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Create DB in memory #20

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Merged
fsimonis merged 1 commit into from
Nov 17, 2025
Merged

Create DB in memory #20

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14 changes: 10 additions & 4 deletions preciceprofiling/merge.py
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Original file line number Diff line number Diff line change
Expand Up @@ -466,19 +466,25 @@ def mergeCommand(files, outfile, align):
resolved = detectFiles(files)
sanitized = sanitizeFiles(resolved)

# Remove the old DB if present
outfile.unlink(missing_ok=True)
con = sqlite3.connect(outfile)

# We create the db in-memory and safe it to disk later (10% faster)
con = sqlite3.connect(":memory:")

loadProfilingOutputs(con, sanitized)

if align:
alignEvents(con)

# commit and tidy up
con.commit()
createIndices(con)
con.execute("VACUUM")
con.commit()

# Backup the in-memory DB to a blank DB on disk
filedb = sqlite3.connect(outfile)
con.backup(filedb)
con.close()
filedb.close()

return 0

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