Recreated repository

1 files changed, 81 insertions, 0 deletions

diff --git a/big_sqlite_db/bigdb.pl b/big_sqlite_db/bigdb.pl
new file mode 100755
index 0000000..429970d
--- /dev/null
+++ b/big_sqlite_db/bigdb.pl
@@ -0,0 +1,81 @@
+#!/usr/bin/perl
+use POSIX;
+use IO::File;
+use DBI;
+use DBD::SQLite;
+
+srand();
+
+if ( scalar(@ARGV) < 3 ){
+    print( "Usage:".__FILE__." [database file] [rows to create] [rows before each commit]\n" );
+    exit( 0 );
+}
+
+sub gen_random{
+    return int( rand($_[0]) );
+}
+
+my $g_db = DBI->connect( "DBI:SQLite:dbname=".$ARGV[0], "", "" ) or die "Failed to open database";
+
+sub tx_reset{
+    $g_db->do( "COMMIT;" ) or die "Failed to commit";
+    $g_db->do( "BEGIN;" ) or die "Failed to start transaction";
+    return;
+}
+
+my $tbl_create = $g_db->prepare( "create table if not exists testtable(rnd_num integer);" ) or die "Failed to prepare query";
+$tbl_create->execute() or die "Failed to execute query";
+$tbl_create->finish() or die "Failed to finish query";
+undef $tbl_create;
+
+my $idx_create = $g_db->prepare( "create index if not exists testidx on testtable(rnd_num);" ) or die "Failed to prepare query";
+$idx_create->execute() or die "Failed to execute query";
+$idx_create->finish() or die "Failed to finish query";
+undef $idx_create;
+
+my $c_row_count = 0;
+my $c_uncommitted = 0;
+my $setcounter = 0;
+
+my $iquery = $g_db->prepare( "insert into testtable(rnd_num) values(?);" ) or die "Failed to prepare insert query";
+
+my $rnd_val = gen_random( 100 );
+
+$g_db->do( "pragma synchronous = off;" ) or die "Failed to disable fsync";
+
+$g_db->do( "BEGIN;" ) or die "Failed to start transaction";
+
+for ( ; $c_row_count < int($ARGV[1]); ){
+    for ( ; $setcounter < 100000; $setcounter++ ){
+        $iquery->bind_param( 1, $rnd_val, $SQL_INTEGER ) or die "Failed to bind";
+        $iquery->execute() or die "Failed to execute query";
+        $iquery->finish() or die "Failed to finish query";
+        print( "value = ".$rnd_val."\tcount = ".$c_row_count."\n" );
+        $rnd_val = gen_random( 100 );
+        $c_row_count++;
+        $c_uncommitted++;
+        if ( $c_uncommitted >= int($ARGV[2]) ){
+            print( "Commit threshold reached, comitting and starting new transaction\n" );
+            tx_reset();
+            print( "Commit finished and new transaction started\n" );
+            $c_uncommitted = 0;
+        }
+    }
+    print( "value = ".$rnd_val."\tcount = ".$c_row_count."\n" );
+    print( "Generated set of 100000 rows, waiting 1 second before next\n" );
+    $setcounter = 0;
+    sleep( 1 );
+}
+
+$g_db->do( "COMMIT;" ) or die "Failed to do final commit";
+
+$g_db->disconnect() or die "Failed to disconnect";
+
+undef $iquery;
+undef $c_row_count;
+undef $c_uncommitted;
+undef $g_db;
+undef $rnd_val;
+undef $setcounter;
+
+exit( 0 );