147 lines
3.8 KiB
Python
Executable file
147 lines
3.8 KiB
Python
Executable file
#!/usr/bin/python
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#
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# tuned-adm: A command line utility for switching between user
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# definable tuning profiles.
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#
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# Copyright (C) 2012 Red Hat, Inc.
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# Authors: Jan Kaluza
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#
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import os
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import sys
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import locale
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import signal
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PIDFILE = "/var/run/tuned/tuned.pid"
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def usage():
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print """
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Usage: tuned-adm <command>
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commands:
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help show this help message and exit
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list list all available and active profiles
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active show current active profile
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off switch off all tunning
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profile <profile-name> switch to given profile
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"""
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def listdir_joined(path):
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return [os.path.join(path, entry) for entry in os.listdir(path)]
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class Tuned_adm:
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def error(self, msg, exit_code = 1):
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print >>sys.stderr, msg
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sys.exit(exit_code)
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def check_permissions(self):
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if not os.getuid() == 0:
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self.error("Only root can run this script.", 2)
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def run(self, args):
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if args[0] == "list":
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self.show_profiles()
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elif args[0] == "active":
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self.show_active_profile()
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#self.service_status("tuned")
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#self.service_status("ktune")
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elif args[0] == "off":
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self.check_permissions()
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self.off()
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elif args[0] == "profile":
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#if len(args) == 2:
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self.check_permissions()
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self.set_active_profile(args[1:])
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#else:
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#self.error("Invalid profile specification. Use 'tuned-adm list' to get all available profiles.")
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else:
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self.error("Nonexistent argument '%s'." % args[0])
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def off(self):
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pid = 0
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try:
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with open(PIDFILE) as f:
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pid = int(f.read())
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except (OSError,IOError) as e:
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pass
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if pid:
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os.kill(pid, signal.SIGTERM)
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def show_active_profile(self):
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try:
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with open("/etc/tuned/active_profile") as f:
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print "Current active profile:", f.read().replace("\n", " ")
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except:
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pass
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def get_profiles(self):
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profiles = []
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try:
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profiles += listdir_joined("/usr/lib/tuned")
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except:
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pass
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try:
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profiles += listdir_joined("/etc/tuned")
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except:
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pass
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return sorted(map(lambda p: os.path.basename(p), \
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filter(lambda p: os.path.exists(os.path.join(p, "tuned.conf")), profiles)))
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def show_profiles(self):
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print "Available profiles:"
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for p in self.get_profiles():
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print "- " + p
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self.show_active_profile()
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def set_active_profile(self, profiles):
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pid = 0
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try:
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with open(PIDFILE) as f:
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pid = int(f.read())
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except (OSError,IOError) as e:
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self.error("Cannot read %s: %s" % (PIDFILE, str(e)))
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for profile in profiles:
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if not profile in self.get_profiles():
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self.error("Profile %s doesn't exist." % profile)
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if pid:
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try:
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with open("/etc/tuned/active_profile", "w") as f:
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f.write('\n'.join(profiles))
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except (OSError,IOError) as e:
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log.error("Cannot write profile into /etc/tuned/active_profile: %s" % (e))
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os.kill(pid, signal.SIGHUP)
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if __name__ == "__main__":
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args = sys.argv[1:]
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if len(args) < 1:
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print >>sys.stderr, "Missing arguments."
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usage()
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sys.exit(1)
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if args[0] in [ "help", "--help", "-h" ]:
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usage()
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sys.exit(0)
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tuned_adm = Tuned_adm()
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tuned_adm.run(args)
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