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                                            xiaoda

Adding parameters causes pyramid efficiency to decrease

I can confirm that adding ALL CPUS using multithreading will reduce efficiency. ![3d934e2b83672447ad68f700978ff970](https://github.com/OSGeo/gdal/assets/48905511/b4d5bf04-48d7-4159-9ccb-bff45ec3bcfb)

Adding parameters causes pyramid efficiency to decrease

I don't think so. I've tested it on several different computers and all have the same result.

Adding parameters causes pyramid efficiency to decrease

ok. My system number of cores is 6, number of logical processors is 12,RAM is16GB. gdalinfo: `Driver: GTiff/GeoTIFF Files: E:/data/CB04A/fusion/CB04A_WPM_E123.2_N41.7_20230616_L1A0000473266-PAN-Ortho-fus.tiff E:/data/CB04A/fusion/CB04A_WPM_E123.2_N41.7_20230616_L1A0000473266-PAN-Ortho-fus.tiff.aux.xml Size is 65606, 49443 Coordinate System is: GEOGCRS["WGS 84",...