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Re: How to track page splits
Posted by: Rick James
Date: October 02, 2016 12:53PM

"high-volume" -- a modest 100 inserts per second, easily done on commodity hardware?

How much RAM? Are you using InnoDB? What is the value of innodb_buffer_pool_size? It should be about 70% of available RAM if you are using InnoDB on anything but a tiny VM.

Once there is a big enough buffer pool, block splits are mostly irrelevant to the processing -- they will happen in the buffer pool and _eventually_ show up on disk.

If the system seems "too slow", then let's look at specific queries that seem slow (or fast but frequent). Please provide SHOW CREATE TABLE so we know the details of the schema. Then we can discuss block splits _and_ other performance issues.

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