@@ -46,6 +46,9 @@ type NodeStats struct {
4646 // Stats pertaining to memory (RAM) resources.
4747 // +optional
4848 Memory * MemoryStats `json:"memory,omitempty"`
49+ // Stats pertaining to IO resources.
50+ // +optional
51+ IO * IOStats `json:"io,omitempty"`
4952 // Stats pertaining to network resources.
5053 // +optional
5154 Network * NetworkStats `json:"network,omitempty"`
@@ -127,6 +130,9 @@ type PodStats struct {
127130 // Stats pertaining to memory (RAM) resources consumed by pod cgroup (which includes all containers' resource usage and pod overhead).
128131 // +optional
129132 Memory * MemoryStats `json:"memory,omitempty"`
133+ // Stats pertaining to IO resources consumed by pod cgroup (which includes all containers' resource usage and pod overhead).
134+ // +optional
135+ IO * IOStats `json:"io,omitempty"`
130136 // Stats pertaining to network resources.
131137 // +optional
132138 Network * NetworkStats `json:"network,omitempty"`
@@ -159,6 +165,9 @@ type ContainerStats struct {
159165 // Stats pertaining to memory (RAM) resources.
160166 // +optional
161167 Memory * MemoryStats `json:"memory,omitempty"`
168+ // Stats pertaining to IO resources.
169+ // +optional
170+ IO * IOStats `json:"io,omitempty"`
162171 // Metrics for Accelerators. Each Accelerator corresponds to one element in the array.
163172 Accelerators []AcceleratorStats `json:"accelerators,omitempty"`
164173 // Stats pertaining to container rootfs usage of filesystem resources.
@@ -225,6 +234,9 @@ type CPUStats struct {
225234 // Cumulative CPU usage (sum of all cores) since object creation.
226235 // +optional
227236 UsageCoreNanoSeconds * uint64 `json:"usageCoreNanoSeconds,omitempty"`
237+ // CPU PSI stats.
238+ // +optional
239+ PSI * PSIStats `json:"psi,omitempty"`
228240}
229241
230242// MemoryStats contains data about memory usage.
@@ -252,6 +264,39 @@ type MemoryStats struct {
252264 // Cumulative number of major page faults.
253265 // +optional
254266 MajorPageFaults * uint64 `json:"majorPageFaults,omitempty"`
267+ // Memory PSI stats.
268+ // +optional
269+ PSI * PSIStats `json:"psi,omitempty"`
270+ }
271+
272+ // IOStats contains data about IO usage.
273+ type IOStats struct {
274+ // The time at which these stats were updated.
275+ Time metav1.Time `json:"time"`
276+ // IO PSI stats.
277+ // +optional
278+ PSI * PSIStats `json:"psi,omitempty"`
279+ }
280+
281+ // PSI statistics for an individual resource.
282+ type PSIStats struct {
283+ // PSI data for all tasks in the cgroup.
284+ Full PSIData `json:"full"`
285+ // PSI data for some tasks in the cgroup.
286+ Some PSIData `json:"some"`
287+ }
288+
289+ // PSI data for an individual resource.
290+ type PSIData struct {
291+ // Total time duration for tasks in the cgroup have waited due to congestion.
292+ // Unit: nanoseconds.
293+ Total uint64 `json:"total"`
294+ // The average (in %) tasks have waited due to congestion over a 10 second window.
295+ Avg10 float64 `json:"avg10"`
296+ // The average (in %) tasks have waited due to congestion over a 60 second window.
297+ Avg60 float64 `json:"avg60"`
298+ // The average (in %) tasks have waited due to congestion over a 300 second window.
299+ Avg300 float64 `json:"avg300"`
255300}
256301
257302// SwapStats contains data about memory usage
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