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perf: cut redundant work out of job setup and teardown (#1218)

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Implement speedups to job start and shutdown.

- Create the job container while services are still becoming healthy, and poll their health at a flat one second instead of a 2s to 32s doubling backoff
- Pull each service image once instead of twice, and fetch a warm action cache once instead of twice
- Report the job result before reclaiming its volumes, and reap volumes stranded by a runner that died mid-job

| Step | Scenario | Before | After |
| --- | --- | --- | --- |
| Complete job | Large workspace volume | 4.2s | 0.4s |
| Set up job | One service, 2s health interval | 7.08s | 3.26s |
| Set up job | Two cached actions from github.com | 1.81s | 1.34s |
| Set up job | Two cached actions from gitea.com | 2.42s | 1.95s |
| Set up job | Two actions, cold action cache | 6.62s | unchanged |
| Set up job | Minimal job, no services or actions | 0.62s | unchanged |

Assisted-by: Claude Code:Opus 5
Reviewed-on: https://gitea.com/gitea/runner/pulls/1218
Reviewed-by: bircni <bircni@icloud.com>
Co-authored-by: silverwind <me@silverwind.io>
This commit is contained in:
silverwind
2026-09-10 19:00:06 +00:00
committed by bircni
parent 498282caaa
commit 54978255f5
11 changed files with 591 additions and 254 deletions
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internal/pkg/config/config.go
+2 -2
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@@ -63,8 +63,8 @@ type Runner struct {
FetchTimeout time.Duration `yaml:"fetch_timeout"` // FetchTimeout specifies the timeout duration for fetching resources.
FetchInterval time.Duration `yaml:"fetch_interval"` // FetchInterval specifies the interval duration for fetching resources.
FetchIntervalMax time.Duration `yaml:"fetch_interval_max"` // FetchIntervalMax specifies the maximum backoff interval when idle.
WorkdirCleanupAge time.Duration `yaml:"workdir_cleanup_age"` // WorkdirCleanupAge removes stale bind-workdir task directories and orphaned host-mode scratch dirs older than this duration during idle cleanup.
IdleCleanupInterval time.Duration `yaml:"idle_cleanup_interval"` // IdleCleanupInterval runs the idle cleanup (stale directories and orphaned docker networks) periodically while the runner is idle. Set to 0 to disable cleanup cadence.
WorkdirCleanupAge time.Duration `yaml:"workdir_cleanup_age"` // WorkdirCleanupAge removes stale bind-workdir task directories, orphaned host-mode scratch dirs and orphaned docker job resources older than this duration during idle cleanup.
IdleCleanupInterval time.Duration `yaml:"idle_cleanup_interval"` // IdleCleanupInterval runs the idle cleanup (stale directories and orphaned docker networks and volumes) periodically while the runner is idle. Set to 0 to disable cleanup cadence.
LogReportInterval time.Duration `yaml:"log_report_interval"` // LogReportInterval specifies the base interval for periodic log flush.
LogReportMaxLatency time.Duration `yaml:"log_report_max_latency"` // LogReportMaxLatency specifies the max time a log row can wait before being sent.
LogReportBatchSize int `yaml:"log_report_batch_size"` // LogReportBatchSize triggers immediate log flush when buffer reaches this size.