DEAR All ,
I want to use SQLite for our project, the main thing is that the
database contains millions of Records. So for the faster
operations on the db I want to use the SQLite as in-memory database.
I have compared the results of SQLite as Disk db and as Memory db
but I am not getting much difference. I am surprised that there
must be some difference between memory mode and disk mode.
Tests were run on 2.4GHz Sempron with 1GB of RAM and running
Windows XP + SP2 with all updates applied. Test 20 : 1000000
INSERTs CREATE TABLE t1(a INTEGER, b INTEGER, c VARCHAR(100));
INSERT INTO t1 VALUES(1,13153,'thirteen thousand one hundred fifty
three');
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In Memory 37.51 Sec
DISK BASED 39.760000 Sec
Disk Space consumed 61.6 MB
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Test 21`: 3000000 INSERTs
In Memory 141.79 Sec
DISK BASED 111.906000 Sec
Disk Space consumed 185 MB
----------------------------------------------------------------
Test 22: 5000000 INSERTs
In Memory 279.42 Sec
DISK BASED 201.266000 Sec
Disk Space consumed 308 MB
Test 23: 10000000 INSERTs
----------------------------------------------------------------
In Memory 784.797000 Sec
DISK BASED 399.846000 Sec
Disk Space consumed 617 MB
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I am testing it in the following way
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dwStart = GetTickCount();
db.execDML("begin transaction;");
db.execDML("CREATE TABLE t1(a INTEGER, b INTEGER, c VARCHAR(100))
;") ; for( int i=1;i<=10000000;i++) db.execDML("INSERT INTO t1
VALUES(1, 298361,'two hundred ninety eight thousand three hundred')
"); db.execDML("commit Transaction") ; dwStop = GetTickCount();
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I think I am missing something or some necessary parameters. I
spent a lot of time to find out the problem. Please Guide me. I
will be really thankful.
Regards,
MANZOOR ILAHI
--
COMSATS Institute of Information Technology (http://www.ciit.edu.pk)
