts.SYSTEMD_CPUAFFINITY_VAR)
			self._remove_systemd_tuning()
			log.console("you may need to manualy run 'dracut -f' to update the systemd configuration in initrd image")

# convert cpulist from systemd syntax to Tuned syntax and unpack it
	def _cpulist_convert_unpack(self, cpulist):
		if cpulist is None:
			return ""
		return " ".join(str(v) for v in self._cmd.cpulist_unpack(re.sub(r"\s+", r",", re.sub(r",\s+", r",", cpulist))))

@command_custom("cpu_affinity", per_device = False)
	def _cmdline(self, enabling, value, verify, ignore_missing):
		conf_affinity = None
		conf_affinity_unpacked = None
		v = self._cmd.unescape(self._variables.expand(self._cmd.unquote(value)))
		v_unpacked = " ".join(str(v) for v in self._cmd.cpulist_unpack(v))
		conf = self._read_systemd_system_conf()
		if conf is not None:
			conf_affinity = self._get_keyval(conf, consts.SYSTEMD_CPUAFFINITY_VAR)
			conf_affinity_unpacked = self._cpulist_convert_unpack(conf_affinity)
		if verify:
			return self._verify_value("cpu_affinity", v_unpacked, conf_affinity_unpacked, ignore_missing)
		if enabling:
			fname = self._get_storage_filename()
			cpu_affinity_saved = self._cmd.read_file(fname, err_ret = None, no_error = True)
			if conf_affinity is not None and cpu_affinity_saved is None and v_unpacked != conf_affinity_unpacked:
				self._cmd.write_to_file(fname, conf_affinity, makedir = True)

log.info("setting '%s' to '%s' in the '%s'" % (consts.SYSTEMD_CPUAFFINITY_VAR, v_unpacked, consts.SYSTEMD_SYSTEM_CONF_FILE))
			self._write_systemd_system_conf(self._add_keyval(conf, consts.SYSTEMD_CPUAFFINITY_VAR, v_unpacked))