ckdb - allow changing CULL_TRANSFER

src/ckdb.c

@@ -624,6 +624,7 @@ K_STORE *heartbeatqueue_store;
 
 // TRANSFER
 K_LIST *transfer_free;
+int cull_transfer = CULL_TRANSFER;
 
 // SEQSET
 K_LIST *seqset_free;
@@ -2059,7 +2060,7 @@ static void alloc_storage()
 
 	transfer_free = k_new_list_cull(Transfer, sizeof(TRANSFER),
 					ALLOC_TRANSFER, LIMIT_TRANSFER, true,
-					CULL_TRANSFER);
+					cull_transfer);
 	transfer_free->dsp_func = dsp_transfer;
 
 	users_free = k_new_list("Users", sizeof(USERS),
@@ -2277,6 +2278,9 @@ static void alloc_storage()
 	userinfo_root = new_ktree(NULL, cmp_userinfo, userinfo_free);
 
 #if LOCK_CHECK
+	// Above all needed for optioncontrol_trigger()
+	DLPRIO(optioncontrol, 96);
+
 	DLPRIO(seqset, 91);
 
 	DLPRIO(transfer, 90);
@@ -2302,9 +2306,6 @@ static void alloc_storage()
 
 	DLPRIO(userinfo, 50);
 
-	// Uses event_limits
-	DLPRIO(optioncontrol, 49);
-
 	// Needs to check users and ips and uses events_limits
 	DLPRIO(events, 48);
 	DLPRIO(ovents, 47);

src/ckdb.h

@@ -58,7 +58,7 @@
 
 #define DB_VLOCK "1"
 #define DB_VERSION "1.0.7"
-#define CKDB_VERSION DB_VERSION"-2.601"
+#define CKDB_VERSION DB_VERSION"-2.602"
 
 #define WHERE_FFL " - from %s %s() line %d"
 #define WHERE_FFL_HERE __FILE__, __func__, __LINE__
@@ -1563,14 +1563,18 @@ typedef struct transfer {
 // Suggest malloc use MMAP = largest under 2MB
 #define ALLOC_TRANSFER ((int)(2*1024*1024/sizeof(TRANSFER)))
 #define LIMIT_TRANSFER 0
-/* ALLOC_TRANSFER is ~14k, but it should only ever get this big during a reload
- * so set it a bit above that */
-#define CULL_TRANSFER 32768
+// ALLOC_TRANSFER is ~14k, allocated often is 3
+#define CULL_TRANSFER (4 * ALLOC_TRANSFER)
 #define INIT_TRANSFER(_item) INIT_GENERIC(_item, transfer)
 #define DATA_TRANSFER(_var, _item) DATA_GENERIC(_var, _item, transfer, true)
 
 extern K_LIST *transfer_free;
 
+/* Allow defining and adjusting it on a running system
+ *  cull_limit is set to the optionvalue * ALLOC_TRANSFER */
+#define CULL_TRANSFER_NAME "CullTransfer"
+extern int cull_transfer;
+
 #define transfer_data(_item) _transfer_data(_item, WHERE_FFL_HERE)
 
 extern const char Transfer[];

src/ckdb_dbio.c

@@ -2786,12 +2786,33 @@ void oc_ips(OPTIONCONTROL *oc, const char *from)
 	}
 }
 
+void oc_trf(OPTIONCONTROL *oc, const char *from)
+{
+	int ct;
+
+	ct = atoi(oc->optionvalue);
+	if (ct < 0 || ct > 64) {
+		LOGERR("%s(%s) ERR set cull_transfer ignored '%s' (%d)"
+			" must be 0..64",
+			from, __func__, oc->optionvalue, ct);
+	} else {
+		K_WLOCK(transfer_free);
+		// ct isn't the value, it's the multiplier
+		cull_transfer = ct * ALLOC_TRANSFER;
+		transfer_free->cull_limit = cull_transfer;
+		K_WUNLOCK(transfer_free);
+		LOGWARNING("%s(%s) set cull_transfer to %d->%d",
+			   from, __func__, ct, cull_transfer);
+	}
+}
+
 OC_TRIGGER oc_trigger[] = {
 	{ SWITCH_STATE_NAME,	true,	oc_switch_state },
 	{ DIFF_PERCENT_NAME,	true,	oc_diff_percent },
 	{ OC_LIMITS,		false,	oc_event_limits },
 	{ OC_OLIMITS,		false,	oc_ovent_limits },
 	{ OC_IPS,		false,	oc_ips },
+	{ CULL_TRANSFER_NAME,	true,	oc_trf },
 	{ NULL, 0, NULL }
 };