鵝的user在NFS client/server間接了台8port dumb switch,沒開jumbo frame等特異功能,可是在client上看到很多NFS server not responding,still trying,但server端loading其實不高,L2也沒看到啥error/dropped/overrun frame,倒是在client端看到不少duplicated ack/TCP window update,鵝發現NFS server端的Ethernet flow control是enabled的,會不會是Ethernet的flow control去干擾到TCP/IP的flow control所至,那關掉Ethernet的flow control會有幫助嗎....