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Even if compile time option SQLITE_MAX_WORKER_THREADS is set to one or greater, set the default number of worker threads to zero. Distribute data more evenly between threads in sqlite3VdbeSorterWrite() to improve performance when sorting large amounts of data. Add new test file sort2.test.

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FossilOrigin-Name: 643c86a056168e39fcb7f39b8a72731f1eb246db
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dan
2014-04-01 15:38:44 +00:00
parent 38fdead890
commit 578e1ca8d7
8 changed files with 102 additions and 17 deletions
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6
src/test_config.c
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@@ -99,6 +99,12 @@ static void set_options(Tcl_Interp *interp){
Tcl_SetVar2(interp, "sqlite_options", "mmap", "0", TCL_GLOBAL_ONLY);
#endif
#if SQLITE_MAX_WORKER_THREADS>0
Tcl_SetVar2(interp, "sqlite_options", "worker_threads", "1", TCL_GLOBAL_ONLY);
#else
Tcl_SetVar2(interp, "sqlite_options", "worker_threads", "0", TCL_GLOBAL_ONLY);
#endif
#if 1 /* def SQLITE_MEMDEBUG */
Tcl_SetVar2(interp, "sqlite_options", "memdebug", "1", TCL_GLOBAL_ONLY);
#else