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1 Thank you Sponsors! Please visit the sponsors and enter their end-of-day raffles. Event After Party Sky Deck Sports Grille and Lanes at the Mall of America at 7 PM. Want More Free Training? PASSMN meets the 3rd Tuesday of every month. 2 Do not reproduce this document in any way. 1
2 For those who paid for lunch already, we will refund you via PayPal. If you wish to donate to Rebecca CoderDojo, please drop your ticket in the bucket at registration. 3 Gold Sponsors IDERA Pragmatic Works Ware GNet Tail Wind Microsoft Dell Software 4 Do not reproduce this document in any way. 2
3 Silver Sponsors Improving Experts Exchange Pure Storage Bronze Sponsors SQL Sentry COZYROC PASS Blog Sponsors SQLVariant davidklee.net heraflux.com linkedin.com/in/davidaklee Specialties / Focus Areas / Passions: Performance Tuning & Troubleshooting Virtualization Cloud Enablement Infrastructure Architecture Health & Efficiency Capacity Management Founder & Chief Architect Heraflux Technologies 6 Do not reproduce this document in any way. 3
4 (Image source: bit.ly/2aib11h) Heraflux Technologies 7 What is Virtualization? Resources and queues Physical servers Storage and interconnects architecture Inside the Heraflux Technologies 8 Do not reproduce this document in any way. 4
5 Added layer Physical resources Resource queues Very small queue delays When done right Shared everything architecture Heraflux Technologies 9 16 vcpu 128 GB vram 8 vcpu 64 GB vram 2 vcpu 16 GB vram 2 vcpu 16 GB vram 2 vcpu 16 GB vram 2 vcpu 16 GB vram 2 vcpu 16 GB vram 2 vcpu 16 GB vram V I R T U A L I Z A T I O N 150 GHz CPU 4 TB Memory 4x10GbE Network 20 TB Tier 1 Storage 40 TB Tier 2 Storage Heraflux Technologies 10 Do not reproduce this document in any way. 5
6 TASK TASK TASK TASK TASK Hypervisor CPU Scheduler CPU Scheduling Queue Memory Allocator Mem Allocation Queue Disk Scheduler Disk Scheduling Queue Network Scheduler Network Scheduling Queue CPU Execution Mem R / W Disk R / W Network Tran / Rec Heraflux Technologies 11 Hard Limits (Resources) Finite! Single compute node hardware Total cluster compute capacity Storage speed (IOPs, throughput) maximums Interconnect path speed Soft Limits (Queues) Measurable but not finite Memory oversubscription CPU scheduler contention Shared resource utilization Noisy Neighbors Heraflux Technologies Do not reproduce this document in any way. 6
7 Application SQL Server DB SQL Server Instance Interconnects Operating System Virtualization Physical Server Storage Networking Heraflux Technologies 13 Your data has to be stored somewhere Heraflux Technologies 14 Do not reproduce this document in any way. 7
8 Most shared Most critical Most complex Most problematic Slowest piece of the stack Many individual points of contention Heraflux Technologies 15 LUN LUN Controller T1 T2 LUN Controller Disk Pool LUN T3 Heraflux Technologies 16 Do not reproduce this document in any way. 8
9 Test raw performance SQLIO Deprecated! DiskSpd Batch hfxte.ch/diskspd Collect metrics: I/Osper second (IOPs) Latency (ms) Throughput (MB/s) Ceiling vs. Steady State MB/S (THROUGHPUT) DiskSpd - MB/s WORKER THREADS PER CPU RAND R SEQ R RAND W SEQ W Heraflux Technologies Perfmon IOPs -Business Day 15 Min Average :00 0:45 1:30 2:15 3:00 3:45 4:30 5:15 6:00 6:45 7:30 8:15 9:00 9:45 10:30 11:15 12:00 12:45 13:30 14:15 15:00 15:45 16:30 17:15 18:00 18:45 19:30 20:15 21:00 21:45 22:30 23:15 CounterMax CounterMin CounterAvg MaxVal Heraflux Technologies 18 Do not reproduce this document in any way. 9
10 Heraflux Technologies 19 Heraflux Technologies 20 Do not reproduce this document in any way. 10
11 Compute resources underneath your data Heraflux Technologies 21 (Img src: 22 Do not reproduce this document in any way. 11
12 Virtual SQL Servers. Actual Performance (Img src: Heraflux Technologies 23 Manufacturer Sockets Cores Speed vs. GHz Logical vs. Physical Hyperthreading 100% - % Consumed Heraflux Technologies Do not reproduce this document in any way
13 Virtual SQL Servers. Actual Performance (Img src: CPU CPU CPU CPU Memory (Img src: Heraflux Technologies Do not reproduce this document in any way
14 Virtual SQL Servers. Actual Performance (Img src: Heraflux Technologies 27 Remote memory lookup slower (Img src: Heraflux Technologies Do not reproduce this document in any way
15 Sample Cisco UCS memory config Slot & chip placement Heraflux Technologies 29 (Src: page 44) vhardware configuration details matter Heraflux Technologies 30 Do not reproduce this document in any way. 15
16 Time in queue = time lost from Everything in a must be scheduled including idle resources Queue processing is not always FIFO Fit workload in ideal sized footprint Heraflux Technologies 31 SQL Server Available Worker Threads 1x vsocket@ 16 vcores SQL Server psocket(12c) Physical Server psocket Heraflux Technologies 32 Do not reproduce this document in any way. 16
17 SQL Server Available Worker Threads (Limit 8 per parallel query) vsocket vsocket SQL Server psocket Physical Server psocket Heraflux Technologies 33 Fit inside one physical NUMA node Split if too large NUMA layers Physical server Hypervisor Windows OS SQL Server vcpus 1x10 1x12 CPU Socket vcpus vcpus 2x8 1x12 CPU Socket Do not reproduce this document in any way. 17
18 Example: 16 vcpu What s better? 2 vsocketx 8 vcore? 4 vsocketx 4 vcore? 8 vsocketx 2 vcore? 1 vsocketx 16 vcore? Varies by workload, hardware Test it for yourself! TRANSACTIONS / MIN HammerDB & vnuma - 16 vcpus # USERS 4x4 8x2 2x8 1x16 Heraflux Technologies 35 Heraflux Technologies 36 Do not reproduce this document in any way. 18
19 Heraflux Technologies 37 Heraflux Technologies 38 Do not reproduce this document in any way. 19
20 Right amount of vcpu and vram resources Physical world = Size for end of life Virtual world = Size for right now Repeat right-sizing analysis quarterly More depth (PASS Summit 2014 preso): bit.ly/1lishc6 39 SERVER A - CPU CONSUMPTION SystemCPUConsumption UserCPUConsumption Percent Consumed Minute of Day 16 pcpus Present Heraflux Technologies 40 Do not reproduce this document in any way. 20
21 60 SERVER A -CPU Consumption by vcpu CPU0 CPU1 CPU10 CPU11 CPU12 CPU13 CPU14 CPU15 CPU2 CPU3 CPU4 CPU5 CPU6 CPU7 CPU8 CPU9 16 pcpus Present Heraflux Technologies 41 SERVER B - CPU CONSUMPTION SystemCPUConsumption UserCPUConsumption Percent Consumed Minute of Day 16 pcpus Present Heraflux Technologies 42 Do not reproduce this document in any way. 21
22 120 SERVER B -CPU Consumption by vcpu NUMA Imbalance CPU0 CPU1 CPU10 CPU11 CPU12 CPU13 CPU14 CPU15 CPU2 CPU3 CPU4 CPU5 CPU6 CPU7 CPU8 CPU9 16 pcpus Present Heraflux Technologies 43 C: -Operating System D: -SQL Server Instance Home E: -System Databases (master, model, msdb) * F: -User Database Data (1 of X) G: -User Database Log (1 of Y) H: -TempDB Y: -Windows Page file ** Z: - Backups Adjust as necessary (but stay standardized) Heraflux Technologies 44 Do not reproduce this document in any way. 22
23 Heraflux Technologies 45 Virtualization works. Equivalent performance if done right vcpu / vnuma configuration vdisk configuration SQL Server parallelization settings Heraflux Technologies 46 Do not reproduce this document in any way. 23
24 @kleegeek davidklee.net heraflux.com linkedin.com/in/davidaklee Heraflux Technologies 47 Do not reproduce this document in any way. 24
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