udhcpc: dont use BPF filter, users report problems (bugs 4598, 6746), commit e4785ca653d0e219926692c229673b2c1b8d6ac4

Mike Frysinger vapier at gentoo.org
Wed Feb 5 20:51:12 UTC 2014


On Wednesday, February 05, 2014 16:41:15 Cristian Ionescu-Idbohrn wrote:
> On Wed, 5 Feb 2014, Denys Vlasenko wrote:
> > On Tue, Feb 4, 2014 at 8:48 PM, Cristian Ionescu-Idbohrn 
<cristian.ionescu-idbohrn at axis.com> wrote:
> > > The backside of this, IIRC, is that udhcpc will eat up huge chunks of
> > > CPU parsing "uninteresting" packets, on "heavy" loaded networks.
> > 
> > udhcpc does not listen to the network after it established a lease.
> 
> As I said, it's not the wait to get a lease that is a problem but the
> high CPU load (parsing packets).

what is using the high CPU load ?  not udhcpc, but the kernel itself ?

what kernel are you using exactly ?  what arch ?
-mike
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