[Oisf-users] af_packet and rss queue count

[erik clark]

Sadly, we have migrated to el repo 4.4.69 lt kernels. It was too difficult
to maintain patches for the stock kernel modules on rhel7. :/


On Wed, May 31, 2017 at 11:15 AM, Cooper F. Nelson <cnelson at ucsd.edu> wrote:

> It looks like this doesn't work anymore on current kernel revisions.
>
> Does anyone have specific "known good" kernel/suricata revision that
> this patch works with (so I can revert to it?)
>
> Thanks,
> -Coop
>
> On 12/29/2016 3:20 AM, erik clark wrote:
> > Yes, thats the patch at marc.info in the previous email. Please note the
> > submitter of that patch. :)
> >
> > On Thu, Dec 29, 2016 at 4:10 AM, Peter Manev <petermanev at gmail.com>
> wrote:
> >
> >>
> >>
> >> On 28 Dec 2016, at 15:00, erik clark <philosnef at gmail.com> wrote:
> >>
> >> (patch for ixgbe)
> >> http://marc.info/?l=linux-netdev&m=148181173415107&w=2
> >>
> >> (patch to ixgbe/src/kompat.h since it wont compile on rhel7.3 due to
> >> kernel version issues. None of this is pf_ring specific)
> >> https://raw.githubusercontent.com/ntop/PF_RING/41b6eb733e295
> >> c91375b135d2816dbdd09b4b548/drivers/intel/ixgbe/ixgbe-4.1.
> >> 5-zc/src/kcompat.h
> >>
> >>
> >> In a different mail you mentioned that there is also a patch from Red
> Hat
> >> with regards to at-packet not working on this kernel version - is this
> >> fixed/working now?
> >>
> >>
> >> (ethtool arguments and irq setting)
> >>
> >> ethtool -C em1 rx-usecs 1 adaptive-rx off
> >> ethtool -G em1 rx 4096 tx 4096
> >> for x in tso gro lro gso rx tx sg; do ethtool -K em1 $x off; done
> >> /opt/src/ixgbe-4.4.6/scripts/set_irq_affinity em1
> >> ethtool -X em1 hkey 6d:5a:6d:5a:6d:5a:6d:5a:6d:5a:
> >> 6d:5a:6d:5a:6d:5a:6d:5a:6d:5a:6d:5a:6d:5a:6d:5a:6d:5a:6d:5a:
> >> 6d:5a:6d:5a:6d:5a:6d:5a:6d:5a
> >> ethtool -N em1 rx-flow-hash tcp4 sdfn
> >> ethtool -N em1 rx-flow-hash udp4 sdfn
> >>
> >>
> >> Can you confirm all flows are good for tcp/udp/4/6?
> >> (And how do you confirm it?)
> >>
> >>
> >>
> >>
> >> I have 64 cores, and set_irq_affinity pulls a full set of 63 rss queues.
> >> Thanks!
> >>
> >> On Sat, Dec 24, 2016 at 1:28 PM, erik clark <philosnef at gmail.com>
> wrote:
> >>
> >>> I will post that on Wednesday when I get back to work. Its 6? ethtool
> >>> statements, and 2 ixgbe patches (for rhel7 at least). Anything else
> should
> >>> be just 1 patch. This is running the 4.4.6 ixgbe released from intel
> >>> directly. This has worked for the most recent 3 kernels under RHEL7.
> >>>
> >>> On Sat, Dec 24, 2016 at 12:51 PM, Peter Manev <petermanev at gmail.com>
> >>> wrote:
> >>>
> >>>>
> >>>>
> >>>>> On 24 Dec 2016, at 18:22, erik clark <philosnef at gmail.com> wrote:
> >>>>>
> >>>>> I have seen several places commenting that you should set the RSS
> >>>> queue to 1. However, when examining af_packet with Bro, a patch
> released
> >>>> from Redhat for the ixgbe kernel module, and some ethtool tweaking,
> we have
> >>>> found that (for Bro at least) running a full 63 (we have 54 cores) RSS
> >>>> queues vastly improves performance, and keeps state intact across
> sessions.
> >>>>>
> >>>>> Based on this update, which fixes the broken implementation of
> setting
> >>>> a symmetric hash in the hardware of the card
> >>>>
> >>>> Can you please share a bit in a bit more detail-
> >>>> Which ixgbe/kernel version that is ?
> >>>> Which patch is it ?
> >>>> What is the ethtool tweaking procedure?
> >>>>
> >>>> Thanks
> >>>>
> >>>>> (again ixgbe, not tested with i40e), is it still necessary to run one
> >>>> queue? If so, you can't run Bro and Suri on the same box with
> af_packet and
> >>>> get equivalent performance out of both tools. Having run Suri with 63
> >>>> queues for a week now, it seems performance is considerably better
> than
> >>>> with pf_ring, and I can not find any unusual behavior in my alerts...
> >>>>>
> >>>>> _______________________________________________
> >>>>> Suricata IDS Users mailing list: oisf-users@
> openinfosecfoundation.org
> >>>>> Site: http://suricata-ids.org | Support:
> >>>> http://suricata-ids.org/support/
> >>>>> List: https://lists.openinfosecfoundation.org/mailman/listinfo/ois
> >>>> f-users
> >>>>
> >>>
> >>>
> >>
> >
> >
> >
> > _______________________________________________
> > Suricata IDS Users mailing list: oisf-users at openinfosecfoundation.org
> > Site: http://suricata-ids.org | Support: http://suricata-ids.org/
> support/
> > List: https://lists.openinfosecfoundation.org/
> mailman/listinfo/oisf-users
> >
>
>
> --
> Cooper Nelson
> IT Security - Information Technology Services
> University of California San Diego
> (858) 534-6487 - cnelson at ucsd.edu
> https://cybersecurity.ucsd.edu
>
>
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