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From: Akshat Kakkar <akshat.1984@gmail.com>
To: netdev <netdev@vger.kernel.org>
Subject: nflog performance ...
Date: Tue, 29 Aug 2017 16:11:52 +0530	[thread overview]
Message-ID: <CAA5aLPj=znm_RDVgPGzZj6VixPdWVMCEVco7yxoa4gL0On+pyg@mail.gmail.com> (raw)

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?

             reply	other threads:[~2017-08-29 10:41 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-08-29 10:41 Akshat Kakkar [this message]
2017-08-30  7:57 ` nflog performance Akshat Kakkar
2017-08-30 15:37   ` Stephen Hemminger

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