entity framework比LinQ还慢那？该怎么处理

entity framework比LinQ还慢那？
本地项目环境：
VS2010
.net framework 4.0
mysql 5.0
项目采用webform

下面是主要函数的代码，通过查询2次数据库取到本人对应的模块信息，但是发现每次点击都会延迟3秒左右。
edmx 我是通过vs2010的自动生成实现的，感觉EF比LinQ To SQL 慢好多

C# code

private EFEntities db = new EFEntities();/// <summary>        /// 获取模块列表        /// </summary>        /// <param name="uid"></param>        /// <returns></returns>        public List<models> FindModels(int uid, int modelId)        {            var model_list = from p in db.model_in_role                             join r in db.teacher_in_role on p.RoleId equals r.RoleId                             where r.Uid == uid                             select p.ModelIdList;            List<models> models = new List<models>();            if (model_list.Count() > 0)            {                //显示数据                string[] mms = model_list.First().Split(',');                List<int> alModelId = new List<int>();                foreach (var mm in mms)                {//StringHelper.StringToInt 是把string 转成 int                    int mId = StringHelper.StringToInt(mm);                    if (mId > 0)                    {                        alModelId.Add(mId);                    }                }                var ms = from p in db.models                         where alModelId.Contains(p.ModelId) && p.Pid == modelId                         select p;                models = ms.ToList();            }            return models;        }

C# code

                var ms = from p in db.models                         where alModelId.Contains(p.ModelId) && p.Pid == modelId                         select p;                models = ms.ToList();