From: Florian Westphal <fw@strlen•de>
To: Prasanna Panchamukhi <panchamukhi@arista•com>
Cc: netfilter-devel@vger•kernel.org,
"David S. Miller" <davem@davemloft•net>,
Eric Dumazet <edumazet@google•com>,
Jakub Kicinski <kuba@kernel•org>, Paolo Abeni <pabeni@redhat•com>,
Simon Horman <horms@kernel•org>, Jonathan Corbet <corbet@lwn•net>,
Shuah Khan <skhan@linuxfoundation•org>,
Pablo Neira Ayuso <pablo@netfilter•org>,
Phil Sutter <phil@nwl•cc>,
netdev@vger•kernel.org, linux-doc@vger•kernel.org,
linux-kernel@vger•kernel.org, coreteam@netfilter•org
Subject: Re: [PATCH net-next] netfilter: conntrack: expose gc_scan_interval_max via sysctl
Date: Fri, 13 Mar 2026 00:10:23 +0100 [thread overview]
Message-ID: <abNH3xxxAU7U4zz5@strlen.de> (raw)
In-Reply-To: <CACqWiXD2_O32K4NhmNBZrAUG7U9-N93LTFjJHG6Tq=4vuafNuA@mail.gmail.com>
Prasanna Panchamukhi <panchamukhi@arista•com> wrote:
> Our primary goal is to cap the maximum time taken by the GC to clean
> up expired entries. We rely on user-space notifications to clean up
> these entries from the hardware, so ensuring a predictable upper bound
> is important for our use case.
Sure, but why can't we try to give a better default behavior?
while true; conntrack -L >/dev/null;done
basically does what you want already (but in a dumb way).
> Regarding the adaptive strategy, we are using this sysctl to address
> environments where the current average-based calculation delays the
> cleanup of short-lived entries.
Yes, and I did propose to adapt the existing strategy to provide more
timely notifications.
prev parent reply other threads:[~2026-03-12 23:10 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-11 19:40 [PATCH net-next] netfilter: conntrack: expose gc_scan_interval_max via sysctl Prasanna S Panchamukhi
2026-03-12 12:12 ` Fernando Fernandez Mancera
2026-03-12 12:15 ` Fernando Fernandez Mancera
2026-03-12 21:44 ` Prasanna Panchamukhi
2026-03-12 12:36 ` Florian Westphal
2026-03-12 22:31 ` Prasanna Panchamukhi
2026-03-12 22:42 ` Pablo Neira Ayuso
2026-03-12 23:10 ` Florian Westphal [this message]
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