Enable -O2 optimization option #468

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MrUnknownDE · 2026-04-05T17:53:02+02:00

MrUnknownDE commented

2026-04-05 17:53:02 +02:00

Originally created by @deiteris on 12/16/2021

With -O2 optimization, the speed increases by 30% while RAM usage increased by 0.2% and FLASH usage - by 1.1% on esp8266 (IMU_MPU6050). Might be a subject to additional testing, but no bugs were noticed.

With -Os:

RAM:   [====      ]  44.6% (used 36504 bytes from 81920 bytes)
Flash: [===       ]  33.8% (used 352907 bytes from 1044464 bytes)

Loop execution times
Min: 241uS
Max: 1870uS
Average: 329uS

With -O2:

RAM:   [====      ]  44.8% (used 36720 bytes from 81920 bytes)
Flash: [===       ]  34.9% (used 364271 bytes from 1044464 bytes)

Loop execution times
Min: 162uS
Max: 1430uS
Average: 242uS

*Originally created by @deiteris on 12/16/2021* With -O2 optimization, the speed increases by 30% while RAM usage increased by 0.2% and FLASH usage - by 1.1% on esp8266 (IMU_MPU6050). Might be a subject to additional testing, but no bugs were noticed. With `-Os`: ``` RAM: [==== ] 44.6% (used 36504 bytes from 81920 bytes) Flash: [=== ] 33.8% (used 352907 bytes from 1044464 bytes) ``` Loop execution times Min: 241uS Max: 1870uS Average: 329uS With `-O2`: ``` RAM: [==== ] 44.8% (used 36720 bytes from 81920 bytes) Flash: [=== ] 34.9% (used 364271 bytes from 1044464 bytes) ``` Loop execution times Min: 162uS Max: 1430uS Average: 242uS

MrUnknownDE closed this issue

2026-04-05 17:53:02 +02:00

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Reference: github/SlimeVR-Tracker-ESP#468