From de8893f25327d77f7a237e022bd1275576f4cc93 Mon Sep 17 00:00:00 2001
From: Kelvin Fichter <kelvinfichter@gmail.com>
Date: Sat, 28 May 2022 02:55:51 -0400
Subject: [PATCH] feat(l2geth): parallel dtl sync

---
 .changeset/sharp-cats-explode.md |  5 +++++
 l2geth/rollup/sync_service.go    | 26 ++++++++++++++------------
 2 files changed, 19 insertions(+), 12 deletions(-)
 create mode 100644 .changeset/sharp-cats-explode.md

diff --git a/.changeset/sharp-cats-explode.md b/.changeset/sharp-cats-explode.md
new file mode 100644
index 000000000000..1d48723a4fee
--- /dev/null
+++ b/.changeset/sharp-cats-explode.md
@@ -0,0 +1,5 @@
+---
+'@eth-optimism/l2geth': patch
+---
+
+Have l2geth sync in parallel with DTL for Verifiers
diff --git a/l2geth/rollup/sync_service.go b/l2geth/rollup/sync_service.go
index 709e11db442e..15b0540c42e9 100644
--- a/l2geth/rollup/sync_service.go
+++ b/l2geth/rollup/sync_service.go
@@ -172,19 +172,21 @@ func NewSyncService(ctx context.Context, cfg Config, txpool *core.TxPool, bc *co
 			}
 		}
 
-		// Wait until the remote service is done syncing
-		tStatus := time.NewTicker(10 * time.Second)
-		for ; true; <-tStatus.C {
-			status, err := service.client.SyncStatus(service.backend)
-			if err != nil {
-				log.Error("Cannot get sync status")
-				continue
-			}
-			if !status.Syncing {
-				tStatus.Stop()
-				break
+		if !cfg.IsVerifier {
+			// Wait until the remote service is done syncing
+			tStatus := time.NewTicker(10 * time.Second)
+			for ; true; <-tStatus.C {
+				status, err := service.client.SyncStatus(service.backend)
+				if err != nil {
+					log.Error("Cannot get sync status")
+					continue
+				}
+				if !status.Syncing {
+					tStatus.Stop()
+					break
+				}
+				log.Info("Still syncing", "index", status.CurrentTransactionIndex, "tip", status.HighestKnownTransactionIndex)
 			}
-			log.Info("Still syncing", "index", status.CurrentTransactionIndex, "tip", status.HighestKnownTransactionIndex)
 		}
 
 		// Initialize the latest L1 data here to make sure that