Also...try doing a "copy my.db nul:" to get it cached once before you use it. You're probably running into disk head seeking the first time (due to random placement of your data relative to your query) which will slow you down a lot. Michael D. Black Senior Scientist Advanced Analytics Directorate Northrop Grumman Information Systems
________________________________ From: sqlite-users-boun...@sqlite.org on behalf of Simon Slavin Sent: Wed 7/21/2010 9:28 PM To: General Discussion of SQLite Database Subject: EXTERNAL:Re: [sqlite] Very Slow DB Access After Reboot on Windows On 21 Jul 2010, at 4:56pm, Samet YASLAN wrote: > I have a 30MB DB file with 4 tables. > Execution time for a query is 1 sec normally but it is like 40 secs > after restarting window. > This seems to be related with file caching of Windows. The same source > code does not cause this problem on Linux. What is the name of the database file ? I understand that there is a Windows bug where it tries to cache all of files with certain extensions like '.db'. Try changing the filename extention to '.sqlite' or something else unusual. Simon. _______________________________________________ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
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