Commit Graph

7 Commits (1f12b3aedc63fb1da07b8f604dd563fd58722dde)

Author SHA1 Message Date
David Anderson e92adfe5e4 net/art: allow non-pointers as values
Values are still turned into pointers internally to maintain the
invariants of strideTable, but from the user's perspective it's
now possible to tbl.Insert(pfx, true) rather than
tbl.Insert(pfx, ptr.To(true)).

Updates #7781

Signed-off-by: David Anderson <danderson@tailscale.com>
1 year ago
David Anderson 623d72c83b net/art: move child table pointers out of strideEntry
In preparation for a different refactor, but incidentally also saves
10-25% memory on overall table size in benchmarks.

Updates #7781

Signed-off-by: David Anderson <danderson@tailscale.com>
1 year ago
David Anderson 1e6f0bb608 net/art: fix slowPrefixTable bugs found by fuzzing
One is a straight "I forgot how to Go" bug, the others are semantic
mismatches with the main implementation around masking the prefixes
passed to insert/delete.

Updates #7781

Signed-off-by: David Anderson <danderson@tailscale.com>
1 year ago
David Anderson aaca911904 net/art: add another consistency test for insert/delete
Updates #7781

Signed-off-by: David Anderson <danderson@tailscale.com>
1 year ago
David Anderson b145a22f55 net/art: add more exhaustive table testing
Updates #7781

Signed-off-by: David Anderson <danderson@tailscale.com>
1 year ago
David Anderson a5fd51ebdc net/art: disable the IPv6 100k routes benchmark.
At the current unoptimized memory utilization of the various data structures,
100k IPv6 routes consumes in the ballpark of 3-4GiB, which risks OOMing our
386 test machine.

Until we have the optimizations to (drastically) reduce that consumption,
skip the test that bloats too much for 32-bit machines.

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