linux-kernel - Re: Performance regression in ip_set

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Date: Wed, 10 Jan 2024 19:30:32 +0800 (CST)
From: "David Wang" <00107082@....com>
To: "Jozsef Kadlecsik" <kadlec@...filter.org>
Cc: ale.crismani@...omattic.com, xiaolinkui@...inos.cn, pablo@...filter.org, 
	linux-kernel@...r.kernel.org, netfilter-devel@...r.kernel.org
Subject: Re: Performance regression in ip_set_swap on 6.1.69



At 2024-01-10 19:05:18, "David Wang" <00107082@....com> wrote:
>
>
>My test code is as following, it would stress swapping ipset 'foo' with 'bar'; (foo/bar ipset needs to be created before the test.)
>With latest 6.7, the stress would take about 180 seconds to finish, but with `synchronize_rcu` removed, it only took 3seconds.

Correction,  with 'synchronize_rcu' removed, it only took about 0.03 seconds
>
>
>David