On 12 July 2016 at 16:02, Dave Taht <[email protected]> wrote: [...] >>> tcp_limit_output_bytes is? >> 262144 > > I keep hoping to be able to reduce this to something saner like 4096 > one day. It got bumped to 64k based on bad wifi performance once, and > then to it's current size to make the Xen folk happier.
Not sure if it's possible. You do need this to be at least as big as a single A-MPDU can get. In extreme 11ac cases it can be pretty big. I recall a discussion from a long time ago and the tcp limit output logic was/is coupled with the assumption that tx-completions always come max 1ms after tx submission. This is rather tricky to *guarantee* on wifi, especially with firmware blobs, big aggregates, lots of stations and retries. Michał -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
