I recently hit a several circumstances where it would have been nice to have SO_SNDLOWAT and SO_RCVLOWAT options working for udp (and netlink) sockets.
In poking about the kernel it looks like these are implemented for TCP only. (?) I'm curious if anyone has tried to extend them to more socket types? It seems like it would be useful to have for things like QUIC in particular. NFS? I hit it 3 different ways: * select was returning a socket writable (because it had a byte available), but then EAGAIN when I tried to write a full size packet, so I went back to the select, which returned immediately so I went back to the EAGAIN.... * I completely flooded a multicast queue (11 minutes worth) - while that issue was in the driver, after I fix that, having some means of further backpressure up the stack would be good. * I actually wanted to have recvmmsg block til it had a few packets in it. _______________________________________________ Bloat mailing list Bloat@lists.bufferbloat.net https://lists.bufferbloat.net/listinfo/bloat