diff options
Diffstat (limited to 'src/main.rs')
| -rw-r--r-- | src/main.rs | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/main.rs b/src/main.rs index 579eeb1..eb7e833 100644 --- a/src/main.rs +++ b/src/main.rs @@ -54,6 +54,16 @@ static GLOBAL: Jemalloc = Jemalloc; #[tokio::main] async fn main() { + // This is needed for opening lots of file descriptors, which tends to + // happen more often when using RocksDB and making lots of federation + // connections at startup. The soft limit is usually 1024, and the hard + // limit is usually 512000; I've personally seen it hit >2000. + // + // * https://www.freedesktop.org/software/systemd/man/systemd.exec.html#id-1.12.2.1.17.6 + // * https://github.com/systemd/systemd/commit/0abf94923b4a95a7d89bc526efc84e7ca2b71741 + #[cfg(unix)] + maximize_fd_limit().expect("should be able to increase the soft limit to the hard limit"); + // Initialize DB let raw_config = Figment::new() @@ -550,3 +560,14 @@ fn method_to_filter(method: Method) -> MethodFilter { m => panic!("Unsupported HTTP method: {m:?}"), } } + +#[cfg(unix)] +fn maximize_fd_limit() -> Result<(), nix::errno::Errno> { + use nix::sys::resource::{getrlimit, setrlimit, Resource}; + + let res = Resource::RLIMIT_NOFILE; + + let (_, hard_limit) = getrlimit(res)?; + + setrlimit(res, hard_limit, hard_limit) +} |