A Practical Hardware Sizing Guide for Sybase IQ

Table of Contents
Introduction............................................................................................................................ 3
Purpose .............................................................................................................................. 3
Terminology ........................................................................................................................ 3
Copyright ............................................................................................................................ 3
What‟s New to IQ 15? ............................................................................................................. 4
Sizing Overview ...................................................................................................................... 6
General Hardware Setup ...................................................................................................... 6
IQ Storage Sizes .................................................................................................................. 6
General Database Configuration ........................................................................................... 6
CPUs ................................................................................................................................... 7
Memory .............................................................................................................................. 7
Storage and I/O .................................................................................................................. 7
Overview of Sybase IQ Memory Management ........................................................................... 8
Operating System and Non-Sybase IQ Memory...................................................................... 8
Sybase IQ Memory .............................................................................................................. 8
The Complete Memory Picture ............................................................................................ 16
How Much RAM for IQ? ...................................................................................................... 16
Swap Space Allocation ....................................................................................................... 17
Example ............................................................................................................................ 17
Overview of Sybase IQ Disk Fundamentals ............................................................................. 18
Read and Write Operations ................................................................................................ 18
IQ_SYSTEM_MAIN ............................................................................................................. 18
Sizing CPUs, Cores, and Processors ........................................................................................ 20
Data Loads and Changes .................................................................................................... 20
Queries ............................................................................................................................. 21
Sizing Memory ...................................................................................................................... 23
Data Loads and Changes .................................................................................................... 23
Queries ............................................................................................................................. 24
Sizing Storage ....................................................................................................................... 25
IQ_SYSTEM_MAIN Sizing ................................................................................................... 25
General Guidelines ............................................................................................................. 25
Storage Stripe Size, Stripe Width, and Block Sizes................................................................ 26
Physical Drives and Device Controllers ................................................................................ 28
Devices for a Single Node Implementation .......................................................................... 29
Devices for a Multi Node Implementation ............................................................................ 29
Local Store Devices ............................................................................................................ 30
IQ Device Placement .......................................................................................................... 30
IQ Device Mapping ............................................................................................................ 30
Sizing Network ...................................................................................................................... 32
Performance ...................................................................................................................... 32
Content Switches and IQ Multiplex...................................................................................... 32
IQ Page Sizes ....................................................................................................................... 34
Concurrent Users ............................................................................................................... 34
Table Row Count ............................................................................................................... 35
Operational Impact ............................................................................................................ 35
Threads ................................................................................................................................ 37
Startup Thread Allocation ................................................................................................... 37
Disk I/O Threads ............................................................................................................... 37
Are Enough Threads Available? ........................................................................................... 38
Final
2