ORG.FREEDESKTOP.OOM1(5)      org.freedesktop.oom1      ORG.FREEDESKTOP.OOM1(5)

NAME
       org.freedesktop.oom1 - The D-Bus interface of systemd-oomd

INTRODUCTION
       systemd-oomd.service(8) is a system service which implements a
       userspace out-of-memory (OOM) killer. This page describes the D-Bus
       interface.

THE MANAGER OBJECT
       The service exposes the following interfaces on the Manager object on
       the bus:

           node /org/freedesktop/oom1 {
             interface org.freedesktop.oom1.Manager {
               methods:
                 DumpByFileDescriptor(out h fd);
               signals:
                 Killed(s cgroup,
                        s reason);
             };
             interface org.freedesktop.DBus.Peer { ... };
             interface org.freedesktop.DBus.Introspectable { ... };
             interface org.freedesktop.DBus.Properties { ... };
           };





   Methods
       Killed signal is sent when any cgroup is killed by oomd.

       Note that more reasons will be added in the future, and the table below
       will be expanded accordingly.

       Table 1. Killing reasons

       +----------------+---------------------------+
       |Reason          | Description               |
       +----------------+---------------------------+
       |memory-used     | Application took too much |
       |                | memory and swap.          |
       +----------------+---------------------------+
       |memory-pressure | Application took enough   |
       |                | memory and swap to cause  |
       |                | sufficient slowdown of    |
       |                | other applications.       |
       +----------------+---------------------------+

VERSIONING
       These D-Bus interfaces follow
       the usual interface versioning guidelines[1].

HISTORY
   The Manager Object
       Killed was added in version 252.

NOTES
        1. the usual interface versioning guidelines
           https://0pointer.de/blog/projects/versioning-dbus.html

systemd 255                                            ORG.FREEDESKTOP.OOM1(5)