buffer head 中文意思是什麼
buffer head
解釋
緩沖頭-
Because of block in head of line ( hol ), input buffer strategy make the whole switch system performances declining drastically at heavy oflbred load, and some improvements of input buffer strategy are put forward to overcoming tlle head of line block. virtual output queues ( voq ) is chosen as input buffer strategy. dpa and ilqf ce1l scheduling algorithms for voq are silllulated
由於輸入緩存的隊頭阻塞使得高負載條件下輸入緩存策略的交換系統各方面性能急劇下降，由此提出了克服輸入緩存隊頭阻塞的改進方法，最後本文決定選用虛擬輸出隊列（ voq ）的輸入緩存策略，並且研究了與虛擬輸出隊列相對應的ilqf （最長隊列優先）和dpa （對角線優先）信元調度演算法，為交換系統的asic設計提供依據。 -
Socket function mainly realizes setting up and initializing service unit socket, initializing service unit and service unit serial and so on. bind funcion primarily binds local address and port for the socket. listen function is to evaluate the max length of server ’ s listening queue. connect function and accept function set aside rate ahead, infrom user ’ s request of establishing virtual circuit to suna, cooperate with suna to establish the connection between client and server, return the result. we make use of three handshake with data protocol and virtual circuit mode, in this way, when we translate data, we can look up communication course according to virtual circuit number, at the same time, there aren ’ t source ip address and port, end ip address and port in the head of data package, the speed of translating data advances in a certain extent. send function and recv function is to send data collaborating with suna, and copy data from the receiving queue of socket to user ’ s buffer. close function cooperate
Socket （ ）函數實現創建、初始化服務元套接字，初始化服務元及服務元序列等。 bind （ ）函數為套接字綁定本地地址和埠號。 connect （ ）和accept （ ）函數主要是根據用戶要求預留帶寬，將用戶的建立虛電路請求轉達給服務元網路體系，協作服務元網路體系採用捎帶數據的三次握手協議建立虛電路，並告訴用戶處理結果，一方面，捎帶數據的三次握手協議在一定程度上可提高數據傳輸速度;另一方面，採用虛電路方式，使得數據通信可直接根據虛電路號查找相應的通信進程，而且數據包的包頭中省去了源ip地址、埠號和目的ip地址、埠號，提高了數據傳輸速率。 -
Most of the problems that are seen are caused by the use of the buffer head and kiobuf and are addressed in the new layer
出現的大部分問題是由對緩沖區頭和kiobuf的使用引起的，在這個新的層中已經得以處理。 -
Under this kind of buffer, to assure different qos cells queue according to their service type. additionally using this kiand of buffer could solve head blocked, shape the output flow, enhance channel utilization and decrease the cost of atm switch
這種緩沖結構根據信元所屬的服務類型排隊，切實保障了不同類型服務的qos ，另外還能夠解決頭阻塞問題，緩和突發通信量，提高資源利用率，並且降低成本。 -
Unlike a direct - drive buffer, an orbital polisher has a special head that rotates in a random, circular motion
與直接拋光機不同，軌道拋光機的特殊頭部牽引機身做任意的循環運動。
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