New socket statistics utility - pcp-ss . New metric collector - denki denki (power), and updates to sockets, ds389, HA cluster and Linux kernel metrics. Further improvements to threading and memory handling in the pmproxy archive discovery services and REST API.

Minor bug fix release. Major performance optimizations for the pmproxy REST APIs, archive discovery and time series queries, as well as for the Linux proc metrics. Fixes and new configuration options for the pmrep utility.

Scalability and memory footprint improvements in the pmproxy service. pcp-atop allows process filtering based on state, sorting threads per process and additional reporting features (kernel wait channel symbol for blocked processes, VM OOM process killing, swap-cached, KSM, ZFS and zswap memory metrics, per-process locked memory and scheduler run delay metrics). pcp-htop added the SysArch Meter and ZFS ARC statistics. pmrep allows specifying instances with PID. New Linux kernel metrics for fibre channel HBAs, pseudo TTYs and much improved interrupts metric handling.

New Linux ZFS, High Availability (Pacemaker) and detailed sockets metrics. pmproxy memory management improvements.

Performance improvements and process network statistics support in the pcp-atop command. Experimental pcp-htop command added. Improvements to the pmproxy REST API for fast, scalable pmseries querying.

Minor bug fix release - especially in pmproxy REST API, KVM, XFS and other Linux kernel metrics. Support for hv_gpci and hv_24x7 core-level events in the perfevent agent. New online version of the PCP Guides at readthedocs

Minor bug fix release. Per-context derived metrics support, new REST APIs. Support Windows authentication mode in the SQL Server agent. Improved metric labels handling in the OpenMetrics agent, pcp2elasticsearch and pcp2spark utilities.