Commit Graph

11 Commits (ab7749aed7ba40f52108c1cb6d2ae64cb8314dff)

Author SHA1 Message Date
David Anderson 6afffece8a net/art: use more intelligible, go-ish state tracking in table.Get
Updates #7781

Signed-off-by: David Anderson <danderson@tailscale.com>
1 year ago
David Anderson 4f14ed2ad6 net/art: use encoding/binary for address bit twiddling
Updates #7781

Signed-off-by: David Anderson <danderson@tailscale.com>
1 year ago
David Anderson f1cd67488d net/art: move slice closer to its use
Updates #7781

Signed-off-by: David Anderson <danderson@tailscale.com>
1 year ago
David Anderson 44ad7b3746 net/art: factor out picking the right strideTable for addr family
Updates #7781

Signed-off-by: David Anderson <danderson@tailscale.com>
1 year ago
David Anderson 125b982ba5 net/art: make Table.Get alloc-free
Updates #7781

Signed-off-by: David Anderson <danderson@tailscale.com>
1 year ago
David Anderson 8478358d77 net/art: use "index", not "idx" in function names
Updates #7781

Signed-off-by: David Anderson <danderson@tailscale.com>
1 year ago
David Anderson 736a44264f net/art: fix comment typo
Updates #7781

Signed-off-by: David Anderson <danderson@tailscale.com>
1 year ago
David Anderson fcf4d044fa net/art: implement path compression optimization
Updates #7781

Signed-off-by: David Anderson <danderson@tailscale.com>
1 year ago
David Anderson 486195edf0 net/art: make each strideTable track the IP prefix it represents
This is a prerequisite for path compression, so that insert/delete
can determine when compression occurred.

Updates #7781

Signed-off-by: David Anderson <danderson@tailscale.com>
1 year ago
David Anderson a7c910e361 net/art: implement the Table type, a multi-level art route table.
Updates #7781

                           │    sec/op     │
TableInsertion/ipv4/10       1.562µ ±   2%
TableInsertion/ipv4/100      2.398µ ±   5%
TableInsertion/ipv4/1000     2.097µ ±   3%
TableInsertion/ipv4/10000    2.756µ ±   4%
TableInsertion/ipv4/100000   2.473µ ±  13%
TableInsertion/ipv6/10       7.649µ ±   2%
TableInsertion/ipv6/100      12.09µ ±   3%
TableInsertion/ipv6/1000     14.84µ ±   5%
TableInsertion/ipv6/10000    14.72µ ±   8%
TableInsertion/ipv6/100000   13.23µ ±  41%
TableDelete/ipv4/10          378.4n ±   5%
TableDelete/ipv4/100         366.9n ±   3%
TableDelete/ipv4/1000        418.6n ±   3%
TableDelete/ipv4/10000       609.2n ±  11%
TableDelete/ipv4/100000      679.2n ±  28%
TableDelete/ipv6/10          504.2n ±   4%
TableDelete/ipv6/100         959.5n ±  12%
TableDelete/ipv6/1000        1.436µ ±   6%
TableDelete/ipv6/10000       1.772µ ±  15%
TableDelete/ipv6/100000      1.172µ ± 113%
TableGet/ipv4/10             32.14n ±  11%
TableGet/ipv4/100            38.58n ±   2%
TableGet/ipv4/1000           45.03n ±   2%
TableGet/ipv4/10000          52.90n ±   7%
TableGet/ipv4/100000         135.2n ±  11%
TableGet/ipv6/10             41.55n ±   1%
TableGet/ipv6/100            44.78n ±   2%
TableGet/ipv6/1000           49.03n ±   2%
TableGet/ipv6/10000          65.38n ±   5%
TableGet/ipv6/100000         525.0n ±  39%

                           │   avg-B/op   │
TableInsertion/ipv4/10       25.18Ki ± 0%
TableInsertion/ipv4/100      17.63Ki ± 0%
TableInsertion/ipv4/1000     14.14Ki ± 0%
TableInsertion/ipv4/10000    12.92Ki ± 0%
TableInsertion/ipv4/100000   11.13Ki ± 0%
TableInsertion/ipv6/10       76.87Ki ± 0%
TableInsertion/ipv6/100      98.33Ki ± 0%
TableInsertion/ipv6/1000     91.44Ki ± 0%
TableInsertion/ipv6/10000    90.39Ki ± 0%
TableInsertion/ipv6/100000   87.19Ki ± 0%
TableDelete/ipv4/10            3.230 ± 0%
TableDelete/ipv4/100           4.020 ± 0%
TableDelete/ipv4/1000          3.990 ± 0%
TableDelete/ipv4/10000         4.000 ± 0%
TableDelete/ipv4/100000        4.000 ± 0%
TableDelete/ipv6/10            16.00 ± 0%
TableDelete/ipv6/100           16.00 ± 0%
TableDelete/ipv6/1000          16.00 ± 0%
TableDelete/ipv6/10000         16.00 ± 0%
TableDelete/ipv6/100000        16.00 ± 0%

                           │ avg-allocs/op │
TableInsertion/ipv4/10          2.900 ± 0%
TableInsertion/ipv4/100         2.330 ± 0%
TableInsertion/ipv4/1000        2.070 ± 0%
TableInsertion/ipv4/10000       1.980 ± 0%
TableInsertion/ipv4/100000      1.840 ± 0%
TableInsertion/ipv6/10          6.800 ± 0%
TableInsertion/ipv6/100         8.420 ± 0%
TableInsertion/ipv6/1000        7.900 ± 0%
TableInsertion/ipv6/10000       7.820 ± 0%
TableInsertion/ipv6/100000      7.580 ± 0%
TableDelete/ipv4/10             1.000 ± 0%
TableDelete/ipv4/100            1.000 ± 0%
TableDelete/ipv4/1000           1.000 ± 0%
TableDelete/ipv4/10000          1.000 ± 0%
TableDelete/ipv4/100000         1.000 ± 0%
TableDelete/ipv6/10             1.000 ± 0%
TableDelete/ipv6/100            1.000 ± 0%
TableDelete/ipv6/1000           1.000 ± 0%
TableDelete/ipv6/10000          1.000 ± 0%
TableDelete/ipv6/100000         1.000 ± 0%

                           │   routes/s   │
TableInsertion/ipv4/10       640.3k ±  2%
TableInsertion/ipv4/100      417.1k ±  5%
TableInsertion/ipv4/1000     477.0k ±  3%
TableInsertion/ipv4/10000    362.8k ±  5%
TableInsertion/ipv4/100000   404.5k ± 15%
TableInsertion/ipv6/10       130.7k ±  1%
TableInsertion/ipv6/100      82.69k ±  3%
TableInsertion/ipv6/1000     67.37k ±  5%
TableInsertion/ipv6/10000    67.93k ±  9%
TableInsertion/ipv6/100000   75.63k ± 29%
TableDelete/ipv4/10          2.642M ±  6%
TableDelete/ipv4/100         2.726M ±  3%
TableDelete/ipv4/1000        2.389M ±  3%
TableDelete/ipv4/10000       1.641M ± 12%
TableDelete/ipv4/100000      1.472M ± 27%
TableDelete/ipv6/10          1.984M ±  4%
TableDelete/ipv6/100         1.042M ± 11%
TableDelete/ipv6/1000        696.5k ±  6%
TableDelete/ipv6/10000       564.4k ± 13%
TableDelete/ipv6/100000      853.6k ± 53%

                     │   addrs/s    │
TableGet/ipv4/10       31.11M ± 10%
TableGet/ipv4/100      25.92M ±  2%
TableGet/ipv4/1000     22.21M ±  2%
TableGet/ipv4/10000    18.91M ±  8%
TableGet/ipv4/100000   7.397M ± 12%
TableGet/ipv6/10       24.07M ±  1%
TableGet/ipv6/100      22.33M ±  2%
TableGet/ipv6/1000     20.40M ±  2%
TableGet/ipv6/10000    15.30M ±  5%
TableGet/ipv6/100000   1.905M ± 28%

                     │    B/op    │
TableGet/ipv4/10       4.000 ± 0%
TableGet/ipv4/100      4.000 ± 0%
TableGet/ipv4/1000     4.000 ± 0%
TableGet/ipv4/10000    4.000 ± 0%
TableGet/ipv4/100000   4.000 ± 0%
TableGet/ipv6/10       16.00 ± 0%
TableGet/ipv6/100      16.00 ± 0%
TableGet/ipv6/1000     16.00 ± 0%
TableGet/ipv6/10000    16.00 ± 0%
TableGet/ipv6/100000   16.00 ± 0%

                     │ allocs/op  │
TableGet/ipv4/10       1.000 ± 0%
TableGet/ipv4/100      1.000 ± 0%
TableGet/ipv4/1000     1.000 ± 0%
TableGet/ipv4/10000    1.000 ± 0%
TableGet/ipv4/100000   1.000 ± 0%
TableGet/ipv6/10       1.000 ± 0%
TableGet/ipv6/100      1.000 ± 0%
TableGet/ipv6/1000     1.000 ± 0%
TableGet/ipv6/10000    1.000 ± 0%
TableGet/ipv6/100000   1.000 ± 0%

Signed-off-by: David Anderson <danderson@tailscale.com>
2 years ago
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>
2 years ago