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rate-limiter: add rate limiter configuration/annotation on VM level

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Add configuration/annotation about network I/O throttling on VM level.
rx_rate_limiter_max_rate is dedicated to control network inbound
bandwidth per pod.
tx_rate_limiter_max_rate is dedicated to control network outbound
bandwidth per pod.

Fixes: #250

Signed-off-by: Penny Zheng <penny.zheng@arm.com>
This commit is contained in:
Penny Zheng
2020-06-09 06:57:50 +00:00
parent ec146a1b39
commit c2645f5d5a
11 changed files with 140 additions and 9 deletions
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5
src/runtime/virtcontainers/pkg/oci/utils_test.go
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@@ -791,6 +791,9 @@ func TestAddHypervisorAnnotations(t *testing.T) {
ocispec.Annotations[vcAnnotations.HotplugVFIOOnRootBus] = "true"
ocispec.Annotations[vcAnnotations.PCIeRootPort] = "2"
ocispec.Annotations[vcAnnotations.EntropySource] = "/dev/urandom"
// 10Mbit
ocispec.Annotations[vcAnnotations.RxRateLimiterMaxRate] = "10000000"
ocispec.Annotations[vcAnnotations.TxRateLimiterMaxRate] = "10000000"
addAnnotations(ocispec, &config)
assert.Equal(config.HypervisorConfig.NumVCPUs, uint32(1))
@@ -823,6 +826,8 @@ func TestAddHypervisorAnnotations(t *testing.T) {
assert.Equal(config.HypervisorConfig.HotplugVFIOOnRootBus, true)
assert.Equal(config.HypervisorConfig.PCIeRootPort, uint32(2))
assert.Equal(config.HypervisorConfig.EntropySource, "/dev/urandom")
assert.Equal(config.HypervisorConfig.RxRateLimiterMaxRate, uint64(10000000))
assert.Equal(config.HypervisorConfig.TxRateLimiterMaxRate, uint64(10000000))
// In case an absurd large value is provided, the config value if not over-ridden
ocispec.Annotations[vcAnnotations.DefaultVCPUs] = "655536"