test: stabilize distributed load verification

loadtest/im-pressure/model.go

@@ -35,8 +35,10 @@ type Config struct {
 	HistoryWorkers   int                 `json:"history_workers"`
 	HistoryPageSize  int                 `json:"history_page_size"`
 	HistoryInterval  string              `json:"history_query_interval"`
+	HistoryPageWait  string              `json:"history_page_wait"`
 	HistorySettle    string              `json:"history_settle"`
 	HistoryTimeout   string              `json:"history_timeout"`
+	CloseRamp        string              `json:"close_ramp"`
 	PreflightWorkers int                 `json:"preflight_workers"`
 	SkipP2PPreflight bool                `json:"skip_p2p_preflight"`
 }
@@ -84,13 +86,13 @@ func loadConfig(path string) (*Config, error) {
 		cfg.DrainGroup = "60s"
 	}
 	if cfg.HistoryWorkers <= 0 {
-		cfg.HistoryWorkers = 1
+		cfg.HistoryWorkers = 12
 	}
 	if cfg.HistoryWorkers > 128 {
 		return nil, errors.New("history_workers must not exceed 128")
 	}
 	if cfg.HistoryPageSize <= 0 {
-		cfg.HistoryPageSize = 20
+		cfg.HistoryPageSize = 10
 	}
 	if cfg.HistoryPageSize > 200 {
 		return nil, errors.New("history_page_size must not exceed 200")
@@ -101,6 +103,12 @@ func loadConfig(path string) (*Config, error) {
 	if _, err = configDuration(cfg.HistoryInterval); err != nil {
 		return nil, fmt.Errorf("history_query_interval: %w", err)
 	}
+	if cfg.HistoryPageWait == "" {
+		cfg.HistoryPageWait = "3s"
+	}
+	if _, err = configDuration(cfg.HistoryPageWait); err != nil {
+		return nil, fmt.Errorf("history_page_wait: %w", err)
+	}
 	if cfg.HistoryTimeout == "" {
 		cfg.HistoryTimeout = "3m"
 	}
@@ -113,6 +121,12 @@ func loadConfig(path string) (*Config, error) {
 	if _, err = configDuration(cfg.HistoryTimeout); err != nil {
 		return nil, fmt.Errorf("history_timeout: %w", err)
 	}
+	if cfg.CloseRamp == "" {
+		cfg.CloseRamp = "10s"
+	}
+	if _, err = configDuration(cfg.CloseRamp); err != nil {
+		return nil, fmt.Errorf("close_ramp: %w", err)
+	}
 	if cfg.PreflightWorkers <= 0 {
 		cfg.PreflightWorkers = 32
 	}