Building on the what-you-need-only-when-you-need-it concept of Mantis, Pixie enables you to create "Pixie Edge Modules" (PEMs). PEMs are full body request traces (via eBPF); or PEMs can be system metrics or K8s events. There is no need for any code-changes because Pixie runs underneath your containers, services, and applications; Pixie guarantees less than 5% overhead. Custom metrics, traces & logs can be integrated into Pixie Command Module (PCMs) for your own, arbitrary traces or metrics. The PCMs run in your K8s cluster and are operated by command line. It's a much-richer observability platform than a mesh. Let's see if the concept takes off.
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