docs: Add performance tuning section

elastic / apm-agent-php

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docs: Add performance tuning section #388

Open bmorelli25 opened 3 years ago

bmorelli25 commented 3 years ago

Every APM agent has a performance tuning section in the documentation. We should add a similar topic to the PHP agent. As of right now, the following configs would be worth explaining (@SergeyKleyman, please add to this list if I've missed anything).

transaction_sample_rate
transaction_max_spans

As additional configs like frame context, headers, request body, etc., are added, we can update these docs.

bmorelli25 commented 3 years ago

@SergeyKleyman, I'll create a draft based on the content we already have and let you PHP-ify it.