Gives a nice XML representation of NHibernate session factory statistics object

SessionFactoryExtensions.cs

using System;
using System.Linq;
using System.Xml.Linq;
using NHibernate;

namespace NHibernate
{
    public static class SessionFactoryExtensions
    {
        public static XElement GetStatisticsXml(this ISessionFactory sessionFactory)
        {
            if (sessionFactory == null)
                throw new ArgumentNullException("sessionFactory");

            var stats = sessionFactory.Statistics;
            if (!stats.IsStatisticsEnabled)
                return new XElement("NHibernateStatistics", "Session factory statistics is disabled");

            return new XElement(
                "NHibernateStatistics",
                new XElement("StartTime", stats.StartTime),
                new XElement("SessionCloseCount", stats.SessionCloseCount),
                new XElement("SessionOpenCount", stats.SessionOpenCount),
                new XElement("ConnectCount", stats.ConnectCount),
                new XElement("TransactionCount", stats.TransactionCount),
                new XElement("SuccessfulTransactionCount", stats.SuccessfulTransactionCount),
                new XElement("CloseStatementCount", stats.CloseStatementCount),
                new XElement("FlushCount", stats.FlushCount),
                new XElement("OptimisticFailureCount", stats.OptimisticFailureCount),
                new XElement("PrepareStatementCount", stats.PrepareStatementCount),
                new XElement("Entities",
                    new XAttribute("EntityDeleteCount", stats.EntityDeleteCount),
                    new XAttribute("EntityFetchCount", stats.EntityFetchCount),
                    new XAttribute("EntityInsertCount", stats.EntityInsertCount),
                    new XAttribute("EntityLoadCount", stats.EntityLoadCount),
                    new XAttribute("EntityUpdateCount", stats.EntityUpdateCount),
                    from e in stats.EntityNames
                    let s = stats.GetEntityStatistics(e)
                    select new XElement("Entity",
                        new XAttribute("RoleName", e),
                        new XAttribute("DeleteCount", s.DeleteCount),
                        new XAttribute("FetchCount", s.FetchCount),
                        new XAttribute("InsertCount", s.InsertCount),
                        new XAttribute("LoadCount", s.LoadCount),
                        new XAttribute("OptimisticFailureCount", s.OptimisticFailureCount),
                        new XAttribute("UpdateCount", s.UpdateCount)
                    )
                ),
                new XElement("Collections",
                    new XAttribute("CollectionFetchCount", stats.CollectionFetchCount),
                    new XAttribute("CollectionLoadCount", stats.CollectionLoadCount),
                    new XAttribute("CollectionRecreateCount", stats.CollectionRecreateCount),
                    new XAttribute("CollectionRemoveCount", stats.CollectionRemoveCount),
                    new XAttribute("CollectionUpdateCount", stats.CollectionUpdateCount),
                    from c in stats.CollectionRoleNames
                    let s = stats.GetCollectionStatistics(c)
                    select new XElement("Collection",
                        new XAttribute("RoleName", c),
                        new XAttribute("FetchCount", s.FetchCount),
                        new XAttribute("LoadCount", s.LoadCount),
                        new XAttribute("RecreateCount", s.RecreateCount),
                        new XAttribute("RemoveCount", s.RemoveCount),
                        new XAttribute("UpdateCount", s.UpdateCount)
                    )
                ),
                new XElement("Queries",
                    new XAttribute("QueryCacheHitCount", stats.QueryCacheHitCount),
                    new XAttribute("QueryCacheMissCount", stats.QueryCacheMissCount),
                    new XAttribute("QueryCachePutCount", stats.QueryCachePutCount),
                    new XAttribute("QueryExecutionCount", stats.QueryExecutionCount),
                    new XElement("QueryExecutionMaxTime", stats.QueryExecutionMaxTime),
                    new XElement("QueryExecutionMaxTimeQueryString", stats.QueryExecutionMaxTimeQueryString),
                    from q in stats.Queries
                    let s = stats.GetQueryStatistics(q)
                    select new XElement("Query",
                        new XText(q),
                        new XAttribute("CacheHitCount", s.CacheHitCount),
                        new XAttribute("CacheMissCount", s.CacheMissCount),
                        new XAttribute("CachePutCount", s.CachePutCount),                        
                        new XAttribute("ExecutionAvgTime", s.ExecutionAvgTime),
                        new XAttribute("ExecutionCount", s.ExecutionCount),
                        new XAttribute("ExecutionMaxTime", s.ExecutionMaxTime),
                        new XAttribute("ExecutionMinTime", s.ExecutionMinTime),
                        new XAttribute("ExecutionRowCount", s.ExecutionRowCount)
                    )
                ),
                new XElement("SecondLevelCache",
                    new XAttribute("SecondLevelCacheHitCount", stats.SecondLevelCacheHitCount),
                    new XAttribute("SecondLevelCacheMissCount", stats.SecondLevelCacheMissCount),
                    new XAttribute("SecondLevelCachePutCount", stats.SecondLevelCachePutCount),
                    from r in stats.SecondLevelCacheRegionNames
                    let s = stats.GetSecondLevelCacheStatistics(r)
                    select new XElement("SecondLevelCacheRegion",
                        new XAttribute("Name", r),
                        new XAttribute("CategoryName", s.CategoryName),
                        new XAttribute("ElementCountInMemory", s.ElementCountInMemory),
                        new XAttribute("ElementCountOnDisk", s.ElementCountOnDisk),
                        new XAttribute("HitCount", s.HitCount),
                        new XAttribute("MissCount", s.MissCount),
                        new XAttribute("PutCount", s.PutCount),
                        new XAttribute("SizeInMemory", s.SizeInMemory)
                    )
                )
            );
        }
    }
}