From 09b5cd58bb11069a0d1c3c6b23c1209ae5c145d2 Mon Sep 17 00:00:00 2001 From: ghzhang Date: Tue, 18 Jul 2023 16:26:27 +0800 Subject: [PATCH] optimizate history data --- plugins/historydata/ua_history_data_backend_sqlite.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/plugins/historydata/ua_history_data_backend_sqlite.c b/plugins/historydata/ua_history_data_backend_sqlite.c index 33a7474..3ef4d5c 100755 --- a/plugins/historydata/ua_history_data_backend_sqlite.c +++ b/plugins/historydata/ua_history_data_backend_sqlite.c @@ -961,10 +961,16 @@ UA_HistoryDataBackend_Sqlite(char* path) { sqlite3_exec(db,"PRAGMA temp.cache_size=100;",NULL,NULL,&zErrMsg); sqlite3_free(zErrMsg); - sqlite3_exec(db,"PRAGMA cache_size=100;",NULL,NULL,&zErrMsg); + sqlite3_exec(db,"PRAGMA cache_size=1000;",NULL,NULL,&zErrMsg); sqlite3_free(zErrMsg); - - sqlite3_exec(db,"PRAGMA busy_timeout=0;",NULL,NULL,&zErrMsg); + + sqlite3_exec(db,"PRAGMA journal_mode = WAL;",NULL,NULL,&zErrMsg); + sqlite3_free(zErrMsg); + + sqlite3_exec(db,"PRAGMA journal_size_limit = 16384;",NULL,NULL,&zErrMsg); + sqlite3_free(zErrMsg); + + sqlite3_exec(db,"PRAGMA busy_timeout=500;",NULL,NULL,&zErrMsg); sqlite3_free(zErrMsg); sqlite3_exec(db,"PRAGMA legacy_file_format=OFF;",NULL,NULL,&zErrMsg); -- 2.17.1