[Oisf-users] Kernel packets drops in AFpacket AUTO mode

Fernando Sclavo fsclavo at gmail.com
Thu Jun 13 17:36:58 UTC 2013

Here are the answers:

Will: as you mentioned, AMD has a technology called "Turbo  core", but I
disabled frequency stepping in BIOS, setting power management to "Maximun
Performance". In this mode, all cores run at 2.70Mhz all the time.

Anoop: is there any repo with dev suricata or I need to compile it?

Peter: I tried Suricata with no rules for about an hour with no kernel
drops (business hour with real traffic)

Victor: disabled all decode, http and smtp events rules as suggested.

Thanks for your help!

2013/6/13 Victor Julien <lists at inliniac.net>

> On 06/12/2013 08:28 PM, Fernando Sclavo wrote:
> >  - decoder-events.rules # available in suricata sources under rules dir
> >  - http-events.rules    # available in suricata sources under rules dir
> >  - smtp-events.rules    # available in suricata sources under rules dir
> Are you getting a lot of hits on these? They are quite efficient if the
> traffic is okay, but if there are a lot of protocol warnings/errors they
> can be quite inefficient. Maybe it's worth a shot to disable them for a
> few days.
> --
> ---------------------------------------------
> Victor Julien
> http://www.inliniac.net/
> PGP: http://www.inliniac.net/victorjulien.asc
> ---------------------------------------------
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