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feat(rust): avoiding memory fragmentation by reducing allocations #8640

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@davide-baldo davide-baldo commented Nov 14, 2024

This PR addresses the memory fragmentation from two sides, first many mini-allocations are avoided, mostly around Route, but also avoiding extra unused allocation in .ok_else(XXX).
Then, to reduce the allocation of big chunks of memory, the implementations/rust/ockam/ockam_core/src/buffer_pool.rs was used to pool the buffers. To improve the benefits, the payload size was also increased to 96KB. This also means that the minimum bandwidth for a stable portal is 1Mbits.
This combined helps reduce the fragmentation issue and stabilize the overall throughput by a lot.

BEFORE:

[  5] local 127.0.0.1 port 57051 connected to 127.0.0.1 port 8200
[  5] local 127.0.0.1 port 5500 connected to 127.0.0.1 port 57052
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-1.00   sec  1.89 GBytes  16.1 Gbits/sec
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-1.01   sec  1.89 GBytes  16.1 Gbits/sec
[  5]   1.01-2.01   sec  1.94 GBytes  16.7 Gbits/sec
[  5]   1.00-2.01   sec  1.94 GBytes  16.7 Gbits/sec
[  5]   2.01-3.00   sec  1.93 GBytes  16.6 Gbits/sec
[  5]   2.01-3.00   sec  1.93 GBytes  16.6 Gbits/sec
[  5]   3.00-4.01   sec  1.81 GBytes  15.6 Gbits/sec
[  5]   3.00-4.01   sec  1.81 GBytes  15.6 Gbits/sec
[  5]   4.01-5.00   sec  1.98 GBytes  17.1 Gbits/sec
[  5]   4.01-5.00   sec  1.98 GBytes  17.1 Gbits/sec
[  5]   5.00-6.01   sec  1.94 GBytes  16.6 Gbits/sec
[  5]   5.00-6.01   sec  1.94 GBytes  16.6 Gbits/sec
[  5]   6.01-7.00   sec  1.97 GBytes  17.0 Gbits/sec
[  5]   6.01-7.00   sec  1.97 GBytes  17.0 Gbits/sec
[  5]   7.00-8.01   sec  1.99 GBytes  17.0 Gbits/sec
[  5]   7.00-8.01   sec  1.99 GBytes  17.0 Gbits/sec
[  5]   8.01-9.00   sec  1.75 GBytes  15.1 Gbits/sec
[  5]   8.01-9.01   sec  1.76 GBytes  15.1 Gbits/sec
[  5]   9.01-10.00  sec  1.87 GBytes  16.1 Gbits/sec
[  5]   9.00-10.00  sec  1.88 GBytes  16.1 Gbits/sec
[  5]  10.00-11.01  sec  1.90 GBytes  16.3 Gbits/sec
[  5]  10.00-11.01  sec  1.90 GBytes  16.3 Gbits/sec
[  5]  11.01-12.00  sec  1.91 GBytes  16.5 Gbits/sec
[  5]  11.01-12.01  sec  1.92 GBytes  16.5 Gbits/sec
[  5]  12.00-13.01  sec  1.95 GBytes  16.6 Gbits/sec
[  5]  12.01-13.01  sec  1.94 GBytes  16.6 Gbits/sec
[  5]  13.01-14.00  sec  1.61 GBytes  13.9 Gbits/sec
[  5]  13.01-14.01  sec  1.61 GBytes  13.9 Gbits/sec
[  5]  14.01-15.00  sec  1.81 GBytes  15.5 Gbits/sec
[  5]  14.00-15.01  sec  1.81 GBytes  15.5 Gbits/sec
[  5]  15.01-16.01  sec  1.86 GBytes  16.0 Gbits/sec
[  5]  15.00-16.01  sec  1.87 GBytes  16.0 Gbits/sec
[  5]  16.01-17.00  sec  1.92 GBytes  16.6 Gbits/sec
[  5]  16.01-17.00  sec  1.92 GBytes  16.6 Gbits/sec
[  5]  17.00-18.00  sec  1.95 GBytes  16.7 Gbits/sec
[  5]  17.00-18.00  sec  1.95 GBytes  16.7 Gbits/sec
[  5]  18.00-19.01  sec  1.82 GBytes  15.6 Gbits/sec
[  5]  18.00-19.01  sec  1.82 GBytes  15.6 Gbits/sec
[  5]  19.01-20.00  sec  1.73 GBytes  14.9 Gbits/sec
[  5]  19.01-20.00  sec  1.73 GBytes  14.9 Gbits/sec
[  5]  20.00-21.01  sec  1.76 GBytes  15.1 Gbits/sec
[  5]  20.00-21.01  sec  1.76 GBytes  15.1 Gbits/sec
[  5]  21.01-22.01  sec  1.85 GBytes  15.9 Gbits/sec
[  5]  21.01-22.00  sec  1.85 GBytes  15.9 Gbits/sec
[  5]  22.01-23.00  sec  1.85 GBytes  15.9 Gbits/sec
[  5]  22.00-23.01  sec  1.85 GBytes  15.9 Gbits/sec
[  5]  23.00-24.00  sec  1.66 GBytes  14.3 Gbits/sec
[  5]  23.01-24.00  sec  1.66 GBytes  14.3 Gbits/sec
[  5]  24.00-25.00  sec  1.24 GBytes  10.7 Gbits/sec
[  5]  24.00-25.01  sec  1.25 GBytes  10.7 Gbits/sec
[  5]  25.01-26.00  sec   774 MBytes  6.53 Gbits/sec
[  5]  25.00-26.01  sec   778 MBytes  6.50 Gbits/sec
[  5]  26.01-27.00  sec  1001 MBytes  8.45 Gbits/sec
[  5]  26.00-27.01  sec  1008 MBytes  8.42 Gbits/sec
[  5]  27.00-28.00  sec  1.18 GBytes  10.1 Gbits/sec
[  5]  27.01-28.00  sec  1.17 GBytes  10.1 Gbits/sec
[  5]  28.00-29.00  sec  1.12 GBytes  9.63 Gbits/sec
[  5]  28.00-29.01  sec  1.13 GBytes  9.64 Gbits/sec
[  5]  29.01-30.00  sec  1.11 GBytes  9.52 Gbits/sec
[  5]  29.00-30.01  sec  1.11 GBytes  9.52 Gbits/sec
[  5]  30.01-31.00  sec   720 MBytes  6.07 Gbits/sec
[  5]  30.00-31.00  sec   726 MBytes  6.08 Gbits/sec
[  5]  31.00-32.00  sec  1.35 GBytes  11.6 Gbits/sec
[  5]  31.00-32.01  sec  1.35 GBytes  11.6 Gbits/sec
[  5]  32.01-33.00  sec  1.43 GBytes  12.3 Gbits/sec
[  5]  32.00-33.01  sec  1.44 GBytes  12.3 Gbits/sec
[  5]  33.01-34.00  sec  1.43 GBytes  12.3 Gbits/sec
[  5]  33.00-34.01  sec  1.43 GBytes  12.3 Gbits/sec
[  5]  34.01-35.01  sec  1.33 GBytes  11.4 Gbits/sec
[  5]  34.00-35.01  sec  1.33 GBytes  11.4 Gbits/sec
[  5]  35.01-36.01  sec  1.41 GBytes  12.1 Gbits/sec
[  5]  35.01-36.01  sec  1.41 GBytes  12.1 Gbits/sec
[  5]  36.01-37.01  sec  1.54 GBytes  13.2 Gbits/sec
[  5]  36.01-37.01  sec  1.53 GBytes  13.2 Gbits/sec
[  5]  37.01-38.00  sec  1.63 GBytes  14.0 Gbits/sec
[  5]  37.01-38.01  sec  1.63 GBytes  14.0 Gbits/sec
[  5]  38.00-39.00  sec  1.78 GBytes  15.3 Gbits/sec
[  5]  38.01-39.01  sec  1.79 GBytes  15.3 Gbits/sec
[  5]  39.00-40.00  sec  1.66 GBytes  14.2 Gbits/sec
[  5]  39.01-40.01  sec  1.65 GBytes  14.2 Gbits/sec
[  5]  40.00-41.00  sec  1.61 GBytes  13.8 Gbits/sec
[  5]  40.01-41.01  sec  1.61 GBytes  13.8 Gbits/sec
[  5]  41.01-42.01  sec  1.73 GBytes  14.9 Gbits/sec
[  5]  41.00-42.01  sec  1.74 GBytes  14.9 Gbits/sec
[  5]  42.01-43.00  sec  2.00 GBytes  17.2 Gbits/sec
[  5]  42.01-43.00  sec  2.00 GBytes  17.2 Gbits/sec
[  5]  43.00-44.01  sec  1.91 GBytes  16.3 Gbits/sec
[  5]  43.00-44.01  sec  1.91 GBytes  16.3 Gbits/sec
[  5]  44.01-45.01  sec  1.99 GBytes  17.1 Gbits/sec
[  5]  44.01-45.01  sec  1.99 GBytes  17.1 Gbits/sec
[  5]  45.01-46.00  sec  1.99 GBytes  17.2 Gbits/sec
[  5]  45.01-46.00  sec  2.00 GBytes  17.2 Gbits/sec
[  5]  46.00-47.01  sec  1.95 GBytes  16.7 Gbits/sec
[  5]  46.00-47.01  sec  1.96 GBytes  16.7 Gbits/sec
[  5]  47.01-48.00  sec  2.00 GBytes  17.2 Gbits/sec
[  5]  47.01-48.00  sec  2.00 GBytes  17.2 Gbits/sec
[  5]  48.00-49.01  sec  1.99 GBytes  17.1 Gbits/sec
[  5]  48.00-49.00  sec  1.99 GBytes  17.1 Gbits/sec
[  5]  49.01-50.00  sec  1.90 GBytes  16.4 Gbits/sec
[  5]  49.00-50.00  sec  1.90 GBytes  16.3 Gbits/sec
[  5]  50.00-51.01  sec  1.93 GBytes  16.6 Gbits/sec
[  5]  50.00-51.01  sec  1.93 GBytes  16.6 Gbits/sec
[  5]  51.01-52.00  sec  1.99 GBytes  17.2 Gbits/sec
[  5]  51.01-52.00  sec  2.00 GBytes  17.2 Gbits/sec
[  5]  52.00-53.00  sec  1.62 GBytes  13.9 Gbits/sec
[  5]  52.00-53.00  sec  1.61 GBytes  13.9 Gbits/sec
[  5]  53.00-54.00  sec  1.68 GBytes  14.4 Gbits/sec
[  5]  53.00-54.00  sec  1.68 GBytes  14.4 Gbits/sec
[  5]  54.00-55.00  sec  1.29 GBytes  11.1 Gbits/sec
[  5]  54.00-55.00  sec  1.29 GBytes  11.1 Gbits/sec
[  5]  55.00-56.00  sec  1.27 GBytes  10.9 Gbits/sec
[  5]  55.00-56.01  sec  1.27 GBytes  10.9 Gbits/sec
[  5]  56.01-57.00  sec  1.39 GBytes  11.9 Gbits/sec
[  5]  56.00-57.01  sec  1.39 GBytes  11.9 Gbits/sec
[  5]  57.01-58.01  sec   804 MBytes  6.75 Gbits/sec
[  5]  57.00-58.01  sec   804 MBytes  6.74 Gbits/sec
[  5]  58.01-59.00  sec  1.02 GBytes  8.79 Gbits/sec
[  5]  58.01-59.01  sec  1.02 GBytes  8.79 Gbits/sec
[  5]  59.00-60.00  sec  1.50 GBytes  12.8 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-60.00  sec  98.9 GBytes  14.2 Gbits/sec                  receiver
[  5]  59.01-60.00  sec  1.49 GBytes  12.8 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-60.00  sec  98.9 GBytes  14.2 Gbits/sec                  sender
[  5]   0.00-60.00  sec  98.9 GBytes  14.2 Gbits/sec                  receiver

AFTER:

[ ID] Interval           Transfer     Bitrate
[  5]   0.00-1.00   sec  2.36 GBytes  20.1 Gbits/sec
[  5]   0.00-1.01   sec  2.35 GBytes  20.1 Gbits/sec
[  5]   1.00-2.00   sec  2.35 GBytes  20.2 Gbits/sec
[  5]   1.01-2.01   sec  2.36 GBytes  20.2 Gbits/sec
[  5]   2.01-3.01   sec  2.35 GBytes  20.2 Gbits/sec
[  5]   2.00-3.00   sec  2.36 GBytes  20.2 Gbits/sec
[  5]   3.01-4.00   sec  2.40 GBytes  20.6 Gbits/sec
[  5]   3.00-4.00   sec  2.40 GBytes  20.6 Gbits/sec
[  5]   4.00-5.01   sec  2.44 GBytes  20.9 Gbits/sec
[  5]   4.00-5.00   sec  2.44 GBytes  20.9 Gbits/sec
[  5]   5.01-6.01   sec  2.34 GBytes  20.1 Gbits/sec
[  5]   5.00-6.01   sec  2.34 GBytes  20.1 Gbits/sec
[  5]   6.01-7.00   sec  2.41 GBytes  20.8 Gbits/sec
[  5]   6.01-7.01   sec  2.42 GBytes  20.8 Gbits/sec
[  5]   7.00-8.00   sec  2.40 GBytes  20.6 Gbits/sec
[  5]   7.01-8.01   sec  2.41 GBytes  20.7 Gbits/sec
[  5]   8.01-9.00   sec  2.37 GBytes  20.3 Gbits/sec
[  5]   8.00-9.01   sec  2.38 GBytes  20.3 Gbits/sec
[  5]   9.01-10.01  sec  2.38 GBytes  20.5 Gbits/sec
[  5]   9.00-10.00  sec  2.38 GBytes  20.5 Gbits/sec
[  5]  10.01-11.00  sec  2.46 GBytes  21.2 Gbits/sec
[  5]  10.00-11.00  sec  2.47 GBytes  21.2 Gbits/sec
[  5]  11.00-12.01  sec  2.39 GBytes  20.5 Gbits/sec
[  5]  11.00-12.00  sec  2.39 GBytes  20.5 Gbits/sec
[  5]  12.01-13.00  sec  2.44 GBytes  21.0 Gbits/sec
[  5]  12.00-13.01  sec  2.45 GBytes  21.0 Gbits/sec
[  5]  13.01-14.00  sec  2.45 GBytes  21.1 Gbits/sec
[  5]  13.00-14.00  sec  2.46 GBytes  21.1 Gbits/sec
[  5]  14.00-15.01  sec  2.41 GBytes  20.7 Gbits/sec
[  5]  14.00-15.01  sec  2.41 GBytes  20.7 Gbits/sec
[  5]  15.01-16.00  sec  2.46 GBytes  21.2 Gbits/sec
[  5]  15.01-16.01  sec  2.46 GBytes  21.2 Gbits/sec
[  5]  16.00-17.01  sec  2.42 GBytes  20.8 Gbits/sec
[  5]  16.01-17.01  sec  2.42 GBytes  20.8 Gbits/sec
[  5]  17.01-18.00  sec  2.42 GBytes  20.8 Gbits/sec
[  5]  17.01-18.00  sec  2.42 GBytes  20.8 Gbits/sec
[  5]  18.00-19.00  sec  2.46 GBytes  21.1 Gbits/sec
[  5]  18.00-19.00  sec  2.46 GBytes  21.1 Gbits/sec
[  5]  19.00-20.01  sec  2.43 GBytes  20.8 Gbits/sec
[  5]  19.00-20.01  sec  2.43 GBytes  20.8 Gbits/sec
[  5]  20.01-21.00  sec  2.44 GBytes  21.0 Gbits/sec
[  5]  20.01-21.01  sec  2.44 GBytes  21.0 Gbits/sec
[  5]  21.01-22.01  sec  2.44 GBytes  20.9 Gbits/sec
[  5]  21.00-22.01  sec  2.44 GBytes  20.9 Gbits/sec
[  5]  22.01-23.00  sec  2.42 GBytes  20.9 Gbits/sec
[  5]  22.01-23.01  sec  2.43 GBytes  20.9 Gbits/sec
[  5]  23.00-24.01  sec  2.45 GBytes  21.0 Gbits/sec
[  5]  23.01-24.01  sec  2.44 GBytes  21.0 Gbits/sec
[  5]  24.01-25.00  sec  2.46 GBytes  21.2 Gbits/sec
[  5]  24.01-25.01  sec  2.46 GBytes  21.2 Gbits/sec
[  5]  25.01-26.00  sec  2.44 GBytes  21.0 Gbits/sec
[  5]  25.00-26.01  sec  2.45 GBytes  21.0 Gbits/sec
[  5]  26.00-27.01  sec  2.38 GBytes  20.5 Gbits/sec
[  5]  26.01-27.01  sec  2.38 GBytes  20.5 Gbits/sec
[  5]  27.01-28.01  sec  2.46 GBytes  21.1 Gbits/sec
[  5]  27.01-28.01  sec  2.46 GBytes  21.1 Gbits/sec
[  5]  28.01-29.01  sec  2.39 GBytes  20.5 Gbits/sec
[  5]  28.01-29.01  sec  2.39 GBytes  20.5 Gbits/sec
[  5]  29.01-30.00  sec  2.45 GBytes  21.1 Gbits/sec
[  5]  29.01-30.00  sec  2.45 GBytes  21.1 Gbits/sec
[  5]  30.00-31.01  sec  2.35 GBytes  20.2 Gbits/sec
[  5]  30.00-31.00  sec  2.35 GBytes  20.2 Gbits/sec
[  5]  31.01-32.00  sec  2.42 GBytes  20.8 Gbits/sec
[  5]  31.00-32.01  sec  2.43 GBytes  20.8 Gbits/sec
[  5]  32.00-33.01  sec  2.47 GBytes  21.1 Gbits/sec
[  5]  32.01-33.00  sec  2.46 GBytes  21.1 Gbits/sec
[  5]  33.01-34.00  sec  2.41 GBytes  20.8 Gbits/sec
[  5]  33.00-34.01  sec  2.42 GBytes  20.8 Gbits/sec
[  5]  34.00-35.00  sec  2.45 GBytes  21.0 Gbits/sec
[  5]  34.01-35.00  sec  2.44 GBytes  21.0 Gbits/sec
[  5]  35.00-36.01  sec  2.40 GBytes  20.5 Gbits/sec
[  5]  35.00-36.00  sec  2.39 GBytes  20.5 Gbits/sec
[  5]  36.01-37.00  sec  2.41 GBytes  20.7 Gbits/sec
[  5]  36.00-37.00  sec  2.41 GBytes  20.7 Gbits/sec
[  5]  37.00-38.00  sec  2.40 GBytes  20.6 Gbits/sec
[  5]  37.00-38.01  sec  2.40 GBytes  20.6 Gbits/sec
[  5]  38.00-39.01  sec  2.47 GBytes  21.2 Gbits/sec
[  5]  38.01-39.01  sec  2.47 GBytes  21.2 Gbits/sec
[  5]  39.01-40.01  sec  2.41 GBytes  20.7 Gbits/sec
[  5]  39.01-40.01  sec  2.41 GBytes  20.7 Gbits/sec
[  5]  40.01-41.01  sec  2.46 GBytes  21.1 Gbits/sec
[  5]  40.01-41.01  sec  2.45 GBytes  21.1 Gbits/sec
[  5]  41.01-42.01  sec  2.43 GBytes  20.8 Gbits/sec
[  5]  41.01-42.00  sec  2.43 GBytes  20.8 Gbits/sec
[  5]  42.01-43.01  sec  2.45 GBytes  21.0 Gbits/sec
[  5]  42.00-43.01  sec  2.45 GBytes  21.0 Gbits/sec
[  5]  43.01-44.00  sec  2.45 GBytes  21.1 Gbits/sec
[  5]  43.01-44.01  sec  2.46 GBytes  21.1 Gbits/sec
[  5]  44.00-45.00  sec  2.45 GBytes  21.0 Gbits/sec
[  5]  44.01-45.01  sec  2.45 GBytes  21.0 Gbits/sec
[  5]  45.00-46.01  sec  2.44 GBytes  21.0 Gbits/sec
[  5]  45.01-46.00  sec  2.44 GBytes  21.0 Gbits/sec
[  5]  46.01-47.00  sec  2.45 GBytes  21.1 Gbits/sec
[  5]  46.00-47.00  sec  2.45 GBytes  21.1 Gbits/sec
[  5]  47.00-48.00  sec  2.38 GBytes  20.4 Gbits/sec
[  5]  47.00-48.00  sec  2.38 GBytes  20.4 Gbits/sec
[  5]  48.00-49.00  sec  2.39 GBytes  20.6 Gbits/sec
[  5]  48.00-49.01  sec  2.40 GBytes  20.6 Gbits/sec
[  5]  49.01-50.00  sec  2.45 GBytes  21.1 Gbits/sec
[  5]  49.00-50.01  sec  2.47 GBytes  21.1 Gbits/sec
[  5]  50.01-51.01  sec  2.36 GBytes  20.2 Gbits/sec
[  5]  50.00-51.01  sec  2.37 GBytes  20.2 Gbits/sec
[  5]  51.01-52.00  sec  2.41 GBytes  20.8 Gbits/sec
[  5]  51.01-52.00  sec  2.41 GBytes  20.7 Gbits/sec
[  5]  52.00-53.00  sec  2.40 GBytes  20.6 Gbits/sec
[  5]  52.00-53.01  sec  2.41 GBytes  20.6 Gbits/sec
[  5]  53.01-54.00  sec  2.44 GBytes  20.9 Gbits/sec
[  5]  53.00-54.01  sec  2.44 GBytes  20.9 Gbits/sec
[  5]  54.01-55.01  sec  2.41 GBytes  20.7 Gbits/sec
[  5]  54.00-55.00  sec  2.41 GBytes  20.7 Gbits/sec
[  5]  55.00-56.00  sec  2.24 GBytes  19.3 Gbits/sec
[  5]  55.01-56.01  sec  2.24 GBytes  19.3 Gbits/sec
[  5]  56.01-57.01  sec  2.38 GBytes  20.4 Gbits/sec
[  5]  56.00-57.00  sec  2.38 GBytes  20.4 Gbits/sec
[  5]  57.01-58.01  sec  2.37 GBytes  20.4 Gbits/sec
[  5]  57.00-58.01  sec  2.37 GBytes  20.4 Gbits/sec
[  5]  58.01-59.00  sec  2.45 GBytes  21.1 Gbits/sec
[  5]  58.01-59.01  sec  2.45 GBytes  21.1 Gbits/sec
[  5]  59.00-60.01  sec  2.42 GBytes  20.8 Gbits/sec
[  5]  60.01-60.01  sec  2.75 MBytes  20.3 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-60.01  sec   145 GBytes  20.7 Gbits/sec                  receiver
[  5]  59.01-60.01  sec  2.42 GBytes  20.8 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-60.01  sec   145 GBytes  20.7 Gbits/sec                  sender
[  5]   0.00-60.01  sec   145 GBytes  20.7 Gbits/sec                  receiver

@davide-baldo davide-baldo force-pushed the davide-baldo/avoid-memory-fragmentation branch 7 times, most recently from d1698c0 to b179f0c Compare November 14, 2024 16:53
@davide-baldo davide-baldo force-pushed the davide-baldo/avoid-memory-fragmentation branch from b179f0c to bee4614 Compare November 14, 2024 17:12
@davide-baldo davide-baldo force-pushed the davide-baldo/avoid-memory-fragmentation branch from bee4614 to d432379 Compare November 14, 2024 17:40
@davide-baldo davide-baldo marked this pull request as ready for review November 14, 2024 17:49
@davide-baldo davide-baldo requested a review from a team as a code owner November 14, 2024 17:49
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