From: Steffen Klassert <steffen.klassert@secunet.com>
To: Yannick Brosseau <scientist@fb.com>
Cc: <herbert@gondor.apana.org.au>, <davem@davemloft.net>,
<netdev@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<kernel-team@fb.com>
Subject: Re: [PATCH v2] Optimize lookup of /0 xfrm policies
Date: Mon, 3 Sep 2018 08:56:50 +0200 [thread overview]
Message-ID: <20180903065650.GL23674@gauss3.secunet.de> (raw)
In-Reply-To: <20180831221838.25597-1-scientist@fb.com>
On Fri, Aug 31, 2018 at 06:18:38PM -0400, Yannick Brosseau wrote:
> Currently, all the xfrm policies that are not /32 end up in
> the inexact policies linked list which take a long time to lookup.
It is possible to configure which policies are going to the
hashtable and the inexact list.
You can do:
ip x p set hthresh4 0 0
This sets the hash threshold to local /0 and remote /0 netmasks.
With this configuration, all policies should go to the hashtable.
To view the configuration:
ip -s -s x p count
Can you please do your tests with this too?
I'd really like to avoid to add new code to the policy lookup
if we can get similar results with this configuration option.
prev parent reply other threads:[~2018-09-03 6:56 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-31 22:18 [PATCH v2] Optimize lookup of /0 xfrm policies Yannick Brosseau
2018-09-03 6:56 ` Steffen Klassert [this message]
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