David Anderson 4d1b3bc26f net/art: implement the stride table building block of ART
A stride table is an 8-bit routing table implemented as an array binary
tree, with a special tree updating function (allot) that enables lightning
fast address lookups and reasonably fast insertion and deletion.

Insertion, deletion and lookup are all allocation-free.

Updates #7781

                                        │    sec/op    │
StrideTableInsertion/10/random_order       16.79n ± 2%
StrideTableInsertion/10/largest_first      16.83n ± 1%
StrideTableInsertion/10/smallest_first     16.83n ± 0%
StrideTableInsertion/50/random_order       17.84n ± 1%
StrideTableInsertion/50/largest_first      20.04n ± 1%
StrideTableInsertion/50/smallest_first     16.39n ± 0%
StrideTableInsertion/100/random_order      14.63n ± 0%
StrideTableInsertion/100/largest_first     17.45n ± 4%
StrideTableInsertion/100/smallest_first    12.98n ± 0%
StrideTableInsertion/200/random_order      12.51n ± 4%
StrideTableInsertion/200/largest_first     18.36n ± 3%
StrideTableInsertion/200/smallest_first    9.609n ± 3%
StrideTableDeletion/10/random_order        19.50n ± 1%
StrideTableDeletion/10/largest_first       19.34n ± 0%
StrideTableDeletion/10/smallest_first      19.43n ± 0%
StrideTableDeletion/50/random_order        14.58n ± 1%
StrideTableDeletion/50/largest_first       14.27n ± 2%
StrideTableDeletion/50/smallest_first      15.51n ± 0%
StrideTableDeletion/100/random_order       12.02n ± 3%
StrideTableDeletion/100/largest_first      10.64n ± 0%
StrideTableDeletion/100/smallest_first     13.21n ± 3%
StrideTableDeletion/200/random_order       14.05n ± 4%
StrideTableDeletion/200/largest_first      9.288n ± 5%
StrideTableDeletion/200/smallest_first     18.51n ± 1%
StrideTableGet                            0.5010n ± 0%

                                        │  routes/s   │
StrideTableInsertion/10/random_order      59.55M ± 2%
StrideTableInsertion/10/largest_first     59.42M ± 1%
StrideTableInsertion/10/smallest_first    59.43M ± 0%
StrideTableInsertion/50/random_order      56.04M ± 1%
StrideTableInsertion/50/largest_first     49.91M ± 1%
StrideTableInsertion/50/smallest_first    61.00M ± 0%
StrideTableInsertion/100/random_order     68.35M ± 0%
StrideTableInsertion/100/largest_first    57.32M ± 3%
StrideTableInsertion/100/smallest_first   77.06M ± 0%
StrideTableInsertion/200/random_order     79.93M ± 4%
StrideTableInsertion/200/largest_first    54.47M ± 3%
StrideTableInsertion/200/smallest_first   104.1M ± 3%
StrideTableDeletion/10/random_order       51.28M ± 1%
StrideTableDeletion/10/largest_first      51.70M ± 0%
StrideTableDeletion/10/smallest_first     51.48M ± 0%
StrideTableDeletion/50/random_order       68.60M ± 1%
StrideTableDeletion/50/largest_first      70.09M ± 2%
StrideTableDeletion/50/smallest_first     64.45M ± 0%
StrideTableDeletion/100/random_order      83.21M ± 3%
StrideTableDeletion/100/largest_first     94.03M ± 0%
StrideTableDeletion/100/smallest_first    75.69M ± 3%
StrideTableDeletion/200/random_order      71.20M ± 5%
StrideTableDeletion/200/largest_first     107.7M ± 5%
StrideTableDeletion/200/smallest_first    54.02M ± 1%
StrideTableGet                            1.996G ± 0%

Signed-off-by: David Anderson <danderson@tailscale.com>
2023-04-04 09:00:24 -07:00
2023-03-03 10:09:26 -10:00
2023-03-09 11:13:09 -08:00
2023-03-04 12:24:55 -08:00
2023-03-02 17:20:45 -08:00
2023-02-14 00:59:09 +00:00
2020-02-10 22:16:30 -08:00
2023-02-14 00:59:09 +00:00
2023-02-16 22:39:09 +00:00
2023-03-14 13:50:57 -07:00

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 1.20. (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.

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