update defaults

Signed-off-by: Tim Vaillancourt <[email protected]>

go/flags/endtoend/vtorc.txt

@@ -21,8 +21,8 @@ Flags:
       --audit-purge-duration duration                               Duration for which audit logs are held before being purged. Should be in multiples of days (default 168h0m0s)
       --audit-to-backend                                            Whether to store the audit log in the VTOrc database
       --audit-to-syslog                                             Whether to store the audit log in the syslog
-      --backend-read-concurrency int                                Maximum concurrency for reads to the backend (default 20)
-      --backend-write-concurrency int                               Maximum concurrency for writes to the backend (default 20)
+      --backend-read-concurrency int                                Maximum concurrency for reads to the backend (default 24)
+      --backend-write-concurrency int                               Maximum concurrency for writes to the backend (default 12)
       --bind-address string                                         Bind address for the server. If empty, the server will listen on all available unicast and anycast IP addresses of the local system.
       --catch-sigpipe                                               catch and ignore SIGPIPE on stdout and stderr if specified
       --change-tablets-with-errant-gtid-to-drained                  Whether VTOrc should be changing the type of tablets with errant GTIDs to DRAINED

go/vt/vtorc/config/config.go

@@ -125,7 +125,7 @@ var (
 		"backend-read-concurrency",
 		viperutil.Options[int64]{
 			FlagName: "backend-read-concurrency",
-			Default:  20,
+			Default:  24,
 			Dynamic:  true,
 		},
 	)
@@ -134,7 +134,7 @@ var (
 		"backend-write-concurrency",
 		viperutil.Options[int64]{
 			FlagName: "backend-write-concurrency",
-			Default:  20,
+			Default:  12,
 			Dynamic:  true,
 		},
 	)