X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=man%2Fsystemd.resource-control.xml;h=8f4e7a3f163c610e1ba40780389e18565a561471;hp=a1f63dd66b315001c44f3e3d8a93515e97060c1a;hb=b975b0d514321f169b3c4599a8ea92e13741b4e4;hpb=db785129c9bce9294a118484cbc9bb6935ca34c2 diff --git a/man/systemd.resource-control.xml b/man/systemd.resource-control.xml index a1f63dd66..8f4e7a3f1 100644 --- a/man/systemd.resource-control.xml +++ b/man/systemd.resource-control.xml @@ -1,25 +1,24 @@ - - + @@ -65,7 +64,7 @@ along with systemd; If not, see . sockets, mount points, and swap devices share a subset of configuration options for resource control of spawned processes. Internally, this relies on the Control Groups - kernel concept for organizing processes in a hierarchial tree of + kernel concept for organizing processes in a hierarchical tree of named groups for the purpose of resource management. This man page lists the configuration options shared by @@ -119,22 +118,24 @@ along with systemd; If not, see . Assign the specified CPU time share weight to the - processes executed. Takes an integer value. This controls - the cpu.shares control group attribute, - which defaults to 1024. For details about this control group - attribute, see cpu.shares control group + attribute, which defaults to 1024. For details about this + control group attribute, see sched-design-CFS.txt. - The available CPU time is split up among all units within one - slice relative to their CPU time share weight. + The available CPU time is split up among all units within + one slice relative to their CPU time share weight. While StartupCPUShares= only applies to the startup phase of the system, - CPUShares= applies to the later runtime - of the system, and if the former is not set also to the - startup phase. This allows priorizing specific services at - boot-up differently than during runtime. - - Implies CPUAccounting=true. + CPUShares= applies to normal runtime of + the system, and if the former is not set also to the startup + phase. Using StartupCPUShares= allows + prioritizing specific services at boot-up differently than + during normal runtime. + + Those options imply + CPUAccounting=true. @@ -143,20 +144,17 @@ along with systemd; If not, see . Assign the specified CPU time quota to the processes - executed. Takes a percentage value (suffixed with "%") or an - absolute time (suffixed by one of the common time units, us, - ms, s, ...). The percentage specifies how much CPU time the - unit shall get at maximum, relative to the total CPU time - available on one CPU. Use values > 100% for alloting CPU - time on more than one CPU. If an absolute time is specified - the processes of this unit will get this much absolute time - within each quota period, at maximum. This controls the + executed. Takes a percentage value, suffixed with "%". The + percentage specifies how much CPU time the unit shall get at + maximum, relative to the total CPU time available on one + CPU. Use values > 100% for allotting CPU time on more than + one CPU. This controls the cpu.cfs_quota_us control group attribute. For details about this control group attribute, see sched-design-CFS.txt. - Example: CPUShares=20% ensures that + Example: CPUQuota=20% ensures that the executed processes will never get more than 20% CPU time on one CPU. @@ -164,20 +162,6 @@ along with systemd; If not, see . - - CPUQuotaPeriodSec= - - - Specify the CPU quota period to use. Defaults to - 100ms. This controls the cpu.cfs_period_us - control group attribute. For details about this control - group attribute, see sched-design-CFS.txt. - - Implies CPUAccounting=true. - - - MemoryAccounting= @@ -245,7 +229,7 @@ along with systemd; If not, see . applies to the startup phase of the system, BlockIOWeight= applies to the later runtime of the system, and if the former is not set also to the - startup phase. This allows priorizing specific services at + startup phase. This allows prioritizing specific services at boot-up differently than during runtime. Implies @@ -409,6 +393,20 @@ along with systemd; If not, see . + + Delegate= + + + Turns on delegation of further resource control + partitioning to processes of the unit. For unprivileged + services (i.e. those using the User= + setting) this allows processes to create a subhierarchy + beneath its control group path. For privileged services and + scopes this ensures the processes will have all control + group controllers enabled. + + +