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| author | Matej Urbas <matej.urbas@gmail.com> | 2023-05-13 11:25:06 +0100 |
|---|---|---|
| committer | Matej Urbas <matej.urbas@gmail.com> | 2023-05-14 09:51:11 +0100 |
| commit | c66a7af0c67e11579acf2554145f693d3a861450 (patch) | |
| tree | f18b303e8fad5c476645e99633f69908acbbddbe | |
| parent | 916da456cbc1ae0142d4a7c0162809475767a54a (diff) | |
`max-substitution-jobs` release note entry
| -rw-r--r-- | doc/manual/src/release-notes/rl-next.md | 4 | ||||
| -rw-r--r-- | src/libstore/build/substitution-goal.cc | 7 |
2 files changed, 7 insertions, 4 deletions
diff --git a/doc/manual/src/release-notes/rl-next.md b/doc/manual/src/release-notes/rl-next.md index 78ae99f4b..bc0d41bdf 100644 --- a/doc/manual/src/release-notes/rl-next.md +++ b/doc/manual/src/release-notes/rl-next.md @@ -1,2 +1,6 @@ # Release X.Y (202?-??-??) +- Speed-up of downloads from binary caches. + The number of parallel downloads (also known as substitutions) has been separated from the [`--max-jobs` setting](../command-ref/conf-file.md#conf-max-jobs). + The new setting is called [`max-substitution-jobs`](../command-ref/conf-file.md#conf-max-substitution-jobs). + The number of parallel downloads is now set to 16 by default (previously, the default was 1 due to the coupling to build jobs). diff --git a/src/libstore/build/substitution-goal.cc b/src/libstore/build/substitution-goal.cc index 30c196894..93867007d 100644 --- a/src/libstore/build/substitution-goal.cc +++ b/src/libstore/build/substitution-goal.cc @@ -200,10 +200,9 @@ void PathSubstitutionGoal::tryToRun() { trace("trying to run"); - /* Make sure that we are allowed to start a build. Note that even - if maxBuildJobs == 0 (no local builds allowed), we still allow - a substituter to run. This is because substitutions cannot be - distributed to another machine via the build hook. */ + /* Make sure that we are allowed to start a substitution. Note that even + if maxSubstitutionJobs == 0, we still allow a substituter to run. This + prevents infinite waiting. */ if (worker.getNrSubstitutions() >= std::max(1U, (unsigned int) settings.maxSubstitutionJobs)) { worker.waitForBuildSlot(shared_from_this()); return; |