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Performance Tweaking


  • SSD is preferred over HDD.
  • Dedicated server is preferred over shared.
  • More RAM can be helpful if your database grows.

Database indexes

By default, EspoCRM has some pre-defined indexes. As your database gets bigger, it's reasonable to create new indexes. What exactly indexes are needed depends on how you use CRM and how you customized it: what custom fields are created, default record orders are set, reports are often run, searches are usually performed, etc.

  • You need indexes for fields that are used for a default order.
  • You need indexes for fields that are often used in filters (reports & regular searches).

See article about how to create indexes.

Database choice

Filters by teams, relations, multi-enums performs faster on MariaDB.

MySQL params


It's recommended to set a value that is about 70% of your RAM.


You may consider increasing this param to speed up ORDER BY or GROUP BY. See more.


Should be large enough. See more.


We recommend to set it to 2.


Disabling total count on list view

It is relevant if there are a lot of records of a specific entity type in the database. In this case, it can be reasonable to disable displaying a record count on the list view for that entity type, since the COUNT function may perform very slow in MySQL and MariaDB.

To disable: Administration > Entity Manager > {entity type} > Edit > check Disable record count.

Create full-text search indexes for large tables. It will improve record lookup.

PHP configuration


You can use a preloading. The file preload.php is available at the root directory.

Using preloading is not likely to bring a significant performance boost. The database usually is a bottleneck in applications like CRM.


Preloading must be disabled before upgrading and extension installation.