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CloudLinux X-Ray ​

X-Ray traces PHP performance on alt-PHP domains and shows where a slow request spends its time: plugins, database queries, and external calls. Administrators and account owners both use it, each on their own domains.

It requires CloudLinux with LVE Manager.

Installing ​

The module page is at /admin/modules/cloudlinux-xray, in the Module Manager.

The CloudLinux X-Ray module page

The module reports its real availability rather than appearing usable on a server that cannot run it.

What it does ​

  • Traces real requests, not synthetic ones, so what you see is what visitors experienced.
  • Breaks a request down by plugin, query, and external call.
  • Runs continuously or on demand.
  • Scopes an account owner's tracing to their own domains.

Reach for X-Ray when a site is slow and the cause is not obvious. It answers "which plugin" and "which query", which is where site performance problems usually live.

Giving it to accounts ​

Account owners get the client X-Ray page through the X-Ray feature on their hosting plan.

X-Ray can also be switched off for end users server-wide from LVE Manager's own interface options. When it is, the client page states that the administrator has turned it off rather than failing silently.