CPU时间(cpu time):进程可以使用的CPU时间的最大值。 内存使用(memory usage):进程可以使用的最大内存量。 打开文件数(open files):进程可以同时打开的文件数量上限。 并发线程数(threads):进程可以创建的最大线程数。 进程数(processes):用户可以创建的最大进程数。 栈大小(stack size):进程栈的最大大小。 数...
importjava.io.BufferedReader;importjava.io.IOException;importjava.io.InputStreamReader;importjava.io.PrintWriter;importjava.io.StringWriter;importorg.apache.log4j.Logger;/*** 采集CPU使用率*/publicclassCpuUsageextendsResourceUsage {privatestaticLogger log = Logger.getLogger(CpuUsage.class);privatestaticCpuU...
By default, vmstat shows you some general I/O statistics. Although you can get very detailed per-partition resource usage with vmstat -d, you’ll get a lot of output from this option, which might be overwhelming. Instead, try starting out with a tool just for I/O called iostat. 默认情...
getrusage 系统调用提供了一种机制,允许开发者直接获取到进程的资源使用情况,包括 CPU 使用时间、页面错误次数、上下文切换次数等。这些信息对于分析程序的性能、优化代码和改进系统设计都具有重要意义。 #include <sys/resource.h> #include <iostream> int main() { struct rusage usage; getrusage(RUSAGE_SELF, &...
struct task_struct { volatile long state; /* -1 unrunnable, 0 runnable, >0 stopped */ struct thread_info *thread_info; atomic_t usage; unsigned long flags; /* per process flags, defined below */ unsigned long ptrace; int lock_depth; /* Lock depth */ int prio, static_prio; struct...
int getrusage(int who, struct rusage *usage);• 1 who参数可以是以下值之一: RUSAGE_SELF:查询当前进程的资源使用情况。 RUSAGE_CHILDREN:查询已终止且已收集的所有子进程的资源使用情况。 RUSAGE_THREAD(Linux-specific):查询当前线程的资源使用情况。
phys_addr_t __init memblock_alloc_range_nid(phys_addr_t size, phys_addr_t align, phys_addr_t start, phys_addr_t end, int nid, bool exact_nid) { enum memblock_flags flags = choose_memblock_flags(); phys_addr_t found; if (WARN_ONCE(nid == MAX_NUMNODES, "Usage of MAX_NUMNODES...
Using sar command to get system details Now that you have the sar running in the background and collecting the stats, let's see how you can access that information. 💡 By default, SAR captures a snapshot of system resource usage every 10 minutes. You should be able to get some good ...
$ man -f manman (7) - macrostoformat man pagesman (1) - an interfacetotheon-line reference manuals$ man -ftimetime(7) - overviewoftimeandtimerstime(1) - run programsandsummarize system resource usagetime(2) - gettimeinseconds ...
ContainerAppsRevisionsGetRevisionResponse ContainerAppsRevisionsListRevisionsNextOptionalParams ContainerAppsRevisionsListRevisionsNextResponse ContainerAppsRevisionsListRevisionsOptionalParams ContainerAppsRevisionsListRevisionsResponse ContainerAppsRevisionsRestartRevisionOptionalParams ContainerCpuStatistics ContainerCpuUsage Container...