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Use partial indexes

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There is no point in indexing rows with common column values like
"finished = 1", since those are the majority of the table. Only the
exceptions ("finished = 0") are interesting. Having smaller tables
should make updates/insertions faster.
This commit is contained in:
Eelco Dolstra 2014-09-29 23:03:38 +02:00
parent 773c7e89cf
commit d9a5143fcb
2 changed files with 25 additions and 8 deletions
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16
src/sql/hydra.sql
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@ -541,14 +541,14 @@ create index IndexBuildInputsOnBuild on BuildInputs(build);
create index IndexBuildInputsOnDependency on BuildInputs(dependency); create index IndexBuildInputsOnDependency on BuildInputs(dependency);
create index IndexBuildProducstOnBuildAndType on BuildProducts(build, type); create index IndexBuildProducstOnBuildAndType on BuildProducts(build, type);
create index IndexBuildProductsOnBuild on BuildProducts(build); create index IndexBuildProductsOnBuild on BuildProducts(build);
create index IndexBuildStepsOnBusy on BuildSteps(busy); create index IndexBuildStepsOnBusy on BuildSteps(busy) where busy = 1;
create index IndexBuildStepsOnDrvpathTypeBusyStatus on BuildSteps(drvpath, type, busy, status); create index IndexBuildStepsOnDrvPath on BuildSteps(drvpath);
create index IndexBuildStepOutputsOnPath on BuildStepOutputs(path); create index IndexBuildStepOutputsOnPath on BuildStepOutputs(path);
create index IndexBuildsOnFinished on Builds(finished); create index IndexBuildsOnFinished on Builds(finished) where finished = 0;
create index IndexBuildsOnFinishedBusy on Builds(finished, busy); create index IndexBuildsOnFinishedBusy on Builds(finished, busy) where finished = 0;
create index IndexBuildsOnIsCurrent on Builds(isCurrent); create index IndexBuildsOnIsCurrent on Builds(isCurrent) where isCurrent = 1;
create index IndexBuildsOnJobsetIsCurrent on Builds(project, jobset, isCurrent); create index IndexBuildsOnJobsetIsCurrent on Builds(project, jobset, isCurrent) where isCurrent = 1;
create index IndexBuildsOnJobIsCurrent on Builds(project, jobset, job, isCurrent); create index IndexBuildsOnJobIsCurrent on Builds(project, jobset, job, isCurrent) where isCurrent = 1;
create index IndexBuildsOnJobset on Builds(project, jobset); create index IndexBuildsOnJobset on Builds(project, jobset);
create index IndexBuildsOnProject on Builds(project); create index IndexBuildsOnProject on Builds(project);
create index IndexBuildsOnTimestamp on Builds(timestamp); create index IndexBuildsOnTimestamp on Builds(timestamp);
@ -567,7 +567,7 @@ create index IndexProjectsOnEnabled on Projects(enabled);
create index IndexReleaseMembersOnBuild on ReleaseMembers(build); create index IndexReleaseMembersOnBuild on ReleaseMembers(build);
-- For hydra-update-gc-roots. -- For hydra-update-gc-roots.
create index IndexBuildsOnKeep on Builds(keep); create index IndexBuildsOnKeep on Builds(keep) where keep = 1;
-- To get the most recent eval for a jobset. -- To get the most recent eval for a jobset.
create index IndexJobsetEvalsOnJobsetId on JobsetEvals(project, jobset, hasNewBuilds, id desc); create index IndexJobsetEvalsOnJobsetId on JobsetEvals(project, jobset, hasNewBuilds, id desc);

17
src/sql/upgrade-30.sql Normal file
View file

@ -0,0 +1,17 @@
drop index IndexBuildStepsOnBusy;
drop index IndexBuildStepsOnDrvpathTypeBusyStatus;
drop index IndexBuildsOnFinished;
drop index IndexBuildsOnFinishedBusy;
drop index IndexBuildsOnIsCurrent;
drop index IndexBuildsOnJobsetIsCurrent;
drop index IndexBuildsOnJobIsCurrent;
drop index IndexBuildsOnKeep;
create index IndexBuildStepsOnBusy on BuildSteps(busy) where busy = 1;
create index IndexBuildStepsOnDrvPath on BuildSteps(drvpath);
create index IndexBuildsOnFinished on Builds(finished) where finished = 0;
create index IndexBuildsOnFinishedBusy on Builds(finished, busy) where finished = 0;
create index IndexBuildsOnIsCurrent on Builds(isCurrent) where isCurrent = 1;
create index IndexBuildsOnJobsetIsCurrent on Builds(project, jobset, isCurrent) where isCurrent = 1;
create index IndexBuildsOnJobIsCurrent on Builds(project, jobset, job, isCurrent) where isCurrent = 1;
create index IndexBuildsOnKeep on Builds(keep) where keep = 1;