From: Florian Westphal <fw@strlen.de>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Florian Westphal <fw@strlen.de>, netfilter-devel@vger.kernel.org
Subject: Re: [PATCH 7/7] netfilter: connlimit: use rbtree for per-host conntrack obj storage
Date: Sun, 9 Mar 2014 19:43:57 +0100 [thread overview]
Message-ID: <20140309184357.GC14012@breakpoint.cc> (raw)
In-Reply-To: <1394390520.20149.108.camel@edumazet-glaptop2.roam.corp.google.com>
Eric Dumazet <eric.dumazet@gmail.com> wrote:
> > Hmm, that would be nice. I need to think about it again,
> > problem is that moving it at this time could result in
> > freeing the would-be parent of the new node.
>
> Yeah, thats why fq_gc() is followed by a full lookup.
>
> In practice, the lookup done in fq_gc() brings in cpu cache all the
> cache lines, and second lookup is very fast.
I had wondered about this. Ok, that makes sense.
I'll change it to be more like fq.
Thanks for explaining this.
next prev parent reply other threads:[~2014-03-09 18:43 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-07 13:37 [PATCH 0/7] netfilter: connlimit: scalability improvements Florian Westphal
2014-03-07 13:37 ` [PATCH 1/7] netfilter: connlimit: factor hlist search into new function Florian Westphal
2014-03-07 13:37 ` [PATCH 2/7] netfilter: connlimit: improve packet-to-closed-connection logic Florian Westphal
2014-03-07 13:37 ` [PATCH 3/7] netfilter: connlimit: move insertion of new element out of count function Florian Westphal
2014-03-07 13:37 ` [PATCH 4/7] netfilter: connlimit: use kmem_cache for conn objects Florian Westphal
2014-03-07 13:37 ` [PATCH 5/7] netfilter: connlimit: use keyed locks Florian Westphal
2014-03-09 17:13 ` Jan Engelhardt
2014-03-09 18:31 ` Florian Westphal
2014-03-07 13:37 ` [PATCH 6/7] netfilter: connlimit: make same_source_net signed Florian Westphal
2014-03-07 13:37 ` [PATCH 7/7] netfilter: connlimit: use rbtree for per-host conntrack obj storage Florian Westphal
2014-03-07 14:47 ` Eric Dumazet
2014-03-07 16:15 ` Florian Westphal
2014-03-09 18:42 ` Eric Dumazet
2014-03-09 18:43 ` Florian Westphal [this message]
2014-03-09 21:45 ` Florian Westphal
2014-03-12 12:58 ` [PATCH 0/7] netfilter: connlimit: scalability improvements Pablo Neira Ayuso
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20140309184357.GC14012@breakpoint.cc \
--to=fw@strlen.de \
--cc=eric.dumazet@gmail.com \
--cc=netfilter-devel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).