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Build modules run at most as many steps as their node's build CPU gives, and say a check's phases

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Each of mesh-build-go, -node and -image declares cores-per-step (6, 2, 2) and hands it to the
SDK puller, which bounds the configured capacity by floor(slice quota cores / cores-per-step),
read live; thread limits and the status tools follow the effective capacity (issue 1806's
follow-up: three Go checks on shanks' 12-core slice starved past the 30-minute step bound).
mesh-build-go says its lint and test phases with the ask id (issue 1890).
This commit is contained in:
jschoubben
2026-10-26 19:55:31 +01:00
parent da29f77b10
commit 245143d948
21 changed files with 102 additions and 27 deletions
Download Patch File Download Diff File Expand all files Collapse all files
modules/mesh-build-image/cmd/mesh-build-image/asks.go
+5 -1
View File
@@ -40,9 +40,13 @@ func (m *Module) Puller(steps []StepTool, source buildstep.AskSource) *buildstep
// The capacity's own change wakes the puller (issue 1887): the runtime's watch of the config value as mesh-config
// resolved it; the settings file is read only when that watch cannot start. A test's Capacity is its own.
var watch func(string, func(stdio.ProvisionChange) error) error
// And the CPU bounds it (issue 1806's follow-up): the configured capacity is an upper bound, the node's build slice
// gives floor(its quota's cores / the module's cores-per-step) at once, read live; a test judges by its own Capacity.
var cores func() float64
if capacity == nil {
capacity = buildstep.NodeCapacity(m.Settings, buildstep.DefaultCapacities, m.Node, m.Say)
watch = buildstep.WatchConfigServed
cores = buildstep.NodeCoresPerStep(m.Settings, buildstep.DefaultCoresPerStep[delivery.AskImage], m.Say)
}
ask := m.askSteps(steps)
var load func(string) ([]byte, error)
@@ -50,7 +54,7 @@ func (m *Module) Puller(steps []StepTool, source buildstep.AskSource) *buildstep
load = func(key string) ([]byte, error) { return m.ReadPauses.Get(key) }
}
return &buildstep.Puller{Source: source, Language: delivery.AskImage, Node: m.Node, Put: m.Steps, PausePut: m.Pauses, Load: load,
Capacity: capacity, WatchConfig: watch, Logf: m.Say,
Capacity: capacity, WatchConfig: watch, CoresPerStep: cores, Logf: m.Say,
Run: func(ctx context.Context, a delivery.StepAsk) (any, error) {
if err := m.Check(ctx); err != nil {
return nil, err
modules/mesh-build-image/cmd/mesh-build-image/cpu.go
+7 -1
View File
@@ -15,6 +15,8 @@ import (
func (m *Module) cpuLimits() buildcpu.Limits {
slots := 1
switch {
case m.Held != nil:
slots = m.Held.CapacityNow() // the capacity the puller judges by, bounded by the node's build slice
case m.Capacity != nil:
slots = m.Capacity()
case m.Settings != "":
@@ -32,5 +34,9 @@ func (m *Module) threadEnv() []string {
// cpuStatus is what the status tool says of it: the limits a step is given, and what the kernel holds this runtime
// to (its unit and its slice), read from its cgroup rather than assumed.
func (m *Module) cpuStatus() map[string]any {
return map[string]any{"limits": m.cpuLimits(), "in-force": buildcpu.ReadInForce()}
out := map[string]any{"limits": m.cpuLimits(), "in-force": buildcpu.ReadInForce()}
if m.Held != nil {
out["capacity"] = m.Held.CapacityDetail() // the capacity judged by and why (issue 1806's follow-up)
}
return out
}