NAME

       runc-update - update running container resource constraints

SYNOPSIS

       runc update [option ...] container-id

       runc update -r resources.json|-  container-id

DESCRIPTION

       The update command change the resource constraints of a running container instance.

       The resources can be set using options, or, if -r is used, parsed from JSON provided as a
       file or from stdin.

       In case -r is used, the JSON format is like this:

              {
                  "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
                      }
              }

OPTIONS

       --resources|-r resources.json : Read the new resource limtis from resources.json. Use - to
       read from stdin. If this option is used, all other options are ignored.

       --blkio-weight weight : Set a new io weight.

       --cpu-period num : Set CPU CFS period to be used for hardcapping (in microseconds)

       --cpu-quota num : Set CPU usage limit within a given period (in microseconds).

       --cpu-rt-period num : Set CPU realtime period to be used for hardcapping (in
       microseconds).

       --cpu-rt-runtime num : Set CPU realtime hardcap limit (in usecs). Allowed cpu time in a
       given period.

       --cpu-share num : Set CPU shares (relative weight vs. other containers).

       --cpuset-cpus list : Set CPU(s) to use. The list can contain commas and ranges. For
       example: 0-3,7.

       --cpuset-mems list : Set memory node(s) to use. The list format is the same as for
       --cpuset-cpus.

       --memory num : Set memory limit to num bytes.

       --memory-reservation num : Set memory reservation, or soft limit, to num bytes.

       --memory-swap num : Set total memory + swap usage to num bytes. Use -1 to unset the limit
       (i.e. use unlimited swap).

       --pids-limit num : Set the maximum number of processes allowed in the container.

       --l3-cache-schema value : Set the value for Intel RDT/CAT L3 cache schema.

       --mem-bw-schema value : Set the Intel RDT/MBA memory bandwidth schema.

SEE ALSO

       runc(8).

                                                                                runc-update (8"")