使用perf-prof进行Linux系统问题分析。perf-prof是基于perf_event的系统级分析工具,事件在内存中实时处理,可长期运行。触发场景:(1) CPU使用率高、热点分析 (2) 进程状态异常(D/S状态多) (3) 延迟抖动、响应慢 (4) 内存泄露或增长异常 (5) 块设备IO慢 (6) 虚拟机性能问题 (7) 事件聚合统计。核心分析器:profile(CPU采样)、task-state(进程状态)、multi-trace(延迟分析)、kmemleak(内存泄露)、blktrace(IO延迟)、top/sql(聚合统计)、kvm-exit(虚拟化退出)、rundelay(调度延迟)、syscalls(系统调用耗时)。适用于:性能问题定位、内核/应用开发调试、学习理解Linux内核机制(调度、内存、IO、中断等)。
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Skill Details
GitHub Stars
114
GitHub Forks
24
Created
Jan 2026
Last Updated
4 months ago
tools
tools debugging
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