diff --git a/man/journald.conf.xml b/man/journald.conf.xml index 57c22565677..44fd0d2f3d7 100644 --- a/man/journald.conf.xml +++ b/man/journald.conf.xml @@ -288,21 +288,25 @@ ForwardToConsole= ForwardToWall= - Control whether log messages received by the journal daemon shall - be forwarded to a traditional syslog daemon, to the kernel log buffer (kmsg), to - the system console, or sent as wall messages to all logged-in users. These - options take boolean arguments. If forwarding to syslog is enabled but nothing - reads messages from the socket, forwarding to syslog has no effect. By default, - only forwarding to wall is enabled. These settings may be overridden at boot time - with the kernel command line options - systemd.journald.forward_to_syslog, + Control whether log messages received by the journal daemon shall be forwarded to a + traditional syslog daemon, to the kernel log buffer (kmsg), to the system console, or sent as wall + messages to all logged-in users. These options take boolean arguments. If forwarding to syslog is + enabled but nothing reads messages from the socket, forwarding to syslog has no effect. By default, + only forwarding to wall is enabled. These settings may be overridden at boot time with the kernel + command line options systemd.journald.forward_to_syslog, systemd.journald.forward_to_kmsg, systemd.journald.forward_to_console, and - systemd.journald.forward_to_wall. If the option name is - specified without = and the following argument, true is - assumed. Otherwise, the argument is parsed as a boolean. When forwarding to the - console, the TTY to log to can be changed with TTYPath=, - described below. + systemd.journald.forward_to_wall. If the option name is specified without + = and the following argument, true is assumed. Otherwise, the argument is parsed + as a boolean. + + When forwarding to the console, the TTY to log to can be changed with + TTYPath=, described below. + + When forwarding to the kernel log buffer (kmsg), make sure to select a suitably large size for + the log buffer, and ensure the kernel's rate-limiting applied to userspace processes is turned + off. Specifically, add log_buf_len=8M and printk.devkmsg=on (or + similar) to the kernel command line.