SQL Server 2016 CTP2 Tranaction Log IO Size - 1 June 2015 03:02

Get Process Monitor from Windows Sysinternals

And filters for

Process Name is sqlservr.exe
Path is C:\Databases\justdave1_log.ldf

Create database justdave1

USE [master]
GO

/****** Object:  Database [justdave1]    Script Date: 08/06/2015 00:43:07 ******/
CREATE DATABASE [justdave1]
 CONTAINMENT = NONE
 ON  PRIMARY 
( NAME = N'justdave1', FILENAME = N'C:\Databases\justdave1.mdf' , SIZE = 5120KB , MAXSIZE = UNLIMITED, FILEGROWTH = 1024KB )
 LOG ON 
( NAME = N'justdave1_log', FILENAME = N'C:\Databases\justdave1_log.ldf' , SIZE = 2048KB , MAXSIZE = 2048GB , FILEGROWTH = 10%)
GO

ALTER DATABASE [justdave1] SET COMPATIBILITY_LEVEL = 130
GO

IF (1 = FULLTEXTSERVICEPROPERTY('IsFullTextInstalled'))
begin
EXEC [justdave1].[dbo].[sp_fulltext_database] @action = 'enable'
end
GO

ALTER DATABASE [justdave1] SET ANSI_NULL_DEFAULT OFF 
GO

ALTER DATABASE [justdave1] SET ANSI_NULLS OFF 
GO

ALTER DATABASE [justdave1] SET ANSI_PADDING OFF 
GO

ALTER DATABASE [justdave1] SET ANSI_WARNINGS OFF 
GO

ALTER DATABASE [justdave1] SET ARITHABORT OFF 
GO

ALTER DATABASE [justdave1] SET AUTO_CLOSE OFF 
GO

ALTER DATABASE [justdave1] SET AUTO_SHRINK OFF 
GO

ALTER DATABASE [justdave1] SET AUTO_UPDATE_STATISTICS ON 
GO

ALTER DATABASE [justdave1] SET CURSOR_CLOSE_ON_COMMIT OFF 
GO

ALTER DATABASE [justdave1] SET CURSOR_DEFAULT  GLOBAL 
GO

ALTER DATABASE [justdave1] SET CONCAT_NULL_YIELDS_NULL OFF 
GO

ALTER DATABASE [justdave1] SET NUMERIC_ROUNDABORT OFF 
GO

ALTER DATABASE [justdave1] SET QUOTED_IDENTIFIER OFF 
GO

ALTER DATABASE [justdave1] SET RECURSIVE_TRIGGERS OFF 
GO

ALTER DATABASE [justdave1] SET  DISABLE_BROKER 
GO

ALTER DATABASE [justdave1] SET AUTO_UPDATE_STATISTICS_ASYNC OFF 
GO

ALTER DATABASE [justdave1] SET DATE_CORRELATION_OPTIMIZATION OFF 
GO

ALTER DATABASE [justdave1] SET TRUSTWORTHY OFF 
GO

ALTER DATABASE [justdave1] SET ALLOW_SNAPSHOT_ISOLATION OFF 
GO

ALTER DATABASE [justdave1] SET PARAMETERIZATION SIMPLE 
GO

ALTER DATABASE [justdave1] SET READ_COMMITTED_SNAPSHOT OFF 
GO

ALTER DATABASE [justdave1] SET HONOR_BROKER_PRIORITY OFF 
GO

ALTER DATABASE [justdave1] SET RECOVERY FULL 
GO

ALTER DATABASE [justdave1] SET  MULTI_USER 
GO

ALTER DATABASE [justdave1] SET PAGE_VERIFY CHECKSUM  
GO

ALTER DATABASE [justdave1] SET DB_CHAINING OFF 
GO

ALTER DATABASE [justdave1] SET FILESTREAM( NON_TRANSACTED_ACCESS = OFF ) 
GO

ALTER DATABASE [justdave1] SET TARGET_RECOVERY_TIME = 0 SECONDS 
GO

ALTER DATABASE [justdave1] SET DELAYED_DURABILITY = DISABLED 
GO

ALTER DATABASE [justdave1] SET QUERY_STORE = OFF
GO

ALTER DATABASE [justdave1] SET  READ_WRITE 
GO

The drive is a NTFS filesystem with 4KB cluster:

Create a table and insert a row

DROP TABLE lilbittytable;
CREATE TABLE lilbittytable (tinycol bit);
BEGIN TRAN;
INSERT lilbittytable (tinycol) SELECT 1;
COMMIT;
INSERT lilbittytable (tinycol) SELECT 1;

For the insert we see a 512 byte write to the transaction log