[Xapian-devel] btree function question ?? ( prev charset error , send again )
kay jean
kayjean at gmail.com
Wed Dec 15 07:28:13 GMT 2004
Hi
I just want to study the core of btree function. So I hava a small test program.
I try to add different items 1000000 times.
(test1 , test1) (test2 , test2) (test3 , test3) .....(test1000000 ,
test1000000)
after that I run the program again and again
step 1 , db file size is 54099968 , get_entry_count is 1000000
step 2 , db file size is 108208128 , get_entry_count is 1000255
step 3 , db file size is 108240896 , get_entry_count is 1000868
file size and get_entry_count grows slowly , Is that ok ??
Thanks
Hao Kuang , Ku
kayjean at gmail.com
--------------------------test code is ------------------------
#include "btree.h"
using namespace std;
int main()
{
Btree table( "test", false );
if( !table.exists() )
table.create(8192);
table.open();
int revision = table.get_open_revision_number();
printf( " revision is %d\n " , revision );
printf( "entry count %d \n" , table.get_entry_count() );
string tag;
char temp[1000];
for( int i = 0 ; i < 1000000 ; i++ )
{
sprintf( temp , "%i" , i );
tag = "test";
tag.append( temp );
table.add(tag, tag);
if( i % 10000 == 0 )
{
printf( "%s\n" , tag.c_str() );
printf( "%d\n" , i );
}
}
table.commit( table.get_open_revision_number() + 1 );
return 0;
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