From: Patrick Schaaf <netdev@bof.de>
To: Florian Westphal <fw@strlen.de>
Cc: netfilter-devel@vger.kernel.org
Subject: Re: [PATCH v2 -next 1/2] netfilter: iptables: separate counters from iptables rules
Date: Fri, 29 May 2015 13:32:22 +0200 [thread overview]
Message-ID: <2679129.rhlPpvF55Y@rofl> (raw)
In-Reply-To: <1432846296-26396-1-git-send-email-fw@strlen.de>
Hi Florian (+ list), (resend without HTML part...)
would it be feasible to have sysctl knobs to disable the counters?
Easiest approach might be to keep all the counter memory allocation
as it is (or as it is changed with your current work), and just not count at
packet processing time. Which should make things a bit faster (no
cache pollution for the RMW counter access of any matching rules.)
More complicated approach might even save the whole counter
memory consumption, faking 0 values when returning counters to
userlevel, and ignoring userlevel supplied values (iptables-restore)
best regards
Patrick
next prev parent reply other threads:[~2015-05-29 11:32 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-28 20:51 [PATCH v2 -next 1/2] netfilter: iptables: separate counters from iptables rules Florian Westphal
2015-05-28 20:51 ` [PATCH v2 -next 2/2] netfilter: store rules per NUMA node instead of per cpu Florian Westphal
2015-05-28 21:38 ` Eric Dumazet
2015-05-28 21:52 ` Florian Westphal
2015-05-28 22:04 ` Eric Dumazet
2015-05-29 9:41 ` Florian Westphal
2015-05-28 21:33 ` [PATCH v2 -next 1/2] netfilter: iptables: separate counters from iptables rules Eric Dumazet
2015-05-28 21:45 ` Florian Westphal
2015-05-28 21:54 ` Eric Dumazet
2015-05-29 10:05 ` Florian Westphal
2015-05-29 10:32 ` Eric Dumazet
2015-05-29 11:32 ` Patrick Schaaf [this message]
2015-06-05 12:28 ` Florian Westphal
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