Bright Chen

> @chenBright Hi, i use the patch(commit:db3673acf276d9baec8aff95afd07bdbc5811437) in my task, but i still get the error: "[wk-10] W1124 07:27:34.681490 82718 0 external/brpc/src/brpc/rdma/rdma_endpoint.cpp:952 CutFromIOBufList] Fail to ibv_post_send: Cannot allocate memory, remote_rq_window_size=57,...

Latest changes: 1. Send CQ and recv CQ share a comp channel. @yanglimingcn 2. When ibv_post_send fails, it prints the number of inflight imm for debugging. @randomkang

> I run three tasks, they lasts for 1742、1551、1852 minutes, and the error of "Fail to ibv_post_send: Cannot allocate memory" does not happpen again. @yanglimingcn @chenBright @randomkang Is this using...

> In fact, I still don't understand the specific function of the 5/4 window in the latest Premiere Pro. I think it would be more reasonable to add a sliding...

> So how should this window be set up reasonably? It seems the number of imm items generated is not quite certain? The window size is related to SendAck. When...

> Since RESERVED_WR_NUM is already present, is the 5/4 no longer needed? Yes. The capacity of RESERVED_WR_NUM is sufficient; by using the imm window to limit the number of imm...

Related PR：#2398