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set sqlite PRAGMAs to improve performance #13

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set sqlite PRAGMAs to improve performance #13

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8 changes: 8 additions & 0 deletions src/report/sqlite/report_builder.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -55,6 +55,14 @@ pub struct SqliteReportBuilder {
impl SqliteReportBuilder {
fn new_with_rng(filename: PathBuf, rng: StdRng) -> Result<SqliteReportBuilder> {
let conn = open_database(&filename)?;
// Trust the operating system to perform writes successfully
conn.pragma_update(None, "synchronous", "OFF")?;

// Don't keep a transaction journal; if we need to roll back, it's unrecoverable
conn.pragma_update(None, "journal_mode", "OFF")?;

// Allow SQLite to hold more database disk pages in memory
conn.pragma_update(None, "cache_size", "-200000")?;
Ok(SqliteReportBuilder {
filename,
conn,
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