Bug#1111052: Please increase default UDP buffer size limits

From	Josh Triplett <josh@joshtriplett.org>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#1111052: Please increase default UDP buffer size limits
Date	2025-08-14 05:20 +0200
Message-ID	<LjwFr-7sTy-1@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

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Package: linux-sysctl-defaults
Version: 4.14
Severity: wishlist
File: /usr/lib/sysctl.d/50-default.conf
X-Debbugs-Cc: josh@joshtriplett.org

Current uses of QUIC benefit from higher buffer size limits. Please
consider setting:

net.core.rmem_max = 7500000
net.core.wmem_max = 7500000

See https://github.com/quic-go/quic-go/wiki/UDP-Buffer-Sizes


-- System Information:
Debian Release: forky/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: arm64

Kernel: Linux 6.16-amd64 (SMP w/12 CPU threads; PREEMPT)
Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)

-- no debconf information

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Bug#1111052: Please increase default UDP buffer size limits Josh Triplett <josh@joshtriplett.org> - 2025-08-14 05:20 +0200
  Processed: Re: Please increase default UDP buffer size limits "Debian Bug Tracking System" <owner@bugs.debian.org> - 2025-08-20 20:20 +0200
  Bug#1111052: Please increase default UDP buffer size limits Ben Hutchings <ben@decadent.org.uk> - 2025-08-20 20:20 +0200
  Bug#1111052: Backport upstream patch? Josh Triplett <josh@joshtriplett.org> - 2025-10-06 22:50 +0200
    Bug#1111657: Bug#1111052: Backport upstream patch? Salvatore Bonaccorso <carnil@debian.org> - 2025-10-13 08:40 +0200

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