Use column indexes in git-cvsserver where necessary.
Tonight I found a git-cvsserver instance spending a lot of time in disk IO while trying to process operations against a Git repository with >30,000 objects contained in it. Blowing away my SQLLite database and rebuilding all tables with indexes on the attributes that git-cvsserver frequently runs queries against seems to have resolved the issue quite nicely. Since the indexes shouldn't hurt performance on small repositories and always helps on larger repositories we should just always create them when creating the revision storage tables. Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
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@ -2118,9 +2118,17 @@ sub new
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mode TEXT NOT NULL
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mode TEXT NOT NULL
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)
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)
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");
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");
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$self->{dbh}->do("
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CREATE INDEX revision_ix1
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ON revision (name,revision)
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");
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$self->{dbh}->do("
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CREATE INDEX revision_ix2
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ON revision (name,commithash)
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");
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}
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}
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# Construct the revision table if required
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# Construct the head table if required
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unless ( $self->{tables}{head} )
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unless ( $self->{tables}{head} )
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{
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{
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$self->{dbh}->do("
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$self->{dbh}->do("
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@ -2134,6 +2142,10 @@ sub new
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mode TEXT NOT NULL
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mode TEXT NOT NULL
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)
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)
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");
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");
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$self->{dbh}->do("
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CREATE INDEX head_ix1
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ON head (name)
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");
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}
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}
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# Construct the properties table if required
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# Construct the properties table if required
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