MySQL新技术研究与实践

MySQL新技术研究与实践,[object Object],周振兴@TaobaoDBA,[object Object],iData Forum,[object Object],2010-12-06,[object Object],1,[object Object]

关于主题,[object Object],Performance / Flashcache ...,[object Object],Hardware,[object Object],Software,[object Object],Patches,[object Object],InnoDB-SSD Online file added ......,[object Object],OSC from FB,[object Object]

Performance,[object Object],is about the Capacity,[object Object],30,0000 / s,[object Object],Cache Miss,[object Object],1,0000 / s,[object Object],Capacity20%=== 1亿用户,[object Object],is also about the Cost&&Technology,[object Object]

Hardware,[object Object],Disk / Memory,[object Object],Memory,[object Object]

Why Flashcache,[object Object],SSD vs PCIe-SSD,[object Object],Winner: PCIe-ssd,[object Object]

PICe SSD,[object Object],FusionIO,[object Object],virident,[object Object],[object Object]

Flashcache原理,[object Object],VFS,[object Object],File System,[object Object],/dev/mapper/cachedev,[object Object],这就是Flashcache：,[object Object],将两个块设备，虚拟成一个带缓存的块设备,[object Object],/dev/sdb,[object Object],/dev/sda,[object Object],http://orczhou.com,[object Object],Sample 1.5TB SAS + 320GB Fio,[object Object]

安装,[object Object],./flashcache_create cachedev/dev/fio/dev/sda12,[object Object],mount /dev/mapper/cachedev/u01,[object Object],参考 Flashcache README,[object Object]

WB vs WT,[object Object],Write back,[object Object],High performance,[object Object],main version of flashcache,[object Object],Write through,[object Object],more safe,[object Object],Less performance,[object Object]

Another side,[object Object],Hot data distribution,[object Object],Sample 1.5TB SAS + 320GB Fio,[object Object],Keep is simple , stupid,[object Object],Maybe your are rich,[object Object]

A fixed bug,[object Object],MySQL hungs with Flashcache,[object Object],iostat 1,[object Object],sda12 0 0 0 0 0 0 0 0 0 0 0,[object Object],fio 0 0 0 0 0 0 0 0 0 0 0,[object Object],dm-0 0 0 0 0 0 0 0 0 0 0 100,[object Object],[object Object],[object Object]

压缩特性,[object Object],SamplePage,[object Object]

压缩特性,[object Object],空间节约,[object Object],788M sns_info.ibd,[object Object],376M sns_info.ibd,[object Object],性能,[object Object],BP can hold more data,[object Object]

OtherFeature,[object Object],Buffer Pool,[object Object],[object Object],[object Object]

Why patch,[object Object],Should we change something?,[object Object]

Main Contributor,[object Object],林晓斌 From Taobao.com,[object Object]

Patch.1SSD,[object Object],Write Through,[object Object],读优化,[object Object]

Patch.2 No more connection,[object Object],Close the door,[object Object],Why not ,[object Object],max_connection,[object Object]

Patch.3 Online data added,[object Object],InnoDBshare table space,[object Object],You must restart your Database,[object Object],我们不想因此而降低可用性,[object Object]

Patch 4 Table dml,[object Object],开发中...,[object Object],It’s cool,[object Object]

MySQL新技术研究与实践

MySQL新技术研究与实践

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