第一层负责发现活动网络，轮询服务和设备是否出故障，以及截获或处理来自设备、服务或更高层分布式代理的异步事件。
It is responsible for active network discovery, polling for device outages and services, and intercepting or processing asynchronous events from devices, services, or higher level distributed agents.
这些工具通过UDP使用SNMP来为SNMP代理轮询设备和应用程序指标。
These tools use SNMP over UDP to poll an SNMP agent for device and application metrics.
指定应用程序域并不能防止管理软件轮询设备级指标，如设备加载、CPU利用、内存指标以及环境统计数据。
Specifying an application domain does not prevent management software from polling device-level metrics such as device load, CPU utilization, memory metrics, and environmental statistics.
在基于网络的设备的情况下，为了轮询分发而进行VIP的管理，在两台目标服务器之间串行是有风险的。
In the case of a network-based appliance managing a VIP for a true round-robin distribution, the sequencing on the two destination servers was at risk.
展示了对内存指标的轮询来演示设备指标监控，通过对事务率表格的轮询来演示对特定于应用程序的指标的监控。
A poll of the memory metrics was shown to demonstrate monitoring of device metrics, and a poll of the transaction rate table was shown to demonstrate monitoring of application-specific metrics.
设备驱动程序不是轮询的就是中断驱动的，后一种越来越成为首选的。
Device drivers are either polling or interrupt-driven, with the latter being more generally preferred.
测试表明，TAP算法能够自适应管理域内设备的增加和删除，同时也能在网络拥塞时缩减轮询通信量。
The experiments show that TAP can self-adapt the network structure change such as adding and deleting equipments and can control polling traffic when a network is in congestion state.
这样，使用无阻塞I/O的应用程序无须轮询设备是否可访问，而阻塞访问也可以被类似“中断”的异步通知所取代。
So, use no block I/O application without access to the equipment is polling, and block access can be similar to "break" replaced the asynchronous notification.
这样，使用无阻塞I/O的应用程序无须轮询设备是否可访问，而阻塞访问也可以被类似“中断”的异步通知所取代。
So, use no block I/O application without access to the equipment is polling, and block access can be similar to "break" replaced the asynchronous notification.
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