System and method for synchronizing time across a computer cluster
    4.
    发明授权
    System and method for synchronizing time across a computer cluster 有权
    通过计算机集群同步时间的系统和方法

    公开(公告)号:US06351821B1

    公开(公告)日:2002-02-26

    申请号:US09767586

    申请日:2001-01-22

    申请人: Duane J. Voth

    发明人: Duane J. Voth

    IPC分类号: G06F112

    CPC分类号: H04J3/0667 G06F1/14

    摘要: A system for time synchronization in a computer cluster is provided. For the system of the present invention a master node sends a SYNC message including a first time stamp to a slave node. The slave node adds a second time stamp and returns the SYNC message to the master node. The master node then adds a third time stamp to the SYNC message. Using the three time stamps, the master node determines if the time clock within the slave node leads or follows the time clock in the master node. The calculation does not depend on the assumption that transmission delays to the slave node are the same as the transmission delays from the node. If the time clocks do not match, the master node sends an INFO message to the slave node informing the slave node of the correct time for clocks within the computer cluster.

    摘要翻译: 提供了一种用于计算机集群中的时间同步的系统。 对于本发明的系统,主节点向从节点发送包括第一时间戳的SYNC消息。 从节点添加第二个时间戳,并将SYNC消息返回给主节点。 主节点然后向SYNC消息中添加第三个时间戳。 使用三个时间戳,主节点确定从节点内的时钟是否导通或跟随主节点中的时钟。 计算不取决于对从节点的传输延迟与来自节点的传输延迟相同的假设。 如果时钟不匹配,则主节点向从节点发送INFO消息,通知从节点计算机集群内的时钟的正确时间。

    System and method for synchronizing time across a computer cluster
    5.
    发明授权
    System and method for synchronizing time across a computer cluster 有权
    通过计算机集群同步时间的系统和方法

    公开(公告)号:US06199169B1

    公开(公告)日:2001-03-06

    申请号:US09212021

    申请日:1998-12-15

    申请人: Duane J. Voth

    发明人: Duane J. Voth

    IPC分类号: G06F112

    CPC分类号: H04J3/0667 G06F1/14

    摘要: A system for time synchronization in a computer cluster is provided. For the system of the present invention a master node sends a SYNC message including a first time stamp to a slave node. The slave node adds a second time stamp and returns the SYNC message to the master node. The master node then adds a third time stamp to the SYNC message. Using the three time stamps, the master node determines if the time clock within the slave node leads or follows the time clock in the master node. The calculation does not depend on the assumption that transmission delays to the slave node are the same as the transmission delays from the node. If the time clocks do not match, the master node sends an INFO message to the slave node informing the slave node of the correct time for clocks within the computer cluster.

    摘要翻译: 提供了一种用于计算机集群中的时间同步的系统。 对于本发明的系统,主节点向从节点发送包括第一时间戳的SYNC消息。 从节点添加第二个时间戳,并将SYNC消息返回给主节点。 主节点然后向SYNC消息中添加第三个时间戳。 使用三个时间戳,主节点确定从节点内的时钟是否导通或跟随主节点中的时钟。 计算不取决于对从节点的传输延迟与来自节点的传输延迟相同的假设。 如果时钟不匹配,则主节点向从节点发送INFO消息,通知从节点计算机集群内的时钟的正确时间。