X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=man%2Fsystemd-cgtop.xml;h=01a0ae216343a9f2b8c39261ae40b94a344bbece;hp=14d47353ccac8949ad822b1a6d28b07774c09637;hb=b408e2a8be6b87fd1796c45a767d00bbb00d7148;hpb=30edf1161600fe1b18f30264f05b4f602eb0e8a3 diff --git a/man/systemd-cgtop.xml b/man/systemd-cgtop.xml index 14d47353c..01a0ae216 100644 --- a/man/systemd-cgtop.xml +++ b/man/systemd-cgtop.xml @@ -49,7 +49,8 @@ - systemd-cgtop OPTIONS + systemd-cgtop + OPTIONS @@ -58,40 +59,37 @@ systemd-cgtop shows the top control groups of the local Linux control group - hierarchy, ordered by their CPU, memory and disk I/O load. The + 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 - top1. + top1. + If systemd-cgtop is not connected + to a tty, only one iteration is performed and no + columns headers are printed. 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. systemd1 - by default places all services in their own control - group in the cpuacct hierarchy, but - not in memory nor - blkio. If resource monitoring for - these resources is required it is recommended to add - blkio and memory - to the DefaultControllers= setting - in /etc/systemd/system.conf (see - systemd.conf5 - for details). Alternatively, it is possible to enable - resource accounting individually for services, by - making use of the ControlGroup= - option in the unit files (See - systemd.exec5 - for details). + 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-control5 + for details. To emphasize this: unless - blkio and memory - are enabled for the services in question with either - of the options suggested above no resource accounting - will be available for system services and the data shown - by systemd-cgtop will be + 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. @@ -109,6 +107,13 @@ text and exits. + + + + Prints a version string and + exits. + + @@ -142,6 +147,29 @@ Order by disk I/O load. + + + + + Run in "batch" mode: + do not accept input and run until the + iteration limit set with + is + exhausted or until killed. This mode + could be useful for sending output + from systemd-cgtop + to other programs or to a + file. + + + + + + + Perform only this many + iterations. + + @@ -162,8 +190,8 @@ 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 + 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. @@ -208,19 +236,26 @@ m i - Change ordering of control groups + Sort the control groups by path, number of tasks, CPU load, - memory usage resp. IO - load. + memory usage, or IO + load, respectively. + + + + % + + Toggle between showing CPU time as + time or percentage. + - - Increase, - resp. decrease refresh - delay. + Increase + or decrease refresh + delay, respectively. @@ -239,6 +274,7 @@ systemd1, systemctl1, systemd-cgls1, + systemd.resource-control5, top1