> For the complete documentation index, see [llms.txt](https://cortex-docs.paloaltonetworks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cortex-docs.paloaltonetworks.com/cortex-xdr-agent/8.2-eol/cortex-xdr-agent-for-linux/troubleshooting-resources-for-linux.md).

# Troubleshooting Resources for Linux

| Resource                       | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| ------------------------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Services and Processes         | <p>Services:</p><ul><li><code>/opt/traps/bin/pmd</code>‑ Running with root privileges.</li></ul><p>Processes:</p><ul><li><code>/opt/traps/bin/dypd</code> or <code>/opt/traps/bin/dypdng</code> (depending on the Linux kernel version) - Running with root privileges, <code>pmd</code> starts and stops a single <code>dypd</code> helper process.</li><li><code>/opt/traps/analyzerd/clad</code>- Unprivileged process running inside the sandbox, <code>pmd</code> starts and stops a single <code>analyzerd</code> helper process.</li><li><code>/opt/traps/analyzerd/spmd</code>‑ Unprivileged process running inside the sandbox, <code>pmd</code> starts and stops a single <code>analyzerd</code> helper process.</li><li><code>/opt/traps/python/payload/lted</code>‑ Unprivileged process running inside the sandbox, <code>pmd</code> starts and stops multiple <code>lted</code> processes on demand.</li><li><code>/opt/traps/python/payload/pyxd</code></li></ul> |
| Memory usage of lted processes | All `lted` instances are forks of the same process, sharing most of the physical memory pages. Using `ps` and sum of RSS of all `lted` instances could be misleading, since the same shared memory pages will be counted several times. The correct way to analyze memory usage of `lted` processes is using PSS (Proportional set size), which can be calculated by the `smem` utility.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
| Cortex XDR agent logs          | <p>Indicates information, warnings, and errors related to Cortex XDR that are stored on the endpoint, accessible to privileged users only.</p><ul><li>Installation logs: <code>/var/log/traps-install.log</code></li><li>Agent logs: <code>/var/log/traps/</code></li></ul>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| Kernel Module                  | <p>The installed Cortex XDR agent kernel module. Kernel modules are updated through Content updates. See the admin guide for more information about content updates. Latest content releases are listed <a href="https://docs-cortex.paloaltonetworks.com/r/Cortex-XDR/Cortex-XDR-Content-Update-Releases">here</a>.</p><p>For supported Kernel Modules see <a href="https://docs-cortex.paloaltonetworks.com/r/Cortex-XDR/Linux-Kernel-Versions/Latest-Kernel-Module-Version-Support">here</a>.</p><ul><li>/lib/modules/$<<strong><code>uname -r</code></strong>>/traps/traps.ko</li></ul>                                                                                                                                                                                                                                                                                                                                                                                      |


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