bootchart man page could simply tell how to retieve the svg from journal

[keszybz]

See systemd/systemd#657.

[sofar]

Looking at journalctl -b -F BOOTCHART --full, it allows you to extract only exactly one bootchart correctly. If bootchart was manually run several times, the charts aren't even correctly concatenated, and the output is mixed/truncated and malformed XML.

Aside from manually iterating the journal in C, I don't see a consistent way to extract bootcharts with journalctl properly one-by-one.

[keszybz]

You can always use '-n1' or similar, and select a specific journal entry using a cursor or some other match.