版本thinkphp3.1.3 ，
在一个action内循环插入无法提交，因为开启了debug，有300次循环，大概到120次的时候就卡了。无法插入数据库，需要等循环完成了才能插入，请问这个是为什么？

for($i=0;$i <3000;$i++){
//data_subproducts begin
$data_subproducts['product_id'] =$return_parent_id ;
$data_subproducts['skucode'] =$skucode ;
$data_subproducts['msrp'] =$msrp ;
$data_subproducts['price'] =$price ;
$data_subproducts['freight'] =$Shipping ;//运费shipping
$data_subproducts['stock'] =$Quantity; //库存quantity
$data_subproducts['color'] =$Color ;
$data_subproducts['size'] =$Size ;
Log::write(" begin from ".$i."line subproduct add begin ,look who use the time for look tail -f log",Log::DEBUG);
$database_subproduct_model->data($data_subproducts)->add();