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@@ -33,6 +33,34 @@ type Spec struct {
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ZOS *ZOS `json:"zos,omitempty" platform:"zos"`
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}
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+// Scheduler represents the scheduling attributes for a process. It is based on
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+// the Linux sched_setattr(2) syscall.
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+type Scheduler struct {
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+ // Policy represents the scheduling policy (e.g., SCHED_FIFO, SCHED_RR, SCHED_OTHER).
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+ Policy LinuxSchedulerPolicy `json:"policy"`
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+
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+ // Nice is the nice value for the process, which affects its priority.
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+ Nice int32 `json:"nice,omitempty"`
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+
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+ // Priority represents the static priority of the process.
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+ Priority int32 `json:"priority,omitempty"`
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+
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+ // Flags is an array of scheduling flags.
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+ Flags []LinuxSchedulerFlag `json:"flags,omitempty"`
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+
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+ // The following ones are used by the DEADLINE scheduler.
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+
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+ // Runtime is the amount of time in nanoseconds during which the process
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+ // is allowed to run in a given period.
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+ Runtime uint64 `json:"runtime,omitempty"`
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+
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+ // Deadline is the absolute deadline for the process to complete its execution.
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+ Deadline uint64 `json:"deadline,omitempty"`
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+
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+ // Period is the length of the period in nanoseconds used for determining the process runtime.
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+ Period uint64 `json:"period,omitempty"`
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+}
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+
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// Process contains information to start a specific application inside the container.
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type Process struct {
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// Terminal creates an interactive terminal for the container.
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@@ -60,8 +88,12 @@ type Process struct {
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ApparmorProfile string `json:"apparmorProfile,omitempty" platform:"linux"`
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// Specify an oom_score_adj for the container.
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OOMScoreAdj *int `json:"oomScoreAdj,omitempty" platform:"linux"`
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+ // Scheduler specifies the scheduling attributes for a process
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+ Scheduler *Scheduler `json:"scheduler,omitempty" platform:"linux"`
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// SelinuxLabel specifies the selinux context that the container process is run as.
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SelinuxLabel string `json:"selinuxLabel,omitempty" platform:"linux"`
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+ // IOPriority contains the I/O priority settings for the cgroup.
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+ IOPriority *LinuxIOPriority `json:"ioPriority,omitempty" platform:"linux"`
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}
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// LinuxCapabilities specifies the list of allowed capabilities that are kept for a process.
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@@ -79,6 +111,22 @@ type LinuxCapabilities struct {
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Ambient []string `json:"ambient,omitempty" platform:"linux"`
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}
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+// IOPriority represents I/O priority settings for the container's processes within the process group.
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+type LinuxIOPriority struct {
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+ Class IOPriorityClass `json:"class"`
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+ Priority int `json:"priority"`
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+}
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+
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+// IOPriorityClass represents an I/O scheduling class.
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+type IOPriorityClass string
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+
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+// Possible values for IOPriorityClass.
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+const (
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+ IOPRIO_CLASS_RT IOPriorityClass = "IOPRIO_CLASS_RT"
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+ IOPRIO_CLASS_BE IOPriorityClass = "IOPRIO_CLASS_BE"
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+ IOPRIO_CLASS_IDLE IOPriorityClass = "IOPRIO_CLASS_IDLE"
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+)
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+
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// Box specifies dimensions of a rectangle. Used for specifying the size of a console.
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type Box struct {
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// Height is the vertical dimension of a box.
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@@ -789,3 +837,43 @@ type ZOSDevice struct {
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// Gid of the device.
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GID *uint32 `json:"gid,omitempty"`
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}
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+
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+// LinuxSchedulerPolicy represents different scheduling policies used with the Linux Scheduler
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+type LinuxSchedulerPolicy string
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+
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+const (
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+ // SchedOther is the default scheduling policy
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+ SchedOther LinuxSchedulerPolicy = "SCHED_OTHER"
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+ // SchedFIFO is the First-In-First-Out scheduling policy
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+ SchedFIFO LinuxSchedulerPolicy = "SCHED_FIFO"
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+ // SchedRR is the Round-Robin scheduling policy
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+ SchedRR LinuxSchedulerPolicy = "SCHED_RR"
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+ // SchedBatch is the Batch scheduling policy
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+ SchedBatch LinuxSchedulerPolicy = "SCHED_BATCH"
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+ // SchedISO is the Isolation scheduling policy
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+ SchedISO LinuxSchedulerPolicy = "SCHED_ISO"
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+ // SchedIdle is the Idle scheduling policy
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+ SchedIdle LinuxSchedulerPolicy = "SCHED_IDLE"
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+ // SchedDeadline is the Deadline scheduling policy
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+ SchedDeadline LinuxSchedulerPolicy = "SCHED_DEADLINE"
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+)
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+
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+// LinuxSchedulerFlag represents the flags used by the Linux Scheduler.
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+type LinuxSchedulerFlag string
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+
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+const (
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+ // SchedFlagResetOnFork represents the reset on fork scheduling flag
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+ SchedFlagResetOnFork LinuxSchedulerFlag = "SCHED_FLAG_RESET_ON_FORK"
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+ // SchedFlagReclaim represents the reclaim scheduling flag
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+ SchedFlagReclaim LinuxSchedulerFlag = "SCHED_FLAG_RECLAIM"
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+ // SchedFlagDLOverrun represents the deadline overrun scheduling flag
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+ SchedFlagDLOverrun LinuxSchedulerFlag = "SCHED_FLAG_DL_OVERRUN"
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+ // SchedFlagKeepPolicy represents the keep policy scheduling flag
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+ SchedFlagKeepPolicy LinuxSchedulerFlag = "SCHED_FLAG_KEEP_POLICY"
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+ // SchedFlagKeepParams represents the keep parameters scheduling flag
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+ SchedFlagKeepParams LinuxSchedulerFlag = "SCHED_FLAG_KEEP_PARAMS"
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+ // SchedFlagUtilClampMin represents the utilization clamp minimum scheduling flag
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+ SchedFlagUtilClampMin LinuxSchedulerFlag = "SCHED_FLAG_UTIL_CLAMP_MIN"
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+ // SchedFlagUtilClampMin represents the utilization clamp maximum scheduling flag
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+ SchedFlagUtilClampMax LinuxSchedulerFlag = "SCHED_FLAG_UTIL_CLAMP_MAX"
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+)
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Sebastiaan van Stijn