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HTML rendering created 2025-02-02 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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NAME | SYNOPSIS | DESCRIPTION | COMMAND LINE OPTIONS | FILES | PCP ENVIRONMENT | SEE ALSO | DIAGNOSTICS | COLOPHON |
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OSVIS(1) General Commands Manual OSVIS(1)
osvis - visualize high-level system activity
osvis [-V] [-b bytes] [-d activity] [-i ops] [-m packets] [pmview
options] [interface ...]
osvis displays an high-level overview of performance statistics
collected from the Performance Co-Pilot (PCP(1)) infrastructure.
The display is modulated by the values of the performance metrics
retrieved from the target host (which is running pmcd(1)) or from
the PCP archive log identified by archive. The display is updated
every interval seconds (default 2 seconds).
As in all pmview(1) scenes, when the mouse is moved over one of
the bars, the current value and metric information for that bar
will be shown in the text box near the top of the display. The
height and/or color of the bars is proportional to the performance
metric values relative to the maximum expected activity, as
controlled by the -d, -i and -m options (see below).
The bars in the osvis scene represent the following information:
CPU This column shows CPU utilization, aggregated over all CPUs.
Disk
The first stack is the rate of disk read and write operations
aggregated over all disk spindles. The second bar is the
average time the disks are busy, which approximates average
time utilization of all disks.
Disk Controllers
The average time the disks were busy on each controller, which
approximates the average time utilization of all disks on each
controller.
Load
The three bars represent the average load for the past 1, 5
and 15 minutes. This is normalized by twice the number of
CPUs on the machine.
Mem The stack shows memory utilization by breaking down real
memory into kernel, file system and user usage. The memory
utilization metrics (mem.util) may not be available on all
hosts, so Mem may only show the amount of free memory as a
single bar on some hosts.
Network Input
The two rows of bars show the input byte rate and the input
packet rate for each network interface, except loopback and
slip interfaces.
Network Output
The two rows of bars show the output byte rate and the output
packet rate for each network interface, except for loopback
and slip interfaces.
If any optional interface arguments are specified in the command
line, then just the network interfaces matching the interface
arguments will appear in the Network Input and Network Output
sections. By default, all interfaces will be used. The interface
arguments are used as patterns for egrep(1) matching against the
interface names, so ec would select all external Ethernet
interfaces for a Challenge S.
osvis uses pmview(1), and so the user interface follows that
described for pmview(1), which in turn displays the scene within
an Inventor examiner viewer.
osvis passes most command line options to pmview(1). Therefore,
the command line options -A, -a, -C, -h, -n, -O, -p, -S, -t, -T,
-x, -Z and -z, and the user interface are described in the
pmview(1) man page.
Options specific to osvis are:
-b Controls the maximum expected network throughput, in bytes.
The default value is 65536 bytes.
-d Controls the maximum expected disk utilization, as a
percentage. The default value is 30%.
-i Controls the maximum (normalization) value for the disk
read and write rates. The default value is 100
operations/second.
-m Controls the maximum (normalization) value for the packet
input and packet output rates. The default value is 750
packets/second.
-V The derived configuration file for pmview(1) is written on
standard output. This may be saved and used directly with
pmview if the user wishes to customize the display, or
modify some of the normalization parameters.
$PCP_VAR_DIR/pmns/*
default PMNS specification files
$PCP_VAR_DIR/config/pmlogger/config.osvis
pmlogger(1) configuration file that can be used to create a
PCP archive suitable for display with osvis
Environment variables with the prefix PCP_ are used to
parameterize the file and directory names used by PCP. On each
installation, the file /etc/pcp.conf contains the local values for
these variables. The $PCP_CONF variable may be used to specify an
alternative configuration file, as described in pcp.conf(4).
pmcd(1), pmlogger(1), pmview(1), pcp.conf(4), pcp.env(4) and
pmlaunch(5).
osvis will silently remove those blocks from the scene whose
metrics are not available from the live host or the archive.
This page is part of the PCP (Performance Co-Pilot) project.
Information about the project can be found at
⟨http://www.pcp.io/⟩. If you have a bug report for this manual
page, send it to pcp@groups.io. This page was obtained from the
project's upstream Git repository
⟨https://github.com/performancecopilot/pcp.git⟩ on 2025-02-02.
(At that time, the date of the most recent commit that was found
in the repository was 2025-01-30.) If you discover any rendering
problems in this HTML version of the page, or you believe there is
a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
Performance Co-Pilot OSVIS(1)
Pages that refer to this page: pmview(1)
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HTML rendering created 2025-02-02 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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