By setting a time-out interval, you can make sure that a pending network call returns control reliably, instead of waiting for the underlying network stack to time out the request.
Particular attention has been paid to the performance of the network stack.
特别注意了网络协议栈的性能。
It waits on and then handles these events, abstracting away platform-specific behavior and presenting interfaces to make responding to events anywhere in the network stack easy.
Application code such as a text editor resides in userspace, while the underlying facilities of the operating system, such as the network stack, reside in the kernel.
应用程序代码比如编辑器,处于用户层,然而系统底层程序,比如网络栈,处于内核层。
Restarting the computer also helps in most cases (Mac OS X automatically cleans up/tmp when it boots, and the network stack is reset).
多数情况下重新启动也会有帮助(因为 Mac OS X 在启动时会自动清空/tmp 目录,同时也复位网络栈 ) 。
constructing a network stack for a guest operating system of the virtual machine based on the second set of network parameters.
基于第二组网络参数为虚拟机的客户操作系统构建网络堆栈。
For example, a network stack of a guest operating system of the virtual machine may need to be rebuilt, e.g., when the destination computing device has a different attachment circuit for attaching to a virtual private network than an original computing device from which the virtual machine was moved.
In another example, which may be implemented in addition to the example above, the control unit is configured to determine the second set of network parameters for the second attachment circuit, and construct a network stack for a guest operating system of the virtual machine based on the second set of network parameters.
When the message rate exceeds the bandwidth of the network stack, the messages have to be queued-stored in memory till the stack is ready to accept them.
All hypervisors need some operating system-level components-such as a memory manager, process scheduler, input/output (I/O) stack, device drivers, security manager, a network stack, and more-to run VMs.
The computing device may begin executing the migrated virtual machine and provide the network parameters to the migrated virtual machine to cause the migrated virtual machine to rebuild a network stack for an attachment circuit for the one of computing devices 124. In this manner, the migrated virtual machine can become reconnected to the VPN using a different type of attachment circuit.
For example, an LSP that returns the wrong number of bytes sent through an interface can cause applications to go into an infinite loop while waiting for the network stack to indicate that data has been sent.
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