Andrea Gottardo 810c84b659 logtail: remove LowMemory mode
Fixes tailscale/tailscale#13685

logtail currently has a LowMemory flag, which is enabled upon initialization on memory-constrained platforms like iOS. This flag reduces the ring buffer size from 256 log lines to 64. It was introduced over four years ago, back when Tailscale supported iOS 14 and earlier, where network extensions were limited to 15 MB of RAM.

Since the memory limit has now increased to 50 MB on all supported iOS versions (with our minimum requirement being iOS 15.0), the need to conserve a few kilobytes of RAM by reducing buffer entries and the size of each flush is minimal.

The additional code paths are more things we need to maintain over time... with little benefit. This PR removes that.

To be merged after we cut the first 1.77 unstable, as this might be a risky change.

Signed-off-by: Andrea Gottardo <andrea@gottardo.me>
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Tailscale

https://tailscale.com

Private WireGuard® networks made easy

Overview

This repository contains the majority of Tailscale's open source code. Notably, it includes the tailscaled daemon and the tailscale CLI tool. The tailscaled daemon runs on Linux, Windows, macOS, and to varying degrees on FreeBSD and OpenBSD. The Tailscale iOS and Android apps use this repo's code, but this repo doesn't contain the mobile GUI code.

Other Tailscale repos of note:

For background on which parts of Tailscale are open source and why, see https://tailscale.com/opensource/.

Using

We serve packages for a variety of distros and platforms at https://pkgs.tailscale.com.

Other clients

The macOS, iOS, and Windows clients use the code in this repository but additionally include small GUI wrappers. The GUI wrappers on non-open source platforms are themselves not open source.

Building

We always require the latest Go release, currently Go 1.23. (While we build releases with our Go fork, its use is not required.)

go install tailscale.com/cmd/tailscale{,d}

If you're packaging Tailscale for distribution, use build_dist.sh instead, to burn commit IDs and version info into the binaries:

./build_dist.sh tailscale.com/cmd/tailscale
./build_dist.sh tailscale.com/cmd/tailscaled

If your distro has conventions that preclude the use of build_dist.sh, please do the equivalent of what it does in your distro's way, so that bug reports contain useful version information.

Bugs

Please file any issues about this code or the hosted service on the issue tracker.

Contributing

PRs welcome! But please file bugs. Commit messages should reference bugs.

We require Developer Certificate of Origin Signed-off-by lines in commits.

See git log for our commit message style. It's basically the same as Go's style.

About Us

Tailscale is primarily developed by the people at https://github.com/orgs/tailscale/people. For other contributors, see:

WireGuard is a registered trademark of Jason A. Donenfeld.

Description
The easiest, most secure way to use WireGuard and 2FA.
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