system load tool

Operating Systems Linux Debian system load tool

04-27-2004

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system load tool

hi.
i'm searching for a tool that shows the system load of dual-box. something like "top", but with a column for each cpu and (optionally) memory usage shown in kb. it needs to be a command line tool because the box is a server and so it has no xserver running. i've already searched google, debian-lists and this forum but most of the hits are about bbsload or other gui-tools.

thanks in advance

mikester

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LEARN ABOUT LINUX

systemd-cgtop

SYSTEMD-CGTOP(1)                                                   systemd-cgtop                                                  SYSTEMD-CGTOP(1)

NAME

       systemd-cgtop - Show top control groups by their resource usage

SYNOPSIS

       systemd-cgtop [OPTIONS...] [GROUP]

DESCRIPTION

       systemd-cgtop shows the top control groups of the local Linux control group hierarchy, ordered by their CPU, memory, or disk I/O load. The
       display is refreshed in regular intervals (by default every 1s), similar in style to top(1). If a control group path is specified, shows
       only the services of the specified control group.

       If systemd-cgtop is not connected to a tty, no column headers are printed and the default is to only run one iteration. The --iterations=
       argument, if given, is honored. This mode is suitable for scripting.

       Resource usage is only accounted for control groups in the relevant hierarchy, i.e. CPU usage is only accounted for control groups in the
       "cpuacct" hierarchy, memory usage only for those in "memory" and disk I/O usage for those in "blkio". If resource monitoring for these
       resources is required, it is recommended to add the CPUAccounting=1, MemoryAccounting=1 and BlockIOAccounting=1 settings in the unit files
       in question. See systemd.resource-control(5) for details.

       The CPU load value can be between 0 and 100 times the number of processors the system has. For example, if the system has 8 processors, the
       CPU load value is going to be between 0% and 800%. The number of processors can be found in "/proc/cpuinfo".

       To emphasize this: unless "CPUAccounting=1", "MemoryAccounting=1" and "BlockIOAccounting=1" are enabled for the services in question, no
       resource accounting will be available for system services and the data shown by systemd-cgtop will be incomplete.

OPTIONS

       The following options are understood:

       -p, --order=path
           Order by control group path name.

       -t, --order=tasks
           Order by number of tasks/processes in the control group.

       -c, --order=cpu
           Order by CPU load.

       -m, --order=memory
           Order by memory usage.

       -i, --order=io
           Order by disk I/O load.

       -b, --batch
           Run in "batch" mode: do not accept input and run until the iteration limit set with --iterations= is exhausted or until killed. This
           mode could be useful for sending output from systemd-cgtop to other programs or to a file.

       -r, --raw
           Format byte counts (as in memory usage and I/O metrics) with raw numeric values rather than human-readable numbers.

       --cpu=percentage, --cpu=time
           Controls whether the CPU usage is shown as percentage or time. By default, the CPU usage is shown as percentage. This setting may also
           be toggled at runtime by pressing the % key.

       -P
           Count only userspace processes instead of all tasks. By default, all tasks are counted: each kernel thread and each userspace thread
           individually. With this setting, kernel threads are excluded from the counting and each userspace process only counts as one,
           regardless how many threads it consists of. This setting may also be toggled at runtime by pressing the P key. This option may not be
           combined with -k.

       -k
           Count only userspace processes and kernel threads instead of all tasks. By default, all tasks are counted: each kernel thread and each
           userspace thread individually. With this setting, kernel threads are included in the counting and each userspace process only counts as
           on one, regardless how many threads it consists of. This setting may also be toggled at runtime by pressing the k key. This option may
           not be combined with -P.

       --recursive=
           Controls whether the number of processes shown for a control group shall include all processes that are contained in any of the child
           control groups as well. Takes a boolean argument, which defaults to "yes". If enabled, the processes in child control groups are
           included, if disabled, only the processes in the control group itself are counted. This setting may also be toggled at runtime by
           pressing the r key. Note that this setting only applies to process counting, i.e. when the -P or -k options are used. It has not effect
           if all tasks are counted, in which case the counting is always recursive.

       -n, --iterations=
           Perform only this many iterations. A value of 0 indicates that the program should run indefinitely.

       -d, --delay=
           Specify refresh delay in seconds (or if one of "ms", "us", "min" is specified as unit in this time unit). This setting may also be
           increased and decreased at runtime by pressing the + and - keys.

       --depth=
           Maximum control group tree traversal depth. Specifies how deep systemd-cgtop shall traverse the control group hierarchies. If 0 is
           specified, only the root group is monitored. For 1, only the first level of control groups is monitored, and so on. Defaults to 3.

       -M MACHINE, --machine=MACHINE
           Limit control groups shown to the part corresponding to the container MACHINE. This option may not be used when a control group path is
           specified.

       -h, --help
           Print a short help text and exit.

       --version
           Print a short version string and exit.

KEYS

       systemd-cgtop is an interactive tool and may be controlled via user input using the following keys:

       h
           Shows a short help text.

       Space
           Immediately refresh output.

       q
           Terminate the program.

       p, t, c, m, i
           Sort the control groups by path, number of tasks, CPU load, memory usage, or I/O load, respectively. This setting may also be
           controlled using the --order= command line switch.

       %
           Toggle between showing CPU time as time or percentage. This setting may also be controlled using the --cpu= command line switch.

       +, -
           Increase or decrease refresh delay, respectively. This setting may also be controlled using the --delay= command line switch.

       P
           Toggle between counting all tasks, or only userspace processes. This setting may also be controlled using the -P command line switch
           (see above).

       k
           Toggle between counting all tasks, or only userspace processes and kernel threads. This setting may also be controlled using the -k
           command line switch (see above).

       r
           Toggle between recursively including or excluding processes in child control groups in control group process counts. This setting may
           also be controlled using the --recursive= command line switch. This key is not available if all tasks are counted, it is only available
           if processes are counted, as enabled with the P or k keys.

EXIT STATUS

       On success, 0 is returned, a non-zero failure code otherwise.

SEE ALSO

       systemd(1), systemctl(1), systemd-cgls(1), systemd.resource-control(5), top(1)

systemd 237                                                                                                                       SYSTEMD-CGTOP(1)

Debian