公开(公告)号：US07483990B2

公开(公告)日：2009-01-27

申请号：US10443667

申请日：2003-05-22

申请人： Kavitha Vittal Murthy Baratakke ,  Vinit Jain ,  Ketan Priyakant Pancholi ,  Venkat Venkatsubra

发明人： Kavitha Vittal Murthy Baratakke ,  Vinit Jain ,  Ketan Priyakant Pancholi ,  Venkat Venkatsubra

IPC分类号： G06F15/16

CPC分类号： H04L47/263 ,  H04L47/10 ,  H04L47/193 ,  H04L47/30 ,  H04L67/14 ,  H04L69/16 ,  H04L69/163 ,  H04L69/329

摘要： The server side Transfer Control Protocol is modified so that the server returns a SYNACK message with the window size equal to zero if the server is busy. When a client sends a TCP connection request and receives a synchronization acknowledgement message with the window size equal to zero, the client knows that the server received the connection request and that the server is busy. The client may then send an acknowledgement message to complete the three-way synchronization handshake, thus successfully completing the connection. Thereafter, the client side TCP may probe the server side TCP until a window update message is received from the server. When the server sends a window update message to set the window size to a non-zero size, the client knows that the server is no longer busy and the client application may then use the TCP connection.

摘要翻译： 修改服务器端传输控制协议，以便服务器返回SYNACK消息，如果服务器正忙，则窗口大小等于零。 当客户端发送TCP连接请求并接收到窗口大小等于零的同步确认消息时，客户端知道服务器接收到连接请求，并且服务器正忙。 然后，客户端可以发送确认消息以完成三次同步握手，从而成功地完成连接。 此后，客户端TCP可以探测服务器端TCP，直到从服务器接收到窗口更新消息。 当服务器发送窗口更新消息以将窗口大小设置为非零大小时，客户端知道服务器不再忙，客户端应用程序可能会使用TCP连接。

公开(公告)号：US08578040B2

公开(公告)日：2013-11-05

申请号：US10640847

申请日：2003-08-14

申请人： Dwip N. Banerjee ,  Kavitha Vittal Murthy Baratakke ,  Ketan Priyakant Pancholi ,  Venkat Venkatsubra

发明人： Dwip N. Banerjee ,  Kavitha Vittal Murthy Baratakke ,  Ketan Priyakant Pancholi ,  Venkat Venkatsubra

IPC分类号： G06F15/16

CPC分类号： H04L29/06 ,  H04L69/16 ,  H04L69/163

摘要： A dynamically-enforceable application-controlled quasi-reliable extension to TCP permits a client application to dynamically set a percent loss tolerance for data transmission reliability through network input/output system calls to the TCP, thereby programming the transport layer to optimistically acknowledge non-critical missing frames. The reliability requirement can be dynamically set within TCP to the level of reliability required for specific data frames within the data stream during the data transfer. Based on this loss tolerance specified, the TCP layer makes a determination whether to trigger a retransmission or continue delivering out-of-order frames to the application. A forced acknowledgement frame is sent for each missing packet until the number missing packets causing forced acknowledgments within the current receive buffer frame exceeds the loss tolerance. This process avoids needless retransmissions and permits the TCP data flow and sliding window to advance uninterrupted, thereby providing substantial performance benefits to network throughput.

摘要翻译： 对TCP的动态可执行的应用程序控制的准可靠扩展允许客户端应用程序通过网络输入/输出系统调用TCP动态设置数据传输可靠性的百分比损耗容限，从而编程传输层，以乐观地确认非关键 丢失帧。 可靠性要求可以在TCP内动态设置为在数据传输期间数据流内特定数据帧所需的可靠性水平。 基于指定的丢失容限，TCP层确定是否触发重传，或者继续向应用发送无序帧。 为每个丢失的数据包发送强制确认帧，直到导致当前接收缓冲区帧内的强制确认的数据丢失数据包超过丢失容限。 该过程避免了不必要的重传，并允许TCP数据流和滑动窗口不间断地前进，从而为网络吞吐量提供显着的性能优势。

公开(公告)号：US07742419B2

公开(公告)日：2010-06-22

申请号：US12101765

申请日：2008-04-11

申请人： Kavitha Vittal Murthy Baratakke ,  Vinit Jain ,  Vasu Vallabhaneni ,  Venkat Venkatsubra

发明人： Kavitha Vittal Murthy Baratakke ,  Vinit Jain ,  Vasu Vallabhaneni ,  Venkat Venkatsubra

IPC分类号： H04L1/00

CPC分类号： H04L29/06 ,  H04L69/16 ,  H04L69/161 ,  H04L69/163

摘要： TCP congestion avoidance is implemented upon retransmission of a packet and is reverted back to the original congestion state upon receipt of an early acknowledgement (ACK), indicating reordering of packets, thereby eliminating a needless restriction on TCP bandwidth. Upon receiving an ACK to a retransmitted packet, it is determined if the ACK resulted from receipt of the original reordered packet or the retransmitted packet, based on the arrival time of the ACK at the sender. If the round-trip-time (RTT) for the retransmitted packet is much lower than the average or current calculated RTT for the network link between sender and receiver, then the retransmission occurred as a result of a reordering event, and the congestion window is restored back to its value prior to the retransmission, thereby permitting the network link to continue operating at its original increased throughput.

摘要翻译： TCP拥塞避免在分组重传时实现，并且在接收到指示重新排序分组的早期确认（ACK）时被恢复到原始拥塞状态，从而消除对TCP带宽的不必要的限制。 在向重传的分组接收到ACK时，基于ACK在发送方的到达时间确定ACK是否从接收到原始重新排序的分组或重传分组而产生。 如果重发分组的往返时间（RTT）远低于发送方和接收方之间的网络链路的平均或当前计算的RTT，则重新发送作为重排序事件的结果，拥塞窗口为 在重传之前恢复其值，从而允许网络链路以其原始增加的吞吐量继续运行。

公开(公告)号：US07519699B2

公开(公告)日：2009-04-14

申请号：US10912498

申请日：2004-08-05

申请人： Vinit Jain ,  Kavitha Vittal Murthy Baratakke ,  Jeffrey Paul Messing ,  Venkat Venkatsubra

发明人： Vinit Jain ,  Kavitha Vittal Murthy Baratakke ,  Jeffrey Paul Messing ,  Venkat Venkatsubra

IPC分类号： G06F15/173

CPC分类号： H04L67/2842 ,  H04L49/90 ,  H04L49/9036 ,  H04L69/16 ,  H04L69/161 ,  H04L69/32

摘要： A method, system, and computer program product in a computer-readable medium for delivering data, received from a network, to a storage buffer assigned to an application is proposed. An application designates a communication buffer within a local data processing system for buffering data communicated with an application. The local data processing system reports to a network interface of the local data processing system a memory address of the designated communication buffer, and the data processing system creates a cookie containing the memory address. The data processing system then sends the cookie form the local data processing system to a remote data processing system, such that the remote data processing system may address data directly to the designated communication buffer.

摘要翻译： 提出了一种用于将从网络接收的数据传送到分配给应用的存储缓冲器的计算机可读介质中的方法，系统和计算机程序产品。 应用程序指定本地数据处理系统内的通信缓冲器，用于缓冲与应用程序通信的数据。 本地数据处理系统向本地数据处理系统的网络接口报告指定通信缓冲器的存储器地址，并且数据处理系统创建包含存储器地址的cookie。 然后，数据处理系统将本地数据处理系统的cookie发送到远程数据处理系统，使得远程数据处理系统可以直接将数据寻址到指定的通信缓冲器。

公开(公告)号：US20080186863A1

公开(公告)日：2008-08-07

申请号：US12101765

申请日：2008-04-11

申请人： KAVITHA VITTAL MURTHY BARATAKKE ,  Vinit Jain ,  Vasu Vallabhaneni ,  Venkat Venkatsubra

发明人： KAVITHA VITTAL MURTHY BARATAKKE ,  Vinit Jain ,  Vasu Vallabhaneni ,  Venkat Venkatsubra

IPC分类号： G08C15/00

CPC分类号： H04L29/06 ,  H04L69/16 ,  H04L69/161 ,  H04L69/163

摘要： TCP congestion avoidance is implemented upon retransmission of a packet and is reverted back to the original congestion state upon receipt of an early acknowledgement (ACK), indicating reordering of packets, thereby eliminating a needless restriction on TCP bandwidth. Upon receiving an ACK to a retransmitted packet, it is determined if the ACK resulted from receipt of the original reordered packet or the retransmitted packet, based on the arrival time of the ACK at the sender. If the round-trip-time (RTT) for the retransmitted packet is much lower than the average or current calculated RTT for the network link between sender and receiver, then the retransmission occurred as a result of a reordering event, and the congestion window is restored back to its value prior to the retransmission, thereby permitting the network link to continue operating at its original increased throughput.

摘要翻译： TCP拥塞避免在分组重传时实现，并且在接收到指示重新排序分组的早期确认（ACK）时被恢复到原始拥塞状态，从而消除对TCP带宽的不必要的限制。 在向重传的分组接收到ACK时，基于ACK在发送方的到达时间确定ACK是否从接收到原始重新排序的分组或重传分组而产生。 如果重发分组的往返时间（RTT）远低于发送方和接收方之间的网络链路的平均或当前计算的RTT，则重新发送作为重排序事件的结果，拥塞窗口为 在重传之前恢复其值，从而允许网络链路以其原始增加的吞吐量继续运行。

公开(公告)号：US07568030B2

公开(公告)日：2009-07-28

申请号：US12027044

申请日：2008-02-06

申请人： Dwip N Banerjee ,  Kavitha Vittal Murthy Baratakke ,  Vinit Jain ,  Venkat Venkatsubra

发明人： Dwip N Banerjee ,  Kavitha Vittal Murthy Baratakke ,  Vinit Jain ,  Venkat Venkatsubra

IPC分类号： G06F13/00

CPC分类号： G06F9/5027 ,  G06F9/544 ,  G06F2209/5018 ,  G06F2209/508

摘要： A method, system, and program for monitoring thread usage to dynamically control a thread pool are provided. An application running on the server system invokes a listener thread on a listener socket for receiving client requests at the server system and passing the client requests to one of multiple threads waiting in a thread pool. Additionally, the application sends an ioctl call in blocking mode on the listener thread. A TCP layer within the server system detects the listener thread in blocking mode and monitors a thread count of at least one of a number of incoming requests waiting to be processed and a number of said plurality of threads remaining idle in the thread pool over a sample period. Once the TCP layer detects a thread usage event, the ioctl call is returned indicating the thread usage event with the thread count, such that a number of threads in the thread pool may be dynamically adjusted to handle the thread count.

摘要翻译： 提供了一种用于监视线程使用以动态控制线程池的方法，系统和程序。 在服务器系统上运行的应用程序调用侦听器套接字上的侦听器线程，以便在服务器系统上接收客户端请求，并将客户端请求传递给等待线程池的多个线程之一。 此外，应用程序在侦听器线程上以阻塞模式发送ioctl调用。 服务器系统内的TCP层以阻塞模式检测侦听器线程，并且监视等待被处理的多个传入请求中的至少一个的线程计数，并且线程池中的多个线程在一个样本上保持空闲 期。 一旦TCP层检测到线程使用事件，将返回指示线程计数的线程使用事件的ioctl调用，以使线程池中的线程数可以被动态调整以处理线程计数。

公开(公告)号：US07562133B2

公开(公告)日：2009-07-14

申请号：US12060650

申请日：2008-04-01

申请人： Vinit Jain ,  Kavitha Vittal Murthy Baratakke ,  Jeffrey Paul Messing ,  Venkat Venkatsubra

发明人： Vinit Jain ,  Kavitha Vittal Murthy Baratakke ,  Jeffrey Paul Messing ,  Venkat Venkatsubra

IPC分类号： G06F15/173

CPC分类号： H04L67/2842 ,  H04L49/90 ,  H04L49/9036 ,  H04L69/16 ,  H04L69/161 ,  H04L69/32

摘要： A method, system, and computer program product in a computer-readable medium for delivering data, received from a network, to a storage buffer assigned to an application is proposed. An application designates a communication buffer within a local data processing system for buffering data communicated with an application. The local data processing system reports to a network interface of the local data processing system a memory address of the designated communication buffer, and the data processing system creates a cookie containing the memory address. The data processing system then sends the cookie form the local data processing system to a remote data processing system, such that the remote data processing system may address data directly to the designated communication buffer.

摘要翻译： 提出了一种用于将从网络接收的数据传送到分配给应用的存储缓冲器的计算机可读介质中的方法，系统和计算机程序产品。 应用程序指定本地数据处理系统内的通信缓冲器，用于缓冲与应用程序通信的数据。 本地数据处理系统向本地数据处理系统的网络接口报告指定通信缓冲器的存储器地址，并且数据处理系统创建包含存储器地址的cookie。 然后，数据处理系统将本地数据处理系统的cookie发送到远程数据处理系统，使得远程数据处理系统可以直接将数据寻址到指定的通信缓冲器。

公开(公告)号：US20080183838A1

公开(公告)日：2008-07-31

申请号：US12060650

申请日：2008-04-01

申请人： VINIT JAIN ,  Kavitha Vittal Murthy Baratakke ,  Jeffrey Paul Messing ,  Venkat Venkatsubra

发明人： VINIT JAIN ,  Kavitha Vittal Murthy Baratakke ,  Jeffrey Paul Messing ,  Venkat Venkatsubra

IPC分类号： G06F15/167

CPC分类号： H04L67/2842 ,  H04L49/90 ,  H04L49/9036 ,  H04L69/16 ,  H04L69/161 ,  H04L69/32

摘要： A method, system, and computer program product in a computer-readable medium for delivering data, received from a network, to a storage buffer assigned to an application is proposed. An application designates a communication buffer within a local data processing system for buffering data communicated with an application. The local data processing system reports to a network interface of the local data processing system a memory address of the designated communication buffer, and the data processing system creates a cookie containing the memory address. The data processing system then sends the cookie form the local data processing system to a remote data processing system, such that the remote data processing system may address data directly to the designated communication buffer.

摘要翻译： 提出了一种用于将从网络接收的数据传送到分配给应用的存储缓冲器的计算机可读介质中的方法，系统和计算机程序产品。 应用程序指定本地数据处理系统内的通信缓冲器，用于缓冲与应用程序通信的数据。 本地数据处理系统向本地数据处理系统的网络接口报告指定通信缓冲器的存储器地址，并且数据处理系统创建包含存储器地址的cookie。 然后，数据处理系统将本地数据处理系统的cookie发送到远程数据处理系统，使得远程数据处理系统可以直接将数据寻址到指定的通信缓冲器。

公开(公告)号：US07385923B2

公开(公告)日：2008-06-10

申请号：US10640818

申请日：2003-08-14

申请人： Kavitha Vittal Murthy Baratakke ,  Vinit Jain ,  Vasu Vallabhaneni ,  Venkat Venkatsubra

发明人： Kavitha Vittal Murthy Baratakke ,  Vinit Jain ,  Vasu Vallabhaneni ,  Venkat Venkatsubra

IPC分类号： H04L1/00

CPC分类号： H04L29/06 ,  H04L69/16 ,  H04L69/161 ,  H04L69/163

摘要： TCP congestion avoidance is implemented upon retransmission of a packet and is reverted back to the original congestion state upon receipt of an early acknowledgement (ACK), indicating reordering of packets, thereby eliminating a needless restriction on TCP bandwidth. Upon receiving an ACK to a retransmitted packet, it is determined if the ACK resulted from receipt of the original reordered packet or the retransmitted packet, based on the arrival time of the ACK at the sender. If the round-trip-time (RTT) for the retransmitted packet is much lower than the average or current calculated RTT for the network link between sender and receiver, then the retransmission occurred as a result of a reordering event, and the congestion window is restored back to its value prior to the retransmission, thereby permitting the network link to continue operating at its original increased throughput.

摘要翻译： TCP拥塞避免在分组重传时实现，并且在接收到指示重新排序分组的早期确认（ACK）时被恢复到原始拥塞状态，从而消除对TCP带宽的不必要的限制。 在向重传的分组接收到ACK时，基于ACK在发送方的到达时间确定ACK是否从接收到原始重新排序的分组或重传分组而产生。 如果重发分组的往返时间（RTT）远低于发送方和接收方之间的网络链路的平均或当前计算的RTT，则重新发送作为重排序事件的结果，拥塞窗口为 在重传之前恢复其值，从而允许网络链路以其原始增加的吞吐量继续运行。

公开(公告)号：US07363369B2

公开(公告)日：2008-04-22

申请号：US10687236

申请日：2003-10-16

申请人： Dwip N. Banerjee ,  Kavitha Vittal Murthy Baratakke ,  Vinit Jain ,  Venkat Venkatsubra

发明人： Dwip N. Banerjee ,  Kavitha Vittal Murthy Baratakke ,  Vinit Jain ,  Venkat Venkatsubra

IPC分类号： G06F13/00

CPC分类号： G06F9/5027 ,  G06F9/544 ,  G06F2209/5018 ,  G06F2209/508

摘要： A method, system, and program for monitoring thread usage to dynamically control a thread pool are provided. An application running on the server system invokes a listener thread on a listener socket for receiving client requests at the server system and passing the client requests to one of multiple threads waiting in a thread pool. Additionally, the application sends an ioctl call in blocking mode on the listener thread. A TCP layer within the server system detects the listener thread in blocking mode and monitors a thread count of at least one of a number of incoming requests waiting to be processed and a number of said plurality of threads remaining idle in the thread pool over a sample period. Once the TCP layer detects a thread usage event, the ioctl call is returned indicating the thread usage event with the thread count, such that a number of threads in the thread pool may be dynamically adjusted to handle the thread count.

摘要翻译： 提供了一种用于监视线程使用以动态控制线程池的方法，系统和程序。 在服务器系统上运行的应用程序调用侦听器套接字上的侦听器线程，以便在服务器系统上接收客户端请求，并将客户端请求传递给线程池中等待的多个线程之一。 此外，应用程序在侦听器线程上以阻塞模式发送ioctl调用。 服务器系统内的TCP层以阻塞模式检测侦听器线程，并且监视等待被处理的多个传入请求中的至少一个的线程计数，并且线程池中的多个线程在一个样本上保持空闲 期。 一旦TCP层检测到线程使用事件，将返回指示线程计数的线程使用事件的ioctl调用，以使线程池中的线程数可以被动态调整以处理线程计数。