diff --git a/agents/diambench_test.go b/agents/diambench_test.go
new file mode 100644
index 000000000..32178f25d
--- /dev/null
+++ b/agents/diambench_test.go
@@ -0,0 +1,196 @@
+//go:build performance
+
+/*
+Real-time Online/Offline Charging System (OCS) for Telecom & ISP environments
+Copyright (C) ITsysCOM GmbH
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>
+*/
+
+package agents
+
+import (
+	"flag"
+	"fmt"
+	"path/filepath"
+	"sync"
+	"sync/atomic"
+	"testing"
+	"time"
+
+	"github.com/cgrates/cgrates/engine"
+	"github.com/cgrates/cgrates/utils"
+	"github.com/fiorix/go-diameter/v4/diam"
+	"github.com/fiorix/go-diameter/v4/diam/avp"
+	"github.com/fiorix/go-diameter/v4/diam/datatype"
+	"github.com/fiorix/go-diameter/v4/diam/dict"
+)
+
+var (
+	capsLimit    = flag.Int("caps_limit", 0, "caps limit")
+	capsStrategy = flag.String("caps_strategy", "*busy", "caps strategy")
+	parallelism  = flag.Int("parallelism", 0, "parallelism")
+)
+
+func BenchmarkDiameterCaps(b *testing.B) {
+	b.Skip("skipping until sessions is finished")
+	var dbCfg engine.DBCfg
+	switch *utils.DBType {
+	case utils.MetaInternal:
+		dbCfg = engine.InternalDBCfg
+	case utils.MetaMySQL:
+	case utils.MetaMongo:
+		dbCfg = engine.MongoDBCfg
+	case utils.MetaPostgres:
+		dbCfg = engine.PostgresDBCfg
+	default:
+		b.Fatal("unsupported dbtype value")
+	}
+	// CoreS config is dynamic for this benchmark.
+	jsonCfg := fmt.Sprintf(`{
+"cores": {
+	"caps": %d,
+	"caps_strategy": "%s",
+	// use shutdown_timeout option to set the diameter reply timeout.
+	"shutdown_timeout": "100ms"
+}
+}`, *capsLimit, *capsStrategy)
+	ng := engine.TestEngine{
+		ConfigJSON: jsonCfg,
+		ConfigPath: filepath.Join(*utils.DataDir, "conf", "samples", "diambench"),
+		TpFiles:    map[string]string{
+			// 			utils.AccountActionsCsv: `#Tenant,Account,ActionPlanId,ActionTriggersId,AllowNegative,Disabled
+			// cgrates.org,1001,PACKAGE_1001,,,`,
+			// 			utils.ActionPlansCsv: `#Id,ActionsId,TimingId,Weight
+			// PACKAGE_1001,ACT_TOPUP,*asap,10`,
+			// 			utils.ActionsCsv: `#ActionsId[0],Action[1],ExtraParameters[2],Filter[3],BalanceId[4],BalanceType[5],Categories[6],DestinationIds[7],RatingSubject[8],SharedGroup[9],ExpiryTime[10],TimingIds[11],Units[12],BalanceWeight[13],BalanceBlocker[14],BalanceDisabled[15],Weight[16]
+			// ACT_TOPUP,*topup_reset,,,balance_sms,*sms,,,,,*unlimited,,1000000,,,,`,
+			// 			utils.ChargersCsv: `#Tenant,ID,FilterIDs,ActivationInterval,RunID,AttributeIDs,Weight
+			// cgrates.org,DEFAULT,,,*default,*none,0`,
+		},
+		DBCfg: dbCfg,
+	}
+	_, cfg := ng.Run(b)
+	time.Sleep(10 * time.Millisecond) // wait for DiameterAgent service to start
+	diamClient, err := NewDiameterClient(cfg.DiameterAgentCfg().Listen, "localhost",
+		cfg.DiameterAgentCfg().OriginRealm, cfg.DiameterAgentCfg().VendorID,
+		cfg.DiameterAgentCfg().ProductName, utils.DiameterFirmwareRevision,
+		cfg.DiameterAgentCfg().DictionariesPath, cfg.DiameterAgentCfg().ListenNet)
+	if err != nil {
+		b.Fatal(err)
+	}
+	var mu sync.Mutex // to ensure sessionID is unique
+	var sent int64
+	var answered, completed atomic.Int64
+	sendCCR := func(t testing.TB, replyTimeout time.Duration, wantResultCode string) {
+		mu.Lock()
+		sent++
+		sessionID := fmt.Sprintf("session%d", sent)
+		mu.Unlock()
+		ccr := diam.NewRequest(diam.CreditControl, 4, nil)
+		ccr.NewAVP(avp.SessionID, avp.Mbit, 0, datatype.UTF8String(sessionID))
+		ccr.NewAVP(avp.OriginHost, avp.Mbit, 0, datatype.DiameterIdentity("CGR-DA"))
+		ccr.NewAVP(avp.OriginRealm, avp.Mbit, 0, datatype.DiameterIdentity("cgrates.org"))
+		ccr.NewAVP(avp.AuthApplicationID, avp.Mbit, 0, datatype.Unsigned32(4))
+		ccr.NewAVP(avp.ServiceContextID, avp.Mbit, 0, datatype.UTF8String("message@DiamItCCRSMS"))
+		ccr.NewAVP(avp.CCRequestType, avp.Mbit, 0, datatype.Enumerated(4))
+		ccr.NewAVP(avp.CCRequestNumber, avp.Mbit, 0, datatype.Unsigned32(0))
+		ccr.NewAVP(avp.EventTimestamp, avp.Mbit, 0, datatype.Time(time.Date(2018, 10, 5, 11, 43, 10, 0, time.UTC)))
+		ccr.NewAVP(avp.SubscriptionID, avp.Mbit, 0, &diam.GroupedAVP{
+			AVP: []*diam.AVP{
+				diam.NewAVP(avp.SubscriptionIDType, avp.Mbit, 0, datatype.Enumerated(0)),
+				diam.NewAVP(avp.SubscriptionIDData, avp.Mbit, 0, datatype.UTF8String("1001")), // Subscription-Id-Data
+			}})
+		ccr.NewAVP(avp.SubscriptionID, avp.Mbit, 0, &diam.GroupedAVP{
+			AVP: []*diam.AVP{
+				diam.NewAVP(avp.SubscriptionIDType, avp.Mbit, 0, datatype.Enumerated(1)),
+				diam.NewAVP(avp.SubscriptionIDData, avp.Mbit, 0, datatype.UTF8String("104502200011")), // Subscription-Id-Data
+			}})
+		ccr.NewAVP(avp.ServiceIdentifier, avp.Mbit, 0, datatype.Unsigned32(0))
+		ccr.NewAVP(avp.RequestedAction, avp.Mbit, 0, datatype.Enumerated(0))
+		ccr.NewAVP(avp.RequestedServiceUnit, avp.Mbit, 0, &diam.GroupedAVP{
+			AVP: []*diam.AVP{
+				diam.NewAVP(avp.CCTime, avp.Mbit, 0, datatype.Unsigned32(1))}})
+		ccr.NewAVP(873, avp.Mbit, 10415, &diam.GroupedAVP{ //
+			AVP: []*diam.AVP{
+				diam.NewAVP(20300, avp.Mbit, 2011, &diam.GroupedAVP{ // IN-Information
+					AVP: []*diam.AVP{
+						diam.NewAVP(20302, avp.Mbit, 2011, datatype.UTF8String("22509")), // Calling-Vlr-Number
+						diam.NewAVP(20385, avp.Mbit, 2011, datatype.UTF8String("4002")),  // Called-Party-NP
+					},
+				}),
+				diam.NewAVP(2000, avp.Mbit, 10415, &diam.GroupedAVP{ // SMS-Information
+					AVP: []*diam.AVP{
+						diam.NewAVP(886, avp.Mbit, 10415, &diam.GroupedAVP{ // Originator-Address
+							AVP: []*diam.AVP{
+								diam.NewAVP(899, avp.Mbit, 10415, datatype.Enumerated(1)),      // Address-Type
+								diam.NewAVP(897, avp.Mbit, 10415, datatype.UTF8String("1001")), // Address-Data
+							}}),
+						diam.NewAVP(1201, avp.Mbit, 10415, &diam.GroupedAVP{ // Recipient-Address
+							AVP: []*diam.AVP{
+								diam.NewAVP(899, avp.Mbit, 10415, datatype.Enumerated(1)),      // Address-Type
+								diam.NewAVP(897, avp.Mbit, 10415, datatype.UTF8String("1003")), // Address-Data
+							}}),
+					},
+				}),
+			}})
+		if err := diamClient.SendMessage(ccr); err != nil {
+			t.Errorf("failed to send diameter message: %v", err)
+			return
+		}
+		reply := diamClient.ReceivedMessage(replyTimeout)
+		if reply == nil {
+			t.Error("received empty reply")
+			return
+		}
+		answered.Add(1)
+		avps, err := reply.FindAVPsWithPath([]any{"Result-Code"}, dict.UndefinedVendorID)
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		if len(avps) == 0 {
+			t.Error("missing AVPs in reply")
+			return
+		}
+		resultCode, err := diamAVPAsString(avps[0])
+		if err != nil {
+			t.Error(err)
+			return
+		}
+		if resultCode != wantResultCode {
+			t.Errorf("Result-Code=%s, want %s", resultCode, wantResultCode)
+			return
+		}
+		completed.Add(1)
+	}
+	// actual benchmark
+	b.SetParallelism(*parallelism)
+	b.ResetTimer()
+	b.RunParallel(func(pb *testing.PB) {
+		for pb.Next() {
+			sendCCR(b, cfg.CoreSCfg().ShutdownTimeout, "2001")
+		}
+	})
+	// check results
+	b.Logf("sent %d, answered %d, completed %d", sent, answered.Load(), completed.Load())
+	// var acnt *engine.Account
+	// attrsAcnt := &utils.AttrGetAccount{
+	// 	Tenant:  "cgrates.org",
+	// 	Account: "1001",
+	// }
+	// expBalance := float64(1000000 - completed.Load())
+	// if err = client.Call(context.Background(), utils.APIerSv2GetAccount, attrsAcnt, &acnt); err != nil {
+	// 	b.Errorf("APIerSv1.GetAccount unexpected err: %v", err)
+	// } else if rply := acnt.BalanceMap[utils.MetaSMS].GetTotalValue(); rply != expBalance {
+	// 	b.Errorf("APIerSv1.GetAccount: sms_balance: %f, want: %f", rply, expBalance)
+	// }
+}
diff --git a/data/conf/samples/diambench/cgrates.json b/data/conf/samples/diambench/cgrates.json
new file mode 100644
index 000000000..5a31f0e0d
--- /dev/null
+++ b/data/conf/samples/diambench/cgrates.json
@@ -0,0 +1,130 @@
+{
+"general": {
+	"log_level": 7
+},
+"schedulers": {
+	"enabled": true,
+	"cdrs_conns": ["*internal"]
+},
+"apiers": {
+	"enabled": true,
+	"scheduler_conns": ["*internal"]
+},
+"filters": {
+	"apiers_conns": ["*internal"]
+},
+"attributes": {
+	"enabled": true,
+	"opts": {
+		"*processRuns": 2
+	}
+},
+"sessions": {
+	"enabled": true,
+	"attributes_conns": ["*internal"],
+	"chargers_conns": ["*internal"],
+	"rals_conns": ["*internal"],
+	"cdrs_conns": ["*internal"]
+},
+"chargers": {
+	"enabled": true
+},
+"rals": {
+	"enabled": true
+},
+"cdrs": {
+	"enabled": true,
+	"attributes_conns": ["*internal"],
+	"chargers_conns": ["*internal"],
+	"rals_conns": ["*internal"]
+},
+"diameter_agent": {
+	"enabled": true,
+	"listen": "0.0.0.0:3868",
+	"sessions_conns": ["*birpc_internal"],
+	"request_processors": [{
+		"id": "message",
+		"filters": [
+			"*string:~*vars.*cmd:CCR",
+			"*prefix:~*req.Service-Context-Id:message",
+			"*string:~*req.CC-Request-Type:4"
+		],
+		"flags": ["*message", "*accounts", "*cdrs", "*attributes"],
+		"request_fields": [{
+				"tag": "ToR",
+				"path": "*cgreq.ToR",
+				"type": "*constant",
+				"value": "*sms"
+			},
+			{
+				"tag": "OriginID",
+				"path": "*cgreq.OriginID",
+				"type": "*variable",
+				"value": "~*req.Session-Id",
+				"mandatory": true
+			},
+			{
+				"tag": "Category",
+				"path": "*cgreq.Category",
+				"type": "*constant",
+				"value": "sms"
+			},
+			{
+				"tag": "RequestType",
+				"path": "*cgreq.RequestType",
+				"type": "*constant",
+				"value": "*prepaid"
+			},
+			{
+				"tag": "Account",
+				"path": "*cgreq.Account",
+				"type": "*variable",
+				"mandatory": true,
+				"value": "~*req.Subscription-Id.Subscription-Id-Data[~Subscription-Id-Type(0)]"
+			},
+			{
+				"tag": "Destination",
+				"path": "*cgreq.Destination",
+				"type": "*variable",
+				"mandatory": true,
+				"value": "~*req.Service-Information.SMS-Information.Recipient-Address.Address-Data"
+			},
+			{
+				"tag": "SetupTime",
+				"path": "*cgreq.SetupTime",
+				"type": "*variable",
+				"value": "~*req.Event-Timestamp",
+				"mandatory": true
+			},
+			{
+				"tag": "AnswerTime",
+				"path": "*cgreq.AnswerTime",
+				"type": "*variable",
+				"value": "~*req.Event-Timestamp",
+				"mandatory": true
+			},
+			{
+				"tag": "Usage",
+				"path": "*cgreq.Usage",
+				"type": "*variable",
+				"value": "~*req.Requested-Service-Unit.CC-Time",
+				"mandatory": true
+			}
+		],
+		"reply_fields": [{
+				"tag": "CCATemplate",
+				"type": "*template",
+				"value": "*cca"
+			},
+			{
+				"tag": "ResultCode",
+				"path": "*rep.Result-Code",
+				"filters": ["*notempty:~*cgrep.Error:"],
+				"type": "*constant",
+				"value": "5030",
+				"blocker": true
+			}
+		]
+	}]
+}
+}