.TH NAME
.PP
runc update \- update container resource constraints


.SH SYNOPSIS
.PP
runc update [command options] <container-id>


.SH DESCRIPTION
.PP
The data can be read from a file or the standard input, the
accepted format is as follow (unchanged values can be omitted):

.PP
{
     "memory": {
       "limit": 0,
       "reservation": 0,
       "swap": 0,
       "kernel": 0,
       "kernelTCP": 0
     },
     "cpu": {
       "shares": 0,
       "quota": 0,
       "period": 0,
       "realtimeRuntime": 0,
       "realtimePeriod": 0,
       "cpus": "",
       "mems": ""
     },
     "blockIO": {
       "blkioWeight": 0
     }
   }

.PP
Note: if data is to be read from a file or the standard input, all
other options are ignored.


.SH OPTIONS
.PP
\-\-resources value, \-r value  path to the file containing the resources to update or '\-' to read from the standard input
   \-\-blkio\-weight value         Specifies per cgroup weight, range is from 10 to 1000 (default: 0)
   \-\-cpu\-period value           CPU CFS period to be used for hardcapping (in usecs). 0 to use system default
   \-\-cpu\-quota value            CPU CFS hardcap limit (in usecs). Allowed cpu time in a given period
   \-\-cpu\-rt\-period value        CPU realtime period to be used for hardcapping (in usecs). 0 to use system default
   \-\-cpu\-rt\-runtime value       CPU realtime hardcap limit (in usecs). Allowed cpu time in a given period
   \-\-cpu\-share value            CPU shares (relative weight vs. other containers)
   \-\-cpuset\-cpus value          CPU(s) to use
   \-\-cpuset\-mems value          Memory node(s) to use
   \-\-kernel\-memory value        Kernel memory limit (in bytes)
   \-\-kernel\-memory\-tcp value    Kernel memory limit (in bytes) for tcp buffer
   \-\-memory value               Memory limit (in bytes)
   \-\-memory\-reservation value   Memory reservation or soft\_limit (in bytes)
   \-\-memory\-swap value          Total memory usage (memory + swap); set '\-1' to enable unlimited swap
   \-\-pids\-limit value           Maximum number of pids allowed in the container (default: 0)
   \-\-l3\-cache\-schema            The string of Intel RDT/CAT L3 cache schema
   \-\-mem\-bw\-schema              The string of Intel RDT/MBA memory bandwidth schema