расширенный мониторинг системы и процессов (Advanced System and Process Monitor)
Примечание (Note)
pcp-atop is based on the source code of the atop(1) command from
https://atoptool.nl , maintained by Gerlof Langeveld
(gerlof.langeveld@atoptool.nl), and aims to be command line and
output compatible with it as much as possible. Some features of
that atop command are not available in pcp-atop.
Some features of pcp-atop (such as reporting on the Apache HTTP
daemon, Infiniband, NFS client mounts, hardware event counts, GPU
statistics and per-process TCP and UDP statistics) are only
activated if the corresonding PCP metrics are available. Refer to
the documentation for pmdaapache(1), pmdainfiniband(1),
pmdanfsclient(1), pmdanvidia(1), pmdaperfevent(1) and pmdabcc(1)
for further details on activating these metrics.
The semantics of the per-process network statistics deviate
slightly from the atop(1) tool: instead of the number of TCP/UDP
packets sent/received (which may be inaccurate due to TCP
segmentation offload), pcp-atop shows the number of
tcp_sendmsg()/udp_sendmsg()/etc. kernel calls per process.
