I was reading an article on performance on the Nginx site: https://www.nginx.com/blog/tuning-nginx/ One thing mentioned was enabling buffering on the access_log.

However, the directive reference (http://nginx.org/en/docs/http/ngx_http_log_module.html#access_log) says that the default buffer size is 64 KB. Does this mean that buffering is enabled by default, with a size of 64 KB, or that if the buffer is enabled without a specified size, it will be 64 KB?