From: David Miller <davem@davemloft.net>
To: fw@strlen.de
Cc: linux@stwm.de, netdev@vger.kernel.org,
steffen.klassert@secunet.com, linux-kernel@vger.kernel.org,
torvalds@linux-foundation.org
Subject: Re: Regression: kernel 4.14 an later very slow with many ipsec tunnels
Date: Thu, 13 Sep 2018 10:23:05 -0700 (PDT) [thread overview]
Message-ID: <20180913.102305.939671149040995911.davem@davemloft.net> (raw)
In-Reply-To: <20180913163848.ni5xc4gc4d6uusdn@breakpoint.cc>
From: Florian Westphal <fw@strlen.de>
Date: Thu, 13 Sep 2018 18:38:48 +0200
> Wolfgang Walter <linux@stwm.de> wrote:
>> What I can say is that it depends mainly on number of policy rules and SA.
>
> Thats already a good hint, I guess we're hitting long hash chains in
> xfrm_policy_lookup_bytype().
I don't really see how recent changes can influence that.
And the bydst hashes have been dynamically sized for a very long time.
I might have missed something...
next prev parent reply other threads:[~2018-09-13 17:35 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-13 11:30 Regression: kernel 4.14 an later very slow with many ipsec tunnels Wolfgang Walter
2018-09-13 13:58 ` Florian Westphal
2018-09-13 15:46 ` Wolfgang Walter
2018-09-13 16:38 ` Florian Westphal
2018-09-13 17:23 ` David Miller [this message]
2018-09-13 21:03 ` Florian Westphal
2018-09-13 21:12 ` David Miller
2018-09-14 5:06 ` Steffen Klassert
2018-09-14 5:54 ` Florian Westphal
2018-09-14 6:01 ` Steffen Klassert
2018-09-14 8:01 ` Christophe Gouault
2018-09-14 11:49 ` Wolfgang Walter
2018-10-02 14:45 ` Wolfgang Walter
2018-10-02 14:56 ` Florian Westphal
2018-10-02 17:34 ` Wolfgang Walter
2018-10-02 21:35 ` Florian Westphal
2018-10-04 13:57 ` Wolfgang Walter
2018-10-25 9:38 ` Wolfgang Walter
2018-10-25 17:34 ` David Miller
2018-10-25 19:24 ` Florian Westphal
2018-10-26 12:18 ` Wolfgang Walter
2018-10-25 22:45 ` Florian Westphal
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=20180913.102305.939671149040995911.davem@davemloft.net \
--to=davem@davemloft.net \
--cc=fw@strlen.de \
--cc=linux-kernel@vger.kernel.org \
--cc=linux@stwm.de \
--cc=netdev@vger.kernel.org \
--cc=steffen.klassert@secunet.com \
--cc=torvalds@linux-foundation.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).