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Re: Reduce Index space
Posted by: Rick James
Date: January 20, 2009 02:12AM

SHOW INNODB STATUS;
gives you some cryptic information, probably including how full the pool is at the moment.

The better way to judge whether you have enough RAM is to see how busy the disk is. If all the data+index will fit into cache, SELECTs won't hit the disk (once it is all cached). At the other extreme, repeated table scans of a big table will repeatedly clobber the cache. Random access is in between -- a combination of cache:disk ratio and frequency of random SELECTs.

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