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description: Tune Linux for KumoMTA performance by adjusting sysctl.conf parameters for file handles, memory buffers, and networking to maximize resource utilization.
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# Linux Tuning for Performance

KumoMTA performance can be optimized by fine tuning system parameters. The parameters listed below are a starting point: research each one and tune it as needed for your own system.

KumoMTA makes heavy use of files, RAM, CPU and network resources. Tuning these parameters can help because a default Linux install assumes resources are shared with many applications, while KumoMTA benefits from using as much of the resource pool as possible.

## Tuning sysctl.conf

The following tuning parameters should be reviewed to ensure they are properly tuned for your workload.

These parameters should be added or updated in `/etc/sysctl.conf`:

* vm.max_map_count
* net.core.rmem_default
* net.core.wmem_default
* net.core.rmem_max
* net.core.wmem_max
* fs.file-max
* net.ipv4.ip_local_port_range
* net.ipv4.tcp_tw_reuse
* kernel.shmmax
* net.core.somaxconn
* vm.nr_hugepages
* kernel.shmmni

This does not necessarily represent the full range of kernel tuning parameters you may need to adjust.

KumoMTA Sponsors should consult with the KumoMTA support team for assistance with performance tuning. More information on sponsoring KumoMTA can be found [here](https://kumomta.com/support).
