raulcd commented on PR #47567:
URL: https://github.com/apache/arrow/pull/47567#issuecomment-3300151177
It took me a while but finally ccache is set up correctly:
```
"=== CCACHE Stats before build ==="
D:\a\arrow\arrow>ccache -sv
Summary:
Cache directory: C:\Users\runneradmin/ccache
Primary config: C:\Users\runneradmin/ccache/ccache.conf
Secondary config: /usr/local/etc/ccache.conf
Stats updated: 09/16/25 18:53:37
Hits: 51 / 1012 (5.04 %)
Direct: 0 / 1012 (0.00 %)
Preprocessed: 51 / 1012 (5.04 %)
Misses: 961
Direct: 1012
Preprocessed: 961
Primary storage:
Hits: 51 / 2023 (2.52 %)
Misses: 1972
Cache size (GB): 0.12 / 1.00 (12.34 %)
Files: 1972
```
and after:
```
D:\a\arrow\arrow>echo "=== CCACHE Stats after build ==="
"=== CCACHE Stats after build ==="
D:\a\arrow\arrow>ccache -sv
Summary:
Cache directory: C:\Users\runneradmin/ccache
Primary config: C:\Users\runneradmin/ccache/ccache.conf
Secondary config: /usr/local/etc/ccache.conf
Stats updated: 09/16/25 19:10:42
Hits: 1019 / 1985 (51.34 %)
Direct: 965 / 1985 (48.61 %)
Preprocessed: 54 / 1020 (5.29 %)
Misses: 966
Direct: 1020
Preprocessed: 966
Primary storage:
Hits: 1991 / 3968 (50.18 %)
Misses: 1977
Cache size (GB): 0.13 / 1.00 (12.90 %)
Files: 1977
```
The job time went down from ~30 minutes to ~11 minutes when cache is working.
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