Is there any time estimation about sqlite3's open speed?
- by sxingfeng
I am using SQLite3 in C++, I found the opening time of sqlite seems unstable at the first time( I mean ,open windows and open the db at the first time) It takes a long tiom on 50M db, about 10s in windows? and vary on different times.
Has any one met the same problem?
I am writting an desktop application in windows, so the openning speed is really important for me.
Thanks in advance!
int nRet;
#if defined(_UNICODE) || defined(UNICODE)
nRet = sqlite3_open16(szFile, &mpDB); // not tested under window 98
#else // For Ansi Version
//*************- Added by Begemot szFile must be in unicode- 23/03/06 11:04 - ****
OSVERSIONINFOEX osvi;
ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX));
osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
GetVersionEx ((OSVERSIONINFO *) &osvi);
if ( osvi.dwMajorVersion == 5)
{
WCHAR pMultiByteStr[MAX_PATH+1];
MultiByteToWideChar( CP_ACP, 0, szFile,
_tcslen(szFile)+1, pMultiByteStr,
sizeof(pMultiByteStr)/sizeof(pMultiByteStr[0]) );
nRet = sqlite3_open16(pMultiByteStr, &mpDB);
}
else
nRet = sqlite3_open(szFile,&mpDB);
#endif
//*************************
if (nRet != SQLITE_OK)
{
LPCTSTR szError = (LPCTSTR) _sqlite3_errmsg(mpDB);
throw CppSQLite3Exception(nRet, (LPTSTR)szError, DONT_DELETE_MSG);
}
setBusyTimeout(mnBusyTimeoutMs);
