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Allow update rt_period_us and rt_runtime_us 

Currently runc already supports setting realtime runtime and period
before container processes start, this commit will add update support
for realtime scheduler resources.

Signed-off-by: Zhang Wei <zhangwei555@huawei.com>
This commit is contained in:
Zhang Wei 2016-11-04 16:50:42 +08:00
parent 5f24c9a61a
commit 6cd425be2b
3 changed files with 30 additions and 9 deletions
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8
man/runc-update.8.md
View File

@ -20,6 +20,8 @@ accepted format is as follow (unchanged values can be omitted):
"shares": 0,
"quota": 0,
"period": 0,
"realtimeRuntime": 0,
"realtimePeriod": 0,
"cpus": "",
"mems": ""
},
@ -34,8 +36,10 @@ other options are ignored.
# OPTIONS
--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 period to be used for hardcapping (in usecs). 0 to use system default
--cpu-quota value CPU hardcap limit (in usecs). Allowed cpu time in a given period
--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

1
tests/integration/update.bats
View File

@ -47,6 +47,7 @@ function check_cgroup_value() {
[ "$current" -eq "$expected" ]
}
# TODO: test rt cgroup updating
@test "update" {
requires cgroups_kmem
# run a few busyboxes detached

30
update.go
View File

@ -40,6 +40,8 @@ The accepted format is as follow (unchanged values can be omitted):
"shares": 0,
"quota": 0,
"period": 0,
"realtimeRuntime": 0,
"realtimePeriod": 0,
"cpus": "",
"mems": ""
},
@ -59,16 +61,24 @@ other options are ignored.
},
cli.StringFlag{
Name: "cpu-period",
Usage: "CPU period to be used for hardcapping (in usecs). 0 to use system default",
Usage: "CPU CFS period to be used for hardcapping (in usecs). 0 to use system default",
},
cli.StringFlag{
Name: "cpu-quota",
Usage: "CPU hardcap limit (in usecs). Allowed cpu time in a given period",
Usage: "CPU CFS hardcap limit (in usecs). Allowed cpu time in a given period",
},
cli.StringFlag{
Name: "cpu-share",
Usage: "CPU shares (relative weight vs. other containers)",
},
cli.StringFlag{
Name: "cpu-rt-period",
Usage: "CPU realtime period to be used for hardcapping (in usecs). 0 to use system default",
},
cli.StringFlag{
Name: "cpu-rt-runtime",
Usage: "CPU realtime hardcap limit (in usecs). Allowed cpu time in a given period",
},
cli.StringFlag{
Name: "cpuset-cpus",
Usage: "CPU(s) to use",
@ -113,11 +123,13 @@ other options are ignored.
KernelTCP: u64Ptr(0),
},
CPU: &specs.CPU{
Shares: u64Ptr(0),
Quota: u64Ptr(0),
Period: u64Ptr(0),
Cpus: sPtr(""),
Mems: sPtr(""),
Shares: u64Ptr(0),
Quota: u64Ptr(0),
Period: u64Ptr(0),
RealtimeRuntime: u64Ptr(0),
RealtimePeriod: u64Ptr(0),
Cpus: sPtr(""),
Mems: sPtr(""),
},
BlockIO: &specs.BlockIO{
Weight: u16Ptr(0),
@ -162,6 +174,8 @@ other options are ignored.
{"cpu-period", r.CPU.Period},
{"cpu-quota", r.CPU.Quota},
{"cpu-rt-period", r.CPU.RealtimePeriod},
{"cpu-rt-runtime", r.CPU.RealtimeRuntime},
{"cpu-share", r.CPU.Shares},
} {
if val := context.String(pair.opt); val != "" {
@ -197,6 +211,8 @@ other options are ignored.
config.Cgroups.Resources.CpuPeriod = int64(*r.CPU.Period)
config.Cgroups.Resources.CpuQuota = int64(*r.CPU.Quota)
config.Cgroups.Resources.CpuShares = int64(*r.CPU.Shares)
config.Cgroups.Resources.CpuRtPeriod = int64(*r.CPU.RealtimePeriod)
config.Cgroups.Resources.CpuRtRuntime = int64(*r.CPU.RealtimeRuntime)
config.Cgroups.Resources.CpusetCpus = *r.CPU.Cpus
config.Cgroups.Resources.CpusetMems = *r.CPU.Mems
config.Cgroups.Resources.KernelMemory = int64(*r.Memory.Kernel)