uptime

Springboot Actuator之十一:actuator PublicMetrics

穿精又带淫゛_ 提交于 2019-11-26 17:13:22
前言 接下来的几篇文章我们来分析一下spring-boot-actuator 中在org.springframework.boot.actuate.metrics中的代码,如图: 这里的代码不仅多,而且还比较复杂(类与类之间的关联关系).我们的策略是一点一点的蚕食,本文就先来分析PublicMetrics的实现,关于这部分的类图如下: 本文只分析PublicMetrics, SystemPublicMetrics, TomcatPublicMetrics, DataSourcePublicMetrics.其他的实现–>CachePublicMetrics,MetricReaderPublicMetrics,RichGaugeReaderPublicMetrics 我们后续的文章进行讲解. 解析 PublicMetrics PublicMetrics,暴露指定的Metric通过MetricsEndpoint的接口.实现类应该小心metrics–> 它们提供了一个唯一的名字在application context中,但是它们不能在jvm,分布式环境时唯一的 该类只声明了1个方法,代码如下: // 返回表示当前的状态的indication 通过metrics Collection<Metric<?>> metrics(); 1 2 这里有必要说明一下Metric

What API do I call to get the system uptime?

余生长醉 提交于 2019-11-26 15:59:16
问题 I would like to get the system uptime from within a C application running on a linux-based system. I don't want to call uptime(1) and parse the output, I'd like to call the underlying C API I suspect exists. Anyone know if there is such a call, or does uptime(1) simply process records obtained from wtmp? 回答1: The system call you're looking for is sysinfo(). It's defined in sys/sysinfo.h Its signature is: int sysinfo(struct sysinfo *info) Since kernel 2.4, the structure has looked like this:

进程和

你。 提交于 2019-11-26 14:15:29
uptime uptime 另外还有一个参数 -V(大写),是用来查询版本的 procps是一个实用程序包,主要包括ps top kill等程序主要用来显示与控制一些系统信息,进程状态之类的内容。 以下显示输入uptime的信息: 04:03:58 up 10 days, 13:19, 1 user, load average: 0.54, 0.40, 0.20 当前时间 04:03:58 系统已运行的时间 10 days, 13:19 当前在线用户 1 user 平均负载:0.54, 0.40, 0.20,最近1分钟、5分钟、15分钟系统的负载 uptime 另外还有一个参数 -V(大写),是用来查询版本的 procps是一个实用程序包,主要包括ps top kill等程序主要用来显示与控制一些系统信息,进程状态之类的内容。 以下显示输入uptime的信息: 04:03:58 up 10 days, 13:19, 1 user, load average: 0.54, 0.40, 0.20 当前时间 04:03:58 系统已运行的时间 10 days, 13:19 当前在线用户 1 user 平均负载:0.54, 0.40, 0.20,最近1分钟、5分钟、15分钟系统的负载 来源: https://www.cnblogs.com/2567xl/p/11323645.html

Getting iOS system uptime, that doesn&#39;t pause when asleep

孤街醉人 提交于 2019-11-26 12:07:28
I'm looking for a way to get an absolute, always-incrementing system uptime on iOS. It should return the time since the device was last rebooted, and not be affected by changes to the system date. All the methods I can find either pause when the device is asleep ( CACurrentMediaTime , [NSProcessInfo systemUptime] , mach_absolute_time ) or are changed when the system date changes ( sysctl/KERN_BOOTTIME ). Any ideas? I think I worked it out. time() carries on incrementing while the device is asleep, but of course can be manipulated by the operating system or user. However, the Kernel boottime (a

Retrieve system uptime using C#

最后都变了- 提交于 2019-11-26 06:31:42
问题 Is there a simple way to get a system\'s uptime using C#? 回答1: public TimeSpan UpTime { get { using (var uptime = new PerformanceCounter("System", "System Up Time")) { uptime.NextValue(); //Call this an extra time before reading its value return TimeSpan.FromSeconds(uptime.NextValue()); } } } 回答2: I'm a bit late, but another simple way is to use the GetTickCount64 function, which is available starting with Windows Vista and does not overflow as GetTickCount does: public static TimeSpan

Getting iOS system uptime, that doesn&#39;t pause when asleep

北城余情 提交于 2019-11-26 02:51:24
问题 I\'m looking for a way to get an absolute, always-incrementing system uptime on iOS. It should return the time since the device was last rebooted, and not be affected by changes to the system date. All the methods I can find either pause when the device is asleep ( CACurrentMediaTime , [NSProcessInfo systemUptime] , mach_absolute_time ) or are changed when the system date changes ( sysctl/KERN_BOOTTIME ). Any ideas? 回答1: I think I worked it out. time() carries on incrementing while the device