[systemd-devel] High CPU usage of journald

Kok, Auke-jan H auke-jan.h.kok at intel.com
Mon Feb 18 18:07:41 PST 2013

On Mon, Feb 18, 2013 at 2:50 PM, Colin Guthrie <gmane at colin.guthr.ie> wrote:
> 'Twas brillig, and Holger Hans Peter Freyther at 18/02/13 18:52 did gyre
> and gimble:
>> On Mon, Feb 18, 2013 at 08:47:44AM -0800, David Strauss wrote:
>> Dear David, all,
>>> It's possible that a lot of it could also allocate on the stack or use
>>> stack-style management of a pool in heap. This is pretty
>>> performance-critical code, and we're seeing similar CPU overhead.
>> I think upstream doesn't care about the CPU overhead of the journald.
> I don't really think that's true. It certainly hasn't been optimized
> heavily yet, and more concentration is definitely going into features at
> present, but that's not to say that performance isn't a goal in the
> completeness of time. Also there will be lots of people for whom this is
> more of a priority right now and thus they will be the ones perhaps
> contributing the patches to help edge things in that direction :)

It's certainly been on my radar already as a problem for performance
numbers... I'd like to see if we can fix this.


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