From: Florian Westphal <fw@strlen.de>
To: <netfilter-devel@vger.kernel.org>
Subject: [PATCH nf-next 0/3] netfilter: speed up netns cleanup
Date: Mon, 24 Apr 2017 15:37:38 +0200 [thread overview]
Message-ID: <20170424133741.2707-1-fw@strlen.de> (raw)
low hanging fruits to speed up netns cleanup in netfilter.
We're way too happy to issue expensive synchronize_rcu() all
over the place.
On my test vm 8 processes doing 32 unshare each finish in ~3 minutes,
with these patches it gets down to 40 seconds.
We could probably further improve this.
include/net/netfilter/nf_queue.h | 3 --
net/netfilter/core.c | 55 ++++++++++++++++++++++++++++++++-------
net/netfilter/nf_internals.h | 2 -
net/netfilter/nf_log.c | 1
net/netfilter/nf_queue.c | 7 +++-
net/netfilter/nfnetlink_queue.c | 18 +++++-------
6 files changed, 61 insertions(+), 25 deletions(-)
next reply other threads:[~2017-04-24 13:37 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-24 13:37 Florian Westphal [this message]
2017-04-24 13:37 ` [PATCH nf-next 1/3] netfilter: batch synchronize_net calls during hook unregister Florian Westphal
2017-04-24 13:37 ` [PATCH nf-next 2/3] netfilter: nf_log: don't call synchronize_rcu in nf_log_unset Florian Westphal
2017-04-25 6:33 ` Liping Zhang
2017-04-24 13:37 ` [PATCH nf-next 3/3] netfilter: nf_queue: only call synchronize_net twice if nf_queue is active Florian Westphal
2017-04-25 8:24 ` [PATCHo nf-next v2] netfilter: nf_log: don't call synchronize_rcu in nf_log_unset Florian Westphal
2017-05-01 9:20 ` [PATCH nf-next 0/3] netfilter: speed up netns cleanup Pablo Neira Ayuso
2017-05-01 19:37 ` Florian Westphal
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