Para obtener información sobre cómo usar perf, consulta el manual de perf y la configuración de sysctl del kernel.
Habilita la recopilación de volcado de falla del kernel
En el caso poco frecuente de un error irrecuperable del kernel, habilitar la recopilación de volcados de fallas del kernel puede ayudarte a ti y al equipo de Atención al cliente de Cloud a determinar la causa raíz. Para habilitar los volcados de fallas, consulta la Guía del usuario: Recopilación de volcados de fallas del kernel para COS en la documentación de código abierto. En esta guía del usuario, se explica cómo recopilar volcados de fallas del kernel en nodos de GKE con instancias de Container-Optimized OS o de Container-Optimized OS creadas desde Compute Engine.
[[["Fácil de comprender","easyToUnderstand","thumb-up"],["Resolvió mi problema","solvedMyProblem","thumb-up"],["Otro","otherUp","thumb-up"]],[["Difícil de entender","hardToUnderstand","thumb-down"],["Información o código de muestra incorrectos","incorrectInformationOrSampleCode","thumb-down"],["Faltan la información o los ejemplos que necesito","missingTheInformationSamplesINeed","thumb-down"],["Problema de traducción","translationIssue","thumb-down"],["Otro","otherDown","thumb-down"]],["Última actualización: 2025-09-04 (UTC)"],[[["\u003cp\u003eThe \u003ccode\u003eperf\u003c/code\u003e tool is pre-installed on Container-Optimized OS.\u003c/p\u003e\n"],["\u003cp\u003eYou can directly execute \u003ccode\u003eperf\u003c/code\u003e commands on your \u003ccode\u003ecos\u003c/code\u003e instance via the command line.\u003c/p\u003e\n"],["\u003cp\u003eElevated permissions might be required to enable performance events, which can be achieved by using the provided command.\u003c/p\u003e\n"],["\u003cp\u003eFor guidance on utilizing \u003ccode\u003eperf\u003c/code\u003e, consult the \u003ccode\u003eperf\u003c/code\u003e manual and kernel sysctl settings.\u003c/p\u003e\n"]]],[],null,["# Use debugging tools\n\nThis page explains tools that you can use to debug\nContainer-Optimized OS.\n\nRun the `perf` tool on Container-Optimized OS\n---------------------------------------------\n\nBy default, [`perf`](https://perf.wiki.kernel.org/index.php/Main_Page)\nis installed on Container-Optimized OS. You can run `perf` on your `cos`\ninstance from your shell command line.\n\nIf you have limited privilege, you might need to enable the use of the\nperformance events system using the following command: \n\n echo -1 | sudo tee /proc/sys/kernel/perf_event_paranoid\n\nFor information on how to use perf, refer to the\n[`perf` manual](http://man7.org/linux/man-pages/man1/perf.1.html)\nand the kernel\n[sysctl](https://www.kernel.org/doc/Documentation/sysctl/kernel.txt) settings.\n\nEnable kernel crash dump collection\n-----------------------------------\n\nIn the rare event of a kernel panic, enabling kernel crash dump collection can\nhelp you and Cloud Customer Care determine the root cause. To enable crash dumps,\nsee\n[User Guide: Kernel Crash Dump Collection for COS](https://cos.googlesource.com/cos/overlays/board-overlays/+/refs/heads/master/project-lakitu/docs/kdump.md)\nin the open source documentation. This user guide explains how to collect kernel\ncrash dumps on GKE nodes with Container-Optimized OS or\nContainer-Optimized OS instances created from Compute Engine."]]
