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[eric] perf: item 5 (defender exclusion) measured -- NO cold benefit; cold is not defender

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- cold 21.4s WITH exclusion vs 22.5s without; items 1+3 also no change

- two defender-targeting fixes both ~0 -> residual cold is disk I/O + interpreter init + squirrel first-run, not AV

- recommend removing the exclusion (weakened AV for no gain); bank the wins (cold 54-138->22s, warm 9-10->5s)
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Eric
2026-06-17 02:12:15 -07:00
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@@ -164,6 +164,34 @@ direct-vite + junction code, unit tests, local repro) + the warm-cache extract p
the end-to-end GUI "create app -> live preview" is the one manual checklist step
(can't drive the Electron+agent UI headlessly).
## #9 item 5 (Defender exclusion) measured: ALSO no cold benefit -> cold is NOT Defender
Applied the Defender exclusion (admin) for all 3 openswarm folders, rebuilt a
fresh-content lean v1.3.86 (so Defender would see new files), installed with the
exclusion active, measured cold:
| | cold backend-http-ready |
| --- | --- |
| no exclusion (items off) | 22.5 s |
| no exclusion (items 1+3 on) | 22.4 s |
| **Defender exclusion ON** | **21.4 s (no change)** |
Conclusion: TWO independent Defender-targeting interventions (file-count via
items 1+3, and a full AV exclusion) both moved cold by ~0. So the residual ~22 s
cold is NOT Defender real-time scanning. It is the first-launch-after-install cost
-- cold disk I/O of the imported native binaries + bundled-Python interpreter init
+ Squirrel first-run -- which neither AV-exclusion nor file-count tricks touch.
(Caveat: my non-admin shell can't read Get-MpPreference to re-confirm the
exclusion is live, but the result is consistent with the items-1+3 negative.)
ACTION: remove the exclusion -- it weakened AV for zero gain:
`& scripts\add-defender-exclusion.ps1 -Remove` (elevated).
The cold win was already banked by the asar trim (54-138 s -> ~22 s). Pushing
cold below ~22 s would need shrinking the startup-imported bytes (lazy-load heavy
native deps like lxml/PIL, or trim the 242 MB bundled claude.exe) or faster disk
-- bigger/riskier work with diminishing returns. Warm (5 s) is already under goal.
## #9 items 1+3 measured on the signed build: NO cold-start benefit (negative result)
Built v1.3.86 with items 1+3 ON (python-env 13,554 -> 9,285 files, ~31% fewer) and