Deploying 8Gb Fibre Channel with Oracle Databases

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Fibre Channel and 8GFC

Fibre Channel remains dominant storage NW
– Highest performance, availability, scalability
8GFC is now >75% of all HBA sales
IO Intensive apps driving need for 8GFC
– Database
– Data warehousing
– Virtualization & private cloud
– Backup
– Rich media
It’s about more than bandwidth– IOPS,
application response time, CPU efficiency, data
integrity, and manageability
– More important than ever with new x86 platforms
and Flash acceleration for databases

© 2011 Emulex Corporation 2

8GFC Improvements vs. 4GFC

Feature 8GFC 4GFC
More IOPS 200k 150k
Latency Improvements Up to 30% faster
Greater Throughput 800Mb/s per port 400Mb/s per port
Server Architecture: MSI-X Yes No
PCIe 2.0 1.0a
Virtualization: vPorts 255 100
Exchanges (XRI) per port 4096 1000
Enhanced Diagnostics Yes No
Non-volatile data Yes No
T10-PI Enhanced Data Integrity Yes No

© 2011 Emulex Corporation
2012 3

Ubiquitous Platform Availability:
Emulex LightPulse 8Gb Fibre Channel HBAs

8Gb/s HBAs
Single

Dual

Quad

8Gb/s Blade


Enhance 4G Infrastructures with 8G HBAs
LightPulse LPe12002 8GFC HBA vs. LPe11002 4GFC HBA
Storage arrays support 4Gb/s port connections
Order entry & data warehousing workload
– Oracle Orion I/O tool, SwingBench load generator
– Benchmarks results:

15% more IOPS Nearly 2x data 16% Improvement in I/O
warehousing throughput Latency


Database-Optimized HBAs
Advantages of Using Emulex 8G HBAs

12
Database Highest
Performance Management Availability
Throughput
•37% greater •Twice the •Best HBA
•15% better total IOPS management in
vs competition reliability: >10
transaction rates half the time million MTBF
•Up to 33% more •20-30% better •Powerful QoS,
effective CPU •Best system
latency availability,
•Self-tuning reliability:
•>2x Dual diagnostics operates 27
performance Channel IOPS • Vision
•7 of 10 Top Cooler
vs competition performance
•Ideal for P2V •No downtime FW
TPC-Cs management
migrations upgrades


Unique Manageability for Databases:
OneCommand Manager
OneCommand Manager (OCM)
• Central lifecycle management &
automation
• Multi-protocol - FC, FCoE, iSCSI, NIC
• Broad OS support
• Unique online FW and driver upgrades
• Powerful deployment, configuration,
availability, QoS, diagnostics management
Provisioning Update
Utilities Utilities
Management
OCM SDK
APIs

OneCommand Manager for
VMware vCenter
• Native software plug-in with vCenter
look and feel
• Extends vCenter with real-time OCM
lifecycle management for Emulex HBAs
and UCNAs


Channel
with Oracle Databases

James Morle

2012 9

Who Am I?

James Morle

– Founder of Scale Abilities Ltd

– Co-founder of the OakTable Network (www.oaktable.net)

– Oracle ACE Director

– Author of Scaling Oracle8i and co-author of Oracle Insights

– Over 20 years large scale Oracle experience, 30 years in
professional IT

2012 10

Who Are Scale Abilities?

UK-based global consultancy specializing in full-stack Oracle-based
architectures
– Full system architecture
– Proactive Performance Management
– Reactive Performance Management

2012 11

Our Emulex Partnership

Commissioned by Emulex for an independent evaluation of their Fibre
Channel products
– Scale Abilities always retains 100% editorial control over published content
– Emulex retains control over whether or not to publish

2012 12

Agenda

A bandwidth and latency refresher

Bandwidth and Business Intelligence

A primer on configuring Oracle for high-bandwidth throughput

A look at the testing performed and results obtained for the
whitepaper entitled “Deploying 8Gbps Fibre Channel
with Oracle Databases”

Q&A

2012 13

Bandwidth and Latency Refresher

What is Bandwidth?
What is Latency?

2012 14

Bandwidth

2 Gbps Pipe 200x 1MB 200x 1MB 200x 1MB 200x 1MB 200x 1MB

2 Gbps Pipe 200x 1MB




2012 15

Latency

2 Gbps Pipe 4KB

2 Gbps Pipe

10ms
4ms

10ms=1/100s=100 sequential reads per second
4ms=1/250s=250 sequential reads per second

2012 16

Bandwidth and Business Intelligence

Bandwidth is a critical success factor in business intelligence (BI)

– BI queries frequently need to access a large proportion of available
data

– Indexed access paths become less efficient than full or partial
scanning

– Scanning rate equals bandwidth

– Higher scan rates mean faster queries

SAN performance matters for getting data from disk to the CPU

2012 17

The Balancing Act

Storage, SAN and Server CPU must be balanced to achieve optimal
throughput
For example: Oracle Database Machine (Exadata)

2012 18

Tuning Focus:
High Bandwidth Oracle

Key configuration points for high bandwidth throughput
– Large I/Os
– Asynchronous Processing and Prefetching
– Parallel Execution

2012 19

Large I/Os

Data Transfer

8KB Read

1MB Read

2012 20

Async I/O

Ability to issue I/O requests without waiting for the response
Allows other tasks (such as processing, or other read requests) to take
place while waiting for I/O to return

2012 21

Blocking vs Async I/O

Servicing Servicing
I/O I/O
Processing Processing

t

Async I/O
Blocking I/O
(and prefetch)
2012 22

Oracle Parallel Execution

Serial Parallel

Oracle Processes

Storage

2012 23

Testing 8GFC

Bandwidth focused tests to demonstrate throughput of 8GFC versus
4GFC
– Large reads
– Async I/O and prefetching
– Parallel Execution

2012 24

Test Hardware

IBM x3850 X5

LPe11002 LPe12002
4Gbps FC 8Gbps FC

Brocade 6510

2x 4Gbps 4x 4Gbps each
(20 total)

Disk Array TMS RamSan x5
(Write-back cached)

2012 25

OneCommand Manager

2012 26

OneCommand Manager

2012 27

OneCommand Manager

2012 28

OneCommand Manager

2012 29

Test Configuration

8GFC and 4GFC cards are enabled and disabled at the switch
Five RamSan-400 SSDs: read and write latency 15 microseconds
Engenio e6000: 48 spindles - RAID-5
dm-multipath used to insulate Oracle ASM from the changing underlying
devices

2012 30

Large Tables

Engenio: ‘BIGTABLE’
RamSan: ‘SSD_BIGTABLE’

SQL> select segment_name,bytes/1048576
size_mb
2 from dba_segments
3 where segment_name like '%BIGTABLE';

SEGMENT_NAME SIZE_MB
-------------------- ----------
SSD_BIGTABLE 12307
BIGTABLE 630618

2012 31

Engenio Query

select /*+ parallel(bt,8) */ count(*) from bigtable
bt

2012 32

RamSan Query

declare
i number;
j number;
begin
for i in 1..1000 loop
select /*+ parallel(bt,32) */ count(*)
into j
from ssd_bigtable bt;
end loop;
end;

2012 33

Key Discoveries

What’s the real difference between 4GFC and 8GFC?
– Equal theoretical bandwidth – 4x4 = 2x8
– Right?

2012 34

Results

1,600

1,400

SSD and Engenio
SSD only
SSD and Engenio
1,200

1,000
Bandwidth MB/s
800

600

400

200

0

4GFC 8GFC 8GFC

2012 35

Further Detail

8GFC -
Both queries active

8GFC -
Only SSD query active

Switch back to 8GFC

4GFC -
Both queries active

Switch between 8GFC
and 4GFC
2012 36

Conclusions

Optimal Oracle configuration is essential to utilize full SAN bandwidth
Tests show a surprising increase in bandwidth of 13%
– Sufficient to knock an hour off an 8-hour batch run, if it spends the majority of its
time waiting on I/O

2012 37

Q&A
Contacts:
– James Morle:
• Email: James.Morle@scaleabilities.co.uk
• Twitter: @jamesmorle @scaleabilities
• Blog: www.scaleabilities.co.uk/author/morlej
– Emulex:
– Barbara Porter
• Email: barbara.porter@emulex.com
• Papers/blogs/tech tips/app notes: www.implementerslab.com

2012 38

Deploying 8Gb Fibre Channel with Oracle Databases

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