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Justify epoll_instances config existing

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This commit is contained in:
Andrew Noyes
2025-08-22 16:47:08 -04:00
parent 12d4289568
commit f51f257df6
4 changed files with 34 additions and 7 deletions
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5
src/config.cpp
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@@ -85,11 +85,10 @@ void ConfigParser::parse_server_config(const auto &toml_data,
parse_field(srv, "max_request_size_bytes", config.max_request_size_bytes);
parse_field(srv, "io_threads", config.io_threads);
// Set epoll_instances default to io_threads/2 (min 1) if not explicitly
// configured
// Set epoll_instances default to io_threads if not explicitly configured
bool epoll_instances_specified = srv.contains("epoll_instances");
if (!epoll_instances_specified) {
config.epoll_instances = std::max(1, config.io_threads / 2);
config.epoll_instances = config.io_threads;
} else {
parse_field(srv, "epoll_instances", config.epoll_instances);
}

4
src/config.hpp
View File

@@ -21,8 +21,8 @@ struct ServerConfig {
/// Number of I/O threads for handling connections and network events
int io_threads = 1;
/// Number of epoll instances to reduce epoll_ctl contention (default:
/// io_threads/2, max: io_threads)
int epoll_instances = 2;
/// io_threads, max: io_threads)
int epoll_instances = 1;
/// Event batch size for epoll processing
int event_batch_size = 32;
/// Maximum number of concurrent connections (0 = unlimited)