[CI] Improve ccache performance for Windows Python builds (ccache windows version bump)#42195
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[CI] Improve ccache performance for Windows Python builds (ccache windows version bump)#42195murgatroid99 wants to merge 1 commit into
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We got an 80 minute build with a cache hit ratio of about 75%: https://btx.cloud.google.com/invocations/1d464888-d5d4-4d6a-9c60-1e6da7e54e0f/targets |
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Internal ref b/501458064 |
sergiitk
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Apr 22, 2026
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sergiitk
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Apr 22, 2026
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… build directory consistent across runs) (#42212) We see ccache cache misses because each python build runs in a different temporary directory, and some header file names in the cache entry's manifest appear to use the full file path, so they fail to match. This change resolves that by making the build directory consistent for each build type. ref: - b/501458064 - Previous change: #42195 Closes #42212 COPYBARA_INTEGRATE_REVIEW=#42212 from murgatroid99:python_windows_ccache_basedir a29d1bb PiperOrigin-RevId: 904139620
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…dows version bump) (grpc#42195) In the Python Windows builds, ccache currently has a low cache hit rate and fails to populate the direct mode cache. This is an attempt to fix that. Closes grpc#42195 COPYBARA_INTEGRATE_REVIEW=grpc#42195 from murgatroid99:python_windows_ccache_fix 2205915 PiperOrigin-RevId: 903665805
asheshvidyut
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… build directory consistent across runs) (grpc#42212) We see ccache cache misses because each python build runs in a different temporary directory, and some header file names in the cache entry's manifest appear to use the full file path, so they fail to match. This change resolves that by making the build directory consistent for each build type. ref: - b/501458064 - Previous change: grpc#42195 Closes grpc#42212 COPYBARA_INTEGRATE_REVIEW=grpc#42212 from murgatroid99:python_windows_ccache_basedir a29d1bb PiperOrigin-RevId: 904139620
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…dows version bump) (grpc#42195) In the Python Windows builds, ccache currently has a low cache hit rate and fails to populate the direct mode cache. This is an attempt to fix that. Closes grpc#42195 COPYBARA_INTEGRATE_REVIEW=grpc#42195 from murgatroid99:python_windows_ccache_fix 2205915 PiperOrigin-RevId: 903665805
asheshvidyut
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Jun 10, 2026
… build directory consistent across runs) (grpc#42212) We see ccache cache misses because each python build runs in a different temporary directory, and some header file names in the cache entry's manifest appear to use the full file path, so they fail to match. This change resolves that by making the build directory consistent for each build type. ref: - b/501458064 - Previous change: grpc#42195 Closes grpc#42212 COPYBARA_INTEGRATE_REVIEW=grpc#42212 from murgatroid99:python_windows_ccache_basedir a29d1bb PiperOrigin-RevId: 904139620
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In the Python Windows builds, ccache currently has a low cache hit rate and fails to populate the direct mode cache. This is an attempt to fix that.