[systemd-devel] systemd hangs after Welcome message when LogLevel=debug

[Lennart Poettering]

On Fri, 17.01.14 16:52, David Timothy Strauss (david at davidstrauss.net) wrote:

> It would be nice if bootup could realize the journal queue is full and
> wait for journal startup before proceeding further. It might cause
> some annoying non-determinism, though.

Not following here. Logging in syslog and the journal is synhchronous:
as soon as the socket fills up the clients start to block until the
other side made space again. THis means that no messages should be lost
and boot-up should be neatly synchronized to the logging sserver speed.

Note that by default the socket buffer is really small. The kernel puts
a limit to 15 messages by default, (/proc/sys/net/unix/max_dgram_qlen
can be used to change this, unfortunately only globally), and the socket
buffer limit in bytes is pretty short too... -- the latter is now bumped
if possible with systemd git, but that only works with priviliged
clients...

Lennart

-- 
Lennart Poettering, Red Hat