In the future, you can pull the latest version of perf_counter from the menuPacks->Check For Updatesas shown below: Open the RTE management window, find theUtilitiesand select theCoreinside perf_counter as shown below: Includeperf_counter.hin corresponding c source file: ...
os Revert "compatible with rt-thread nano" 1年前 .gitignore release v2.1.0 2年前 Doxyfile v2.2.2 2年前 LICENSE Initial commit 4年前 README.md v2.2.4 1年前 SConscript remove __PERF_COUNT_PLATFORM_SPECIFIC_HEADER 1年前 perf_counter.c ...
perf在中断来临时,获取OS在中断之前所记录的关键性能指标perf工具的数据来源自PMC(Performance Monitoring Counter),PMC 来自 PMU(Performance Monitoring Unit)PMU(性能监控单元) 是处理器中的一个硬件子系统,用于监控和分析 CPU 的运行状况。它负责跟踪各种硬件事件(例如指令执行、缓存命中、分支预测等),并将这些事件...
public static KnownPerfCounterDataSourceStreams fromString(String name) Creates or finds a KnownPerfCounterDataSourceStreams from its string representation. Parameters: name - a name to look for. Returns: the corresponding KnownPerfCounterDataSourceStreams.values public static Collection values()...
总结一下,要愉快的跟踪更完备的信息,就要在编译软件时打开符号表的支持(gcc -g),开启annotate的支持(gcc -ggdb),以及Stack trace的支持(gcc -fno-omit-frame-pointer)。 perf pre-defined event说明 Hardware [Cache] Events: CPU相关计数器 CPU周期、指令重试,内存间隔周期、L2CACHE miss等 ...
/5g_build/5g_Main/$ perf stat -p 31404 ^C Performance counter stats for process id '31404': 18958.321499 task-clock (msec) # 1.000 CPUs utilized 28 context-switches # 0.001 K/sec 6 cpu-migrations # 0.000 K/sec 0 page-faults # 0.000 K/sec <not supported> cycles <not supported> inst...
Performance counter stats for 'gzip file1': 1920.159821 task-clock # 0.991 CPUs utilized 13 context-switches # 0.007 K/sec 0 CPU-migrations # 0.000 K/sec 258 page-faults # 0.134 K/sec 5,649,595,479 cycles # 2.942 GHz [83.43%]
void perfmon_counter_overflow(struct idxd_device *idxd); void perfmon_init(void); void perfmon_exit(void); #else static inline int perfmon_pmu_init(struct idxd_device *idxd) { return 0; } static inline void perfmon_pmu_remove(struct idxd_device *idxd) {} static inline void perfmon_...
-v, --verbose be more verbose(show counter open errors, etc) 使用命令perf stat -p <pid>可以采集某一个进程的运行信息,<pid>可以通过top工具获得: top - 16:51:29 up24days,1min,2users, load average: 0.48, 0.68, 1.00 Tasks:26total,2running,24sleeping,0stopped,0zombie ...
perf 除了可以采样(使用perf record)(包括call stack trace),还可以用于event计数。 perf stat就是用于event计数的,可以跟踪指定命令的event计数。 NAME perf-stat - Run a command and gather performance counter statistics SYNOPSIS perf stat [-e <EVENT> | --event=EVENT] [-a] perf stat [-e <EVENT...