MySQL test environment encountered mmap (xxx bytes) failed; errno 12 Solutions

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Innodb:initializing buffer pool, size =128.0MInnodb:mmap (137363456bytes) failed; Errno Ainnodb:completed Initialization of buffer poolinnodb:fatal Error:cannot allocate memory forThe buffer Pool[error] Plugin'InnoDB'Initfunctionreturned error. [ERROR] Plugin'InnoDB'registration as a STORAGE ENGINE failed. [ERROR] Unknown/Unsupported storage engine:innodb[error] aborting

Too few caches.

 free-m             total       used       free     shared    buffers     Cachedmem:           1152        464        687          0          8         92 -/+ buffers/cache:        363        789Swap:          199         194          5

Increase cache

$DD if=/dev/zero of=/swapfile bs=1m count=1024x768#增加1G的SWAP进去 $Mkswap/swapfile$Swapon/swapfile$ FreeTotal used Freeshared buffers Cachedmem:608476     601432       7044          0        824      88752-/+ Buffers/cache:511856      96620Swap:1048572          0    1048572

It is not recommended to write swapon to/etc/fstab here, it is more secure to write directly to/etc.rc.local.

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Originating From: http://www.cnblogs.com/olinux/p/5144205.html

MySQL test environment encountered mmap (xxx bytes) failed; errno 12 Solutions