Atlas Search runs a new process, called mongot, alongside the mongod process on each host in your Atlas cluster. mongot maintains all Atlas Search indexes on collections in your Atlas databases. The amount of CPU, memory, and disk resources mongot consumes depends on several factors, including our index configuration and the complexity of your queries. Atlas Search alerts measure the amount of CPU and memory used by Atlas Search processes.
The following pages contain recommendations that you can apply when configuring your Atlas Search index and defining your Atlas Search queries to improve performance:
Important
Upgrading to NVMe Storage
Upgrading an Atlas cluster to use NVMe triggers an initial sync on that cluster. Atlas Search is unavailable until both the mongod and mongot finish their initial syncs.
A File Copy Based Initial Sync will always be used to sync all of the nodes of an NVME cluster whenever an initial sync is required.