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Document perf improvement trials

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This commit is contained in:
Lucian Petrut
2026-09-07 14:11:24 +00:00
parent d0a6de03d2
commit b11e109ec5
4 changed files with 43 additions and 7 deletions
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docs/reverse_engineering_procedure.md
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@@ -249,8 +249,9 @@ the ticket switched from `NfcGetVmFiles` to `NfcRandomAccessOpenDisk`
10 GiB VM for the run so writes cannot land on other lab disks.
The Python client splits writes larger than 64 KiB into AIO chunks and
keeps up to four in flight (`NfcAioInitSession` buffer count). Header
and extra go in one `sendall`, with `TCP_NODELAY`. Details:
keeps four in flight (VDDK's `NfcAioInitSession` buffer count). Larger
windows were tried; they do not match VDDK throughput. Header and extra
go in one `sendall`, with `TCP_NODELAY`. Details:
`docs/nfc_write.md`. Proof: write then read in
`tests/integration/test_nfc_read_write.py` and the VDDK cross-check in
`tests/integration/test_crosscheck.py`.