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Windows Server 2012 Networking Performance and ManagementPrabu RambadranProduct Marketing ManagerMicrosoft Corporation
Beyond Virtualization
Windows Server 2012 offers a dynamic, multi-tenant infrastructure that goes beyond virtualization to provide maximum flexibility for delivering and connecting to cloud services.
Modern Workstyle, Enabled
Windows Server 2012empowers IT to provide users with flexible access to data and applications from virtually anywhere on any device with a rich user experience, while simplifying management and helping maintain security, control and compliance.
The Power of Many Servers, the Simplicity of One
Windows Server 2012 offers excellent economics by integrating a highly available and easy to manage multi-server platform with breakthrough efficiency and ubiquitous automation.
Every App, Any Cloud
Windows Server 2012 is a broad, scalable and elastic server platform that gives you the flexibility to build and deploy applications and websites on-premises, in the cloud and in a hybrid environment, using a consistent set of tools and frameworks.
Resource Metering
A two-tenant environment built with Hyper-V in Windows Server 2012
Basic model of Resource Metering
PowerShell CmdletsEnable resource Metering:Get-VM -ComputerName <Host Name> | Enable-VMResourceMetering
Get VM metering data:Get-VM -ComputerName <Host Name> -Name <VM Name> | Measure-VM
IP Address Management(IPAM)
.
.
.
.
.
.
.
.
WS 2012 IPAM
WS 2012 IPAM
Network discoveryNetwork discovery
Multi-server mgmt
(MSM)
Multi-server mgmt
(MSM)
Visibility & auditVisibility & audit
..
..Automatic discovery of
DC, DHCP and DNS servers, and dynamic IP
addresses in use
Centralized configuration and update of MS DHCP/DNS
servers
Track and audit changes and provide real-time
view of status
Address space mgmt
(ASM)
Address space mgmt
(ASM)
Organize, assign, monitor and manage static and dynamic
IPv4/v6 addresses. Integration with SCVMM
In-box solution that complements – and seamlessly integrated with – MS DHCP and DNS offerings
Suitable for MS DHCP/DNS customers looking for an economic, capable and scalable IPAM solution
WS08; WS08 R2 & SPs; WS 2012
Win 8 (RSAT) & WS 2012
WS 2012 in-box
Agentless architecture
Distributed deployment, scale, and DR
IPAM
Performance Features and Improvements
• Processor. One physical processor, which can consist of one or more nodes. A physical processor is the same as a package, a socket, or a CPU.
• Non-uniform memory architecture (NUMA) node. A set of logical processors and cache that are close to one another.
• Core. One processing unit, which can consist of one or more logical processors.
• Logical processor (LP). One logical computing engine from the perspective of the operating system, application, or driver. In effect, a logical processor is a thread.
• Kernel Group. A set of up to 64 logical processors.• Affinity. A preference indicated by a thread, process, or
interrupt for operation on a particular processor, node, or group.
Processor or SocketProcessor or Socket
NUMA NodeNUMA Node
Core Core
LP LP LP
Kernel Group (KGroup)Kernel Group (KGroup)
Processor or SocketProcessor or Socket
NUMA NodeNUMA Node
Core Core
LP LP LP
Processor or SocketProcessor or Socket
NUMA NodeNUMA Node
Core Core
LP LP LP
Processor or SocketProcessor or Socket
NUMA NodeNUMA Node
Core Core
LP LP LP
Processor or SocketProcessor or Socket
NUMA NodeNUMA Node
Core Core
LP LP LP
• Latency. The time required for an operation to complete. Lower is better.
• Scalability. The ability to adapt to increasing demand on system resources. Higher is better.
• Throughput. The amount of data transferred or processed in a given time period. Higher is better.
• Path Length. The number of CPU cycles divided by the throughput. Lower is better.
• Variability / Jitter. Fluctuation in throughput and/or latency. Lower is better.
L
S
T
P
J
• RSC can help by coalescing multiple inbound packets into a larger buffer and effectively reduce per packet CPU cost
• Preliminary data shows up to a 20% reduction in CPU cycles depending on the workload
• All inbox 10G network adapters support the feature and have it on by default
RSC: Multiple Inbound Packets
Coalesced to reduce CPU load
Receive Segment Coalescing (RSC)
• Use RSS to distribute the receive network traffic either across multiple processors or multiple NUMA nodes
• IT Pros should use new Power Shell cmdlets to control RSS behavior based on their workload characteristics
DynamicStatic
NUMA aware
NonNUMA
Profile 1
Profile 2Profile 3(default)
Profile 0 (like WS08
R2)
NIC with 8 RSS queues
Node 0 Node 1 Node 2 Node 3
Incoming Packets
New RSS profiles improve scalability on multi-node servers by distributing TCP/UDP receive traffic across nodes
Receive Side Scaling (Continued)
Single Process
Hardware: 40LPs, 4 NUMA nodes , 10GigE, 128GB RAMWorkload: mixed Web scenario
Note: Measurements reflect release defaults
50%
201%
Multiple Processes (2 and 4)
43%
115%
• Use VMQ to dynamically distribute the receive network traffic across multiple VMs based on destination and network load
• Most inbox 10Gig Ethernet adapters support the feature which is enabled by default
Network IO path without VMQ Network IO path with VMQ
• Registered I/O (RIO) delivers low latency by “pinning” the application memory and reduces CPU cost
• RIO improves predictability with message latency (jitter)
• Example APIs: RIORegisterBuffer and RIOReceive
Winsock Application Winsock Application (E.g. Using localhost as TCP destination)(E.g. Using localhost as TCP destination)
AFDAFD
TCP/IPTCP/IP
NDISNDIS
kernel
user
Win08 R2 Loopback Path
Windows 2008 R2
Windows Server 2012 Loopback Path
New: Shorter Path
• Customer should use new IOCTL SIO_LOOPBACK_FAST_PATH socket option to take new shorter path
• Both sides of connection must set new option but can’t have SO_OOBINLINE, TCP_EXPEDITED_1122, or TCP_STDURG socket options
TCP Loopback fast path
• IT Pro wants to fine tune their system for low latency application and minimize jitter
• Best Practices include:• Disable C-states from BIOS• Set Power Policy to High Performance• Use powercfg utility
• Disable NIC Interrupt Moderation setting• Disable Flow Control• Disable Receive Side Scaling• Disable Receive Segment Coalescing (RSC)• Use thread affinity in Task Manager to
partition work by nodes
• Check out http://technet.microsoft.com/en-us/library/hh831415.aspx
Performance Analysis and Tools
Original Setting is derived from system tuning, empirical
evidence
EXAM
PLE R
ULE
Identifying performance bottlenecks using SPA 3.0
EVERYTHING is configurable through PowerShell
Performance Metric
Loopback Fast Path
Registered I/O (RIO)
Large Send Offload (LSO)
Receive Segmentation Offload (RSC)
Receive Side Scaling (RSS)
Virtual Machine Queues (VMQ)
Remote DMA (RDMA)
Single Root I/O Virtual(SR-IOV)
Lower End-to-End Latency
X X X X
Higher Scalability
X X X
Higher Throughput
X X X X X X X X
Lower Path Length
X X X X X X
Lower Variability
X
Sample Fill
Sample Fill
Sample Fill
Sample Fill
Sample Fill
Sample FillSample Fill
Video Title
WSV321: Windows PowerShell Crash CourseWSV307: Windows Server 2012 IP Address ManagementWSV314: Windows Server 2012 NIC Teaming and Multichannel SolutionsVIR303: An Overview of Hyper-V Networking in Windows Server 2012VIR305: Hyper-V Network Virtualization for Scalable Multi-Tenancy in Windows VIR307: Get Hands-on with the New Hyper-V Extensible Switch in Windows Server 2012WSV14 – HOL: Managing Your Network Infrastructure with IP Address ManagementWSV24 – HOL: Managing Network Infrastructure with Windows Server 2012
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DOWNLOAD Windows Server 2012 Release Candidate
microsoft.com/windowsserver
#TEWSV304 DOWNLOAD Microsoft System Center 2012 Evaluation
microsoft.com/systemcenterHands-On Labs
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