moonchen opened a new pull request, #13270:
URL: https://github.com/apache/trafficserver/pull/13270
A CPU-usage model that attributes process CPU to workload needs a per-plugin
driver; today plugin CPU has no metric and lands in an unexplained baseline.
Add proxy.process.plugin.<name>.{invocations,bytes,transfers}, keyed by the
plugin DSO basename and bounded by the number of loaded plugins.
invocations counts hook and remap callback dispatches, incremented at
INKContInternal::handle_event and RemapPlugins::run_plugin. bytes and
transfers
attribute PluginVC intercept transport to the owning plugin, captured on
PluginVCCore at alloc. Global plugins load via raw dlopen and previously
carried
no identity, so they are given a PluginThreadContext around TSPluginInit; the
continuations they create then carry plugin identity the same way remap
plugins
already do.
transfers is bumped once per PluginVC write-side pass; it reflects buffering
and
reenable behavior, so it is a diagnostic of transport activity rather than an
external workload driver.
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