After closing everything, I now see lipstick talking to the lipstick scanner and at about one 5th the period, connman. dbus-monitor. and journald really sucks. in comparison to rsyslogd.
journald gets loaded if something is spamming it.
You can try editing
/etc/systemd/journald.conf and either playing with the rate limiter, or settting something like
MaxLevelStore=warning so it drops less interesting messages. But then you also can’t see them in the logs…
In parallel I was sitting on a web proxy (haproxy), which does a fair bit of logging, watching rsyslog (so, web traffic, constant) not register. That machine, of course has a lot more cores
I’m wondering, though, wouldn’t journald be set to be very conservative as a default? I’ll have to ask @piggz. It might be that he ships with somewhat more noisy logging.
I cannot edit the original post any more, and I can only add three tags
So I’ll add here that more or less the same happens on 188.8.131.52 / Xperia 10iii as well as my original 4.2 / Xperia 10DS.
All of the information above this post was collected on the 10ds with 4.2.
Thanks @nephros for the original report and all the additional info and discussion. I’ve created a report on our internal bug tracker, so have tagged this as “tracked”.
Good to know.
I have two ways to improve the exec() detail, one of which is a very K&R hodgepodge of chown+chmod, the other is this - but I suppose having udev depend on perl is not really feasible…
Although in synthetic performance (well, syscall count) benchmarks, perl is surprisingly lightweight, and does the job.