netdev - Re: nflog performance ...

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Date:   Wed, 30 Aug 2017 08:37:58 -0700
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     Akshat Kakkar <akshat.1984@...il.com>
Cc:     netdev <netdev@...r.kernel.org>
Subject: Re: nflog performance ...

On Wed, 30 Aug 2017 13:27:57 +0530
Akshat Kakkar <akshat.1984@...il.com> wrote:

> Anybody?
> 
> On Tue, Aug 29, 2017 at 4:11 PM, Akshat Kakkar <akshat.1984@...il.com> wrote:
> > I am using ulogd2 to log iptables activity.
> > However, when using pgsql as output plugin ... performance is very
> > very sluggish. (~130-150 entries per second)
> >
> > To enhance performance I am trying
> >
> > modprobe ipt_ULOG nlbufsiz=65535 flushtimeout=1000
> >
> > but this gives error : ipt_ULOG module not found.
> >
> >
> > On the same lines, I tried
> >
> > modprobe ipt_NFLOG nlbufsiz=65535 flushtimeout=1000
> > It didnt give any error !!!
> >
> > But still there is no increase in performance.
> > Are these values effective?
> >
> > I am also using  --nflog-threshold 50 in iptables rule.
> >
> > I am setting buffer_size as
> > netlink_socket_buffer_size=104857600
> > netlink_socket_buffer_maxsize=1048576000
> >
> > When running ulog, it gives message of setting buffer size as
> > 21708600. Though it didnt give any message like
> > "ulogd_inppkt_NFLOG.c:443 We are losing events, increasing buffer size
> > to xxxxxx"
> > but again why it is only setting buffer size as 21708600 though I have
> > set in config as 104857600?  

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