Mysql talk

Linux and Mysql Tuning Getting the most from your hardware

The Ubiquitous “About Me” ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Your Mileage May Vary ,[object Object],[object Object],[object Object]

What to measure? ,[object Object],[object Object]

Measure YOUR application ,[object Object],[object Object]

Talk outline ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Why? ,[object Object],[object Object],[object Object],[object Object]

IO Scheduler Tuning ,[object Object],[object Object],[object Object],[object Object]

VM on ESX with no-cache RAID1 ,[object Object],[object Object],Switch to NoOP Switch to NoOP

VM on ESX no-cache RAID1 ,[object Object],[object Object],Switch to CFQ

Lots of IO where ordering doesn't matter ,[object Object],[object Object],Switch to NoOP Switch to NoOP

But it saves CPU, right? ,[object Object],Policy switched

Innodb Thread Concurrency ,[object Object],[object Object],[object Object],[object Object]

Test! Benchmark first, then real life ,[object Object],[object Object],[object Object]

Results will vary with # users ,[object Object]

My results, not yours ,[object Object],[object Object],[object Object]

More InnoDB threads – more efficient use of CPU 8 Innodb threads 4 Innodb Threads 16 Innodb Threads ∞ Innodb Threads

Swapping ,[object Object],[object Object],[object Object]

Disable swap? ,[object Object],[object Object],[object Object]

Easy things first ,[object Object],[object Object],[object Object]

NUMA factors ,[object Object],[object Object],[object Object],[object Object]

Numa, II ,[object Object],[object Object],[object Object],[object Object],[object Object]

HugePages ,[object Object],[object Object],[object Object],[object Object]

HugePages ,[object Object],[object Object],[object Object]

Summary ,[object Object],[object Object],[object Object],[object Object],[object Object]

That's it! ,[object Object],[object Object],[object Object],[object Object]

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