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htop
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9 Commits

Author SHA1 Message Date
Nathan Scott 5dfb524237 Implement command line and environment handling for pcp htop. 2021-06-09 17:09:29 +10:00
Nathan Scott b424a5b137 Implement shared memory support on the PCP platform 
Uses the mem.util.shared metric (Shmem from meminfo).
 2021-06-09 17:09:29 +10:00
Nathan Scott d3af4e670d Update PCP platform to use the old hostname API call 
Fixes CI builds which are on an old version of PCP.
 2021-06-09 17:09:29 +10:00
Nathan Scott 956b2ae70c Update PCP platform to match latest API changes 
Updates for recent NetworkIO Meter changes, adds support
for the SysArch and HostName Meters.  The SysArch change
is based on work originally by Sohaib Mohamed.
 2021-06-09 17:09:29 +10:00
Nathan Scott c6f20fbcc6 Fixes and cleanups for ZFS Meters and metrics 2021-06-09 17:09:29 +10:00
Nathan Scott 0e7ae9a592 Ensure PCP platform ZramMeter always uses initialized data 2021-06-09 17:09:29 +10:00
Sohaib 407d32e121 Fix PCP ZramMeter in presense of missing zram metrics 2021-06-09 17:09:29 +10:00
Sohaib e1d1a5cec6 Add ZFS ARC statistics and meters to the PCP platform 2021-06-09 17:09:29 +10:00
Nathan Scott c14a45ba35 Add a platform for Performance Co-Pilot (PCP) metrics 
This introduces an initial platform for extracting metrics
using the PCP performance metrics API - PMAPI(3).  It can
be used via the --enable-pcp=yes configure option.

So far I've added support for live localhost metrics only,
and only using pre-defined metrics already found in htop.
If available, all sampling is performed by pmcd(1) - else,
we fallback to htop doing the metric sampling itself (all
below the PMAPI).  When pmcd is used, it may be configured
to run children with elevated privileges, so htop does not
need to be setuid (authentication with pmcd is available).

Additionally, the PMAPI allows us to support archives (for
historical analysis and for automated regression tests in
htop).  We'll need platform-specific command line argument
additions, which isn't yet feasible in htop (not difficult
to add though).

The goal of this first version is minimal impact in terms
of modifying the htop codebase, to introduce key ideas in
PCP (metric namespace, metadata, APIs and so on) and give
us something to discuss, experiment with and build on.
 2021-06-09 17:09:29 +10:00