# Number of threads Snow Owl uses a number of thread pools for different types of operations. It is important that it is able to create new threads whenever needed. Make sure that the number of threads that the Snow Owl user can create is at least `4096`. This can be done by setting `ulimit -u 4096` as root before starting Snow Owl, or by setting `nproc` to `4096` in `/etc/security/limits.conf`. The package distributions when run as services under systemd will configure the number of threads for the Snow Owl process automatically. No additional configuration is required. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.b2ihealthcare.com/snow-owl/8.x/index-1/system-settings/nthreads.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.