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| author | Ludovic Courtès <ludo@gnu.org> | 2019-10-27 19:12:11 +0100 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2019-10-27 23:05:00 +0100 |
| commit | f5fca9a82cec76d2e10b8b6c96be2dd79f638ba0 (patch) | |
| tree | 96ad0f5143c44fc8a358943da7f541748b05cdaf | |
| parent | c57e417eff8649fce44041bc8e187a3e0c91b801 (diff) | |
| download | guix-f5fca9a82cec76d2e10b8b6c96be2dd79f638ba0.tar guix-f5fca9a82cec76d2e10b8b6c96be2dd79f638ba0.tar.gz | |
gexp: Cache the module to derivation mappings.
This reduces the number of 'add-data-to-store' cache lookups from 3329
to 2743 (hit rate: 27% to 11%) when running:
GUIX_PROFILING=add-data-to-store-cache guix build libreoffice -nd
Execution time of "guix build libreoffice -nd" goes from 1.86s to 1.80s.
* guix/gexp.scm (imported+compiled-modules): Wrap body in 'mcached'.
| -rw-r--r-- | guix/gexp.scm | 33 |
1 files changed, 18 insertions, 15 deletions
diff --git a/guix/gexp.scm b/guix/gexp.scm index fa74e80cd6..b640c079e4 100644 --- a/guix/gexp.scm +++ b/guix/gexp.scm @@ -660,21 +660,24 @@ names and file names suitable for the #:allowed-references argument to (module-path %load-path)) "Return a pair where the first element is the imported MODULES and the second element is the derivation to compile them." - (mlet %store-monad ((modules (if (pair? modules) - (imported-modules modules - #:system system - #:module-path module-path) - (return #f))) - (compiled (if (pair? modules) - (compiled-modules modules - #:system system - #:module-path module-path - #:extensions extensions - #:guile guile - #:deprecation-warnings - deprecation-warnings) - (return #f)))) - (return (cons modules compiled)))) + (mcached equal? + (mlet %store-monad ((modules (if (pair? modules) + (imported-modules modules + #:system system + #:module-path module-path) + (return #f))) + (compiled (if (pair? modules) + (compiled-modules modules + #:system system + #:module-path module-path + #:extensions extensions + #:guile guile + #:deprecation-warnings + deprecation-warnings) + (return #f)))) + (return (cons modules compiled))) + modules + system extensions guile deprecation-warnings module-path)) (define* (lower-gexp exp #:key |