[V1] tests/TestSuite_vhost_cbdma:change cases about cbdma

  From: YangLewei <leweix.yang@intel.com>

1. change cases using imix pkts for better coverage:
   - test_perf_dynamic_queue_number_cbdma_vhost_enqueue_operations
   - test_perf_packed_dynamic_queue_number_cbdma_vhost_enqueue_operations
2. add one cbdma performance case:
   - test_perf_compare_pvp_split_ring_performance

Signed-off-by: YangLewei <leweix.yang@intel.com>
---
 tests/TestSuite_vhost_cbdma.py | 212 +++++++++++++++++++--------------
 1 file changed, 125 insertions(+), 87 deletions(-)
  

Acked-by:  Yinan Wang <yinan.wang@intel.com>

> -----Original Message-----
> From: dts <dts-bounces@dpdk.org> On Behalf Of Yang Lewei
> Sent: 2021?7?7? 2:11
> To: dts@dpdk.org
> Cc: Yang, LeweiX <leweix.yang@intel.com>
> Subject: [dts] [PATCH V1] tests/TestSuite_vhost_cbdma:change cases about
> cbdma
> 
> From: YangLewei <leweix.yang@intel.com>
> 
> 1. change cases using imix pkts for better coverage:
>    - test_perf_dynamic_queue_number_cbdma_vhost_enqueue_operations
>    -
> test_perf_packed_dynamic_queue_number_cbdma_vhost_enqueue_oper
> ations
> 2. add one cbdma performance case:
>    - test_perf_compare_pvp_split_ring_performance
> 
> Signed-off-by: YangLewei <leweix.yang@intel.com>
  

> -----Original Message-----
> From: dts <dts-bounces@dpdk.org> On Behalf Of Yang Lewei
> Sent: 2021年7月7日 2:11
> To: dts@dpdk.org
> Cc: Yang, LeweiX <leweix.yang@intel.com>
> Subject: [dts] [PATCH V1] tests/TestSuite_vhost_cbdma:change cases about
> cbdma
> 
> From: YangLewei <leweix.yang@intel.com>
> 
> 1. change cases using imix pkts for better coverage:
>    - test_perf_dynamic_queue_number_cbdma_vhost_enqueue_operations
>    -
> test_perf_packed_dynamic_queue_number_cbdma_vhost_enqueue_operations
> 2. add one cbdma performance case:
>    - test_perf_compare_pvp_split_ring_performance
> 
> Signed-off-by: YangLewei <leweix.yang@intel.com>
> ---
>  tests/TestSuite_vhost_cbdma.py | 212 +++++++++++++++++++--------------
>  1 file changed, 125 insertions(+), 87 deletions(-)
> 
> diff --git a/tests/TestSuite_vhost_cbdma.py b/tests/TestSuite_vhost_cbdma.py
> index 6bd5919b..3523c4b3 100644
> --- a/tests/TestSuite_vhost_cbdma.py
> +++ b/tests/TestSuite_vhost_cbdma.py
> @@ -183,11 +183,13 @@ class TestVirTioVhostCbdma(TestCase):
>          self.result_secondary = re.findall(r'TX-packets: (\w+)', out)
>          self.verify(int(self.result_first[0]) > 1 and int(self.result_secondary[0]) > 1,
> "forward packets no correctly")
> 
> +
>      @property
>      def check_2m_env(self):
>          out = self.dut.send_expect("cat /proc/meminfo |grep Hugepagesize|awk
> '{print($2)}'", "# ")
>          return True if out == '2048' else False
> 
> +
>      def launch_testpmd_as_vhost_user(self, command, cores="Default", dev="",
> ports = ""):
>          self.pmdout_vhost_user.start_testpmd(cores=cores, param=command,
> vdevs=[dev], ports=ports, prefix="vhost")
>          self.vhost_user.send_expect('set fwd mac', 'testpmd> ', 120) @@ -271,62
> +273,49 @@ class TestVirTioVhostCbdma(TestCase):
>          """
>          self.test_target = self.running_case
>          self.expected_throughput =
> self.get_suite_cfg()['expected_throughput'][self.test_target]
> -        used_cbdma_num = 4
> -        queue = 2
> +        used_cbdma_num = 8
> +        queue = 8
>          txd_rxd = 1024
>          dmathr = 1024
>          nb_cores = 1
>          virtio_path = "/tmp/s0"
>          path_mode = 'mrg_rxbuf=1,in_order=1'
>          self.get_cbdma_ports_info_and_bind_to_dpdk(used_cbdma_num)
> -        vhost_dmas =
> f"dmas=[txq0@{self.used_cbdma[0]};txq1@{self.used_cbdma[1]}],dmathr={dm
> athr}"
> -        eal_params = " --nb-cores=%d --txd=%d --rxd=%d --txq=%d --rxq=%d " %
> (nb_cores, txd_rxd, txd_rxd, queue, queue)
> -        dynamic_queue_number_cbdma_virtio_params = f"  --tx-offloads=0x0 --
> enable-hw-vlan-strip {eal_params}"
> +        eal_params = " --nb-cores=1 --txd=1024 --rxd=1024 --txq=%d --rxq=%d "
> +        dynamic_queue_number_cbdma_virtio_params = f"  --tx-offloads=0x0 --
> enable-hw-vlan-strip {eal_params % (queue,queue)}"
>          virtio_dev =
> f"net_virtio_user0,mac={self.virtio_mac},path={virtio_path},{path_mode},queu
> es={queue},server=1"
> -        vhost_dev =
> f"'net_vhost0,iface={virtio_path},queues={queue},client=1,%s'"
> +        vhost_dev = f"'net_vhost0,iface={virtio_path},queues=%d,client=1,%s'"
>          # launch vhost testpmd
>          allow_pci = [self.dut.ports_info[0]['pci']]
>          for index in range(used_cbdma_num):
> -            if index < used_cbdma_num / 2:
> -                allow_pci.append(self.cbdma_dev_infos[index])
> -        self.launch_testpmd_as_vhost_user(eal_params, self.cores[0:2],
> dev=vhost_dev % vhost_dmas, ports=allow_pci)
> -        #  queue 2 start virtio testpmd, check perforamnce and RX/TX
> -        mode = "dynamic_queue2"
> +            allow_pci.append(self.cbdma_dev_infos[index])
> +
> +        # no cbdma to launch vhost
> +        self.launch_testpmd_as_vhost_user(eal_params % (queue,queue),
> self.cores[0:2], dev=vhost_dev % (queue,''), ports=[allow_pci[0]])
> +        mode = "no_cbdma"
>          self.mode_list.append(mode)
> 
> self.launch_testpmd_as_virtio_user(dynamic_queue_number_cbdma_virtio_par
> ams, self.cores[2:4], dev=virtio_dev)
>          self.send_and_verify(mode, queue_list=range(queue))
> -        # On virtio-user side, dynamic change rx/tx queue numbers from 2 queue to
> 1 queues
> -        self.vhost_or_virtio_set_one_queue(self.virtio_user)
> -        self.send_and_verify("virtio_user_" + mode + "_change_to_1",
> queue_list=[0])
> -        self.mode_list.append("virtio_user_" + mode + "_change_to_1")
> -        self.virtio_user.send_expect("stop", "testpmd> ")
> -        self.virtio_user.send_expect("quit", "# ")
> +        self.vhost_user.send_expect("quit", "#")
> +
> +        # used 4 cbdma_num and 4 queue to launch vhost
> +
> +        vhost_dmas =
> f"dmas=[txq0@{self.used_cbdma[0]};txq1@{self.used_cbdma[1]};txq2@{self.us
> ed_cbdma[2]};txq3@{self.used_cbdma[3]}],dmathr={dmathr}"
> +        self.launch_testpmd_as_vhost_user(eal_params % (queue/2,queue/2),
> self.cores[0:2], dev=vhost_dev % (int(queue/2),vhost_dmas),
> ports=allow_pci[:5])
> +        self.send_and_verify("used_4_cbdma_num",
> queue_list=range(int(queue/2)))
> +        self.mode_list.append("used_4_cbdma_num")
> +        self.vhost_user.send_expect("quit", "#")
> +
> +        #used 8 cbdma_num to launch vhost
> +        vhost_dmas =
> f"dmas=[txq0@{self.used_cbdma[0]};txq1@{self.used_cbdma[1]};txq2@{self.us
> ed_cbdma[2]};txq3@{self.used_cbdma[3]};txq4@{self.used_cbdma[4]};txq5@{s
> elf.used_cbdma[5]};txq6@{self.used_cbdma[6]};txq7@{self.used_cbdma[7]}],d
> mathr={dmathr}"
> +        self.launch_testpmd_as_vhost_user(eal_params % (queue, queue),
> self.cores[0:2],
> +                                          dev=vhost_dev % (queue,vhost_dmas), ports=allow_pci)
> +        self.send_and_verify("used_8_cbdma_num", queue_list=range(queue))
> +        self.mode_list.append("used_8_cbdma_num")
> +        self.send_and_verify("used_8_cbdma_num_1", queue_list=range(queue))
> +        self.mode_list.append("used_8_cbdma_num_1")
> +        self.virtio_user.send_expect("stop", "testpmd> ", 60)
>          time.sleep(5)
> -        self.dut.send_expect(f"rm -rf {virtio_path}", "#")
> -        # queue 2 start virtio testpmd, check perforamnce and RX/TX
> -
> self.launch_testpmd_as_virtio_user(dynamic_queue_number_cbdma_virtio_par
> ams, self.cores[2:4], dev=virtio_dev)
> -        mode = "Relaunch_dynamic_queue2"
> -        self.mode_list.append(mode)
> -        self.send_and_verify(mode, queue_list=range(queue))
> -        # On vhost side, dynamic change rx queue numbers from 2 queue to 1
> queues
> -        self.vhost_or_virtio_set_one_queue(self.vhost_user)
> -        self.send_and_verify("vhost_user" + mode + "_change_to_1")
> -        self.mode_list.append("vhost_user" + mode + "_change_to_1")
> -        self.vhost_user.send_expect("quit", "# ")
> -        time.sleep(2)
> -        # Relaunch vhost with another two cbdma channels
> -        mode = "Relaunch_vhost_2_cbdma"
> -        self.mode_list.append(mode)
> -        dmathr = 512
> -        vhost_dmas =
> f"dmas=[txq0@{self.used_cbdma[2]};txq1@{self.used_cbdma[3]}],dmathr={dm
> athr}"
> -        allow_pci = [self.dut.ports_info[0]['pci']]
> -        for index in range(used_cbdma_num):
> -            if index >= used_cbdma_num / 2:
> -                allow_pci.append(self.cbdma_dev_infos[index])
> -        self.launch_testpmd_as_vhost_user(eal_params, self.cores[0:2],
> dev=vhost_dev % vhost_dmas, ports=allow_pci)
> -        self.virtio_user.send_expect("clear port stats all", "testpmd> ", 30)
> -        self.send_and_verify(mode, queue_list=range(queue))
> -        self.check_port_stats_result(self.virtio_user)
>          self.virtio_user.send_expect("quit", "# ")
>          self.vhost_user.send_expect("quit", "# ")
>          self.result_table_print()
> @@ -427,8 +416,8 @@ class TestVirTioVhostCbdma(TestCase):
>          """
>          self.test_target = self.running_case
>          self.expected_throughput =
> self.get_suite_cfg()['expected_throughput'][self.test_target]
> -        used_cbdma_num = 4
> -        queue = 2
> +        used_cbdma_num = 8
> +        queue = 8
>          txd_rxd = 1024
>          dmathr = 1024
>          nb_cores = 1
> @@ -436,53 +425,41 @@ class TestVirTioVhostCbdma(TestCase):
>          path_mode = 'mrg_rxbuf=1,in_order=1,packed_vq=1'
>          self.get_cbdma_ports_info_and_bind_to_dpdk(used_cbdma_num)
>          vhost_dmas =
> f"dmas=[txq0@{self.used_cbdma[0]};txq1@{self.used_cbdma[1]}],dmathr={dm
> athr}"
> -        eal_params = " --nb-cores=%d --txd=%d --rxd=%d --txq=%d --rxq=%d " %
> (nb_cores, txd_rxd, txd_rxd, queue, queue)
> -        dynamic_queue_number_cbdma_virtio_params = f"  --tx-offloads=0x0 --
> enable-hw-vlan-strip {eal_params}"
> +        eal_params = " --nb-cores=1 --txd=1024 --rxd=1024 --txq=%d --rxq=%d "
> +        dynamic_queue_number_cbdma_virtio_params = f"  --tx-offloads=0x0 --
> enable-hw-vlan-strip {eal_params % (queue, queue)}"
>          virtio_dev =
> f"net_virtio_user0,mac={self.virtio_mac},path={virtio_path},{path_mode},queu
> es={queue},server=1"
> -        vhost_dev =
> f"'net_vhost0,iface={virtio_path},queues={queue},client=1,%s'"
> +        vhost_dev = f"'net_vhost0,iface={virtio_path},queues=%s,client=1,%s'"
>          # launch vhost testpmd
>          allow_pci = [self.dut.ports_info[0]['pci']]
>          for index in range(used_cbdma_num):
> -            if index < used_cbdma_num / 2:
> -                allow_pci.append(self.cbdma_dev_infos[index])
> -        self.launch_testpmd_as_vhost_user(eal_params, self.cores[0:2],
> dev=vhost_dev % vhost_dmas, ports=allow_pci)
> -        #  queue 2 start virtio testpmd, check perforamnce and RX/TX
> -        mode = "dynamic_queue2"
> +            allow_pci.append(self.cbdma_dev_infos[index])
> +
> +        # no cbdma to launch vhost
> +        self.launch_testpmd_as_vhost_user(eal_params % (queue,queue),
> self.cores[0:2], dev=vhost_dev % (queue,''), ports= [allow_pci[0]])
> +        mode = "no_cbdma"
>          self.mode_list.append(mode)
> 
> self.launch_testpmd_as_virtio_user(dynamic_queue_number_cbdma_virtio_par
> ams, self.cores[2:4], dev=virtio_dev)
>          self.send_and_verify(mode, queue_list=range(queue))
> -        # On virtio-user side, dynamic change rx/tx queue numbers from 2 queue to
> 1 queues
> -        self.vhost_or_virtio_set_one_queue(self.virtio_user)
> -        self.send_and_verify("virtio_user_" + mode + "_change_to_1",
> queue_list=[0])
> -        self.mode_list.append("virtio_user_" + mode + "_change_to_1")
> -        self.virtio_user.send_expect("stop", "testpmd> ")
> -        self.virtio_user.send_expect("quit", "# ")
> +        self.vhost_user.send_expect("quit", "#")
> +
> +        # used 4 cbdma_num and 4 queue to launch vhost
> +        vhost_dmas =
> f"dmas=[txq0@{self.used_cbdma[0]};txq1@{self.used_cbdma[1]};txq2@{self.us
> ed_cbdma[2]};txq3@{self.used_cbdma[3]}],dmathr={dmathr}"
> +        self.launch_testpmd_as_vhost_user(eal_params % (queue/2,queue/2),
> self.cores[0:2],
> +                dev=vhost_dev % (int(queue/2),vhost_dmas), ports=allow_pci[:5])
> +        self.send_and_verify("used_4_cbdma_num",
> queue_list=range(int(queue/2)))
> +        self.mode_list.append("used_4_cbdma_num")
> +        self.vhost_user.send_expect("quit", "#")
> +
> +        #used 8 cbdma_num to launch vhost
> +        vhost_dmas =
> f"dmas=[txq0@{self.used_cbdma[0]};txq1@{self.used_cbdma[1]};txq2@{self.us
> ed_cbdma[2]};txq3@{self.used_cbdma[3]};txq4@{self.used_cbdma[4]};txq5@{s
> elf.used_cbdma[5]};txq6@{self.used_cbdma[6]};txq7@{self.used_cbdma[7]}],d
> mathr={dmathr}"
> +        self.launch_testpmd_as_vhost_user(eal_params % (queue, queue),
> self.cores[0:2],
> +                                          dev=vhost_dev % (queue,vhost_dmas), ports=allow_pci)
> +        self.send_and_verify("used_8_cbdma_num", queue_list=range(queue))
> +        self.mode_list.append("used_8_cbdma_num")
> +        self.send_and_verify("used_8_cbdma_num_1", queue_list=range(queue))
> +        self.mode_list.append("used_8_cbdma_num_1")
> +        self.virtio_user.send_expect("stop", "testpmd> ", 60)
>          time.sleep(5)
> -        self.dut.send_expect(f"rm -rf {virtio_path}", "#")
> -        # queue 2 start virtio testpmd, check perforamnce and RX/TX
> -
> self.launch_testpmd_as_virtio_user(dynamic_queue_number_cbdma_virtio_par
> ams, self.cores[2:4], dev=virtio_dev)
> -        mode = "Relaunch_dynamic_queue2"
> -        self.mode_list.append(mode)
> -        self.send_and_verify(mode, queue_list=range(queue))
> -        # On vhost side, dynamic change rx queue numbers from 2 queue to 1
> queues
> -        self.vhost_or_virtio_set_one_queue(self.vhost_user)
> -        self.send_and_verify("vhost_user" + mode + "_change_to_1")
> -        self.mode_list.append("vhost_user" + mode + "_change_to_1")
> -        self.vhost_user.send_expect("quit", "# ")
> -        time.sleep(2)
> -        # Relaunch vhost with another two cbdma channels
> -        mode = "Relaunch_vhost_2_cbdma"
> -        self.mode_list.append(mode)
> -        dmathr = 512
> -        vhost_dmas =
> f"dmas=[txq0@{self.used_cbdma[2]};txq1@{self.used_cbdma[3]}],dmathr={dm
> athr}"
> -        allow_pci = [self.dut.ports_info[0]['pci']]
> -        for index in range(used_cbdma_num):
> -            if index >= used_cbdma_num / 2:
> -                allow_pci.append(self.cbdma_dev_infos[index])
> -        self.launch_testpmd_as_vhost_user(eal_params, self.cores[0:2],
> dev=vhost_dev % vhost_dmas, ports=allow_pci)
> -        self.virtio_user.send_expect("clear port stats all", "testpmd> ", 30)
> -        self.send_and_verify(mode, queue_list=range(queue))
> -        self.check_port_stats_result(self.virtio_user)
>          self.virtio_user.send_expect("quit", "# ")
>          self.vhost_user.send_expect("quit", "# ")
>          self.result_table_print()
> @@ -491,6 +468,67 @@ class TestVirTioVhostCbdma(TestCase):
>          self.handle_expected(mode_list=self.mode_list)
>          self.handle_results(mode_list=self.mode_list)
> 
> +
> +
> +    def test_perf_compare_pvp_split_ring_performance(self):
> +        """
> +        Test Case6: Compare PVP split ring performance between CPU copy,
> CBDMA copy and Sync copy
> +        """
> +        used_cbdma_num = 1
> +        queue = 1
> +        txd_rxd = 1024
> +        eal_tx_rxd = ' --nb-cores=%d --txd=%d --rxd=%d'
> +        path_mode = 'mrg_rxbuf=1,in_order=1,server=1'
> +        allow_pci = [self.dut.ports_info[0]['pci']]
> +        self.get_cbdma_ports_info_and_bind_to_dpdk(used_cbdma_num)
> +        for index in range(used_cbdma_num):
> +            allow_pci.append(self.cbdma_dev_infos[index])
> +        path_mode = 'mrg_rxbuf=1,in_order=1'
> +        vhost_vdevs =
> f"'net_vhost0,iface=/tmp/s0,queues=%d,client=1,dmas=[txq0@{self.device_str}
> ],%s'"
> +        compare_pvp_split_ring_performance = "--tx-offloads=0x0 --enable-hw-
> vlan-strip --nb-cores=%d --txd=%d --rxd=%d" % (queue, txd_rxd, txd_rxd)
> +        dev_path_mode_mapper = {
> +            "sync_cbdma": ['dmathr=1024', 'dmathr=2000'],
> +            "cpu": 'dmathr=0',
> +        }
> +        for key,dma_mode in dev_path_mode_mapper.items():
> +            if key == "cpu":
> +                vhost_vdevs = f"'net_vhost0,iface=/tmp/s0,queues=1'"
> +                self.launch_testpmd_as_vhost_user(eal_tx_rxd % (queue, txd_rxd,
> txd_rxd), self.cores[0:2], dev=vhost_vdevs, ports=[allow_pci[0]])
> +                vdevs =
> f"'net_virtio_user0,mac={self.virtio_mac},path=/tmp/s0,{path_mode},queues=
> %d'" % queue
> +
> self.launch_testpmd_as_virtio_user(compare_pvp_split_ring_performance,
> self.cores[2:4], dev=vdevs)
> +                mode = "cpu_copy_64"
> +                self.mode_list.append(mode)
> +                self.send_and_verify(mode, frame_sizes=[64],
> pkt_length_mode=None)
> +                perf_cpu_copy_64 = self.throughput[mode][64][self.nb_desc]
> +                self.virtio_user.send_expect('show port stats all', 'testpmd> ', 10)
> +                self.virtio_user.send_expect("quit", "# ")
> +                self.vhost_user.send_expect("quit", "# ")
> +            else:
> +                self.launch_testpmd_as_vhost_user(eal_tx_rxd % (queue, txd_rxd,
> txd_rxd), self.cores[0:2],dev=vhost_vdevs % (queue, dma_mode[0]),
> ports=allow_pci)
> +                vdevs =
> f"'net_virtio_user0,mac={self.virtio_mac},path=/tmp/s0,{path_mode},queues=
> %d,server=1'" % queue
> +
> self.launch_testpmd_as_virtio_user(compare_pvp_split_ring_performance,
> self.cores[2:4],dev=vdevs)
> +                mode = "sync_copy_64"
> +                self.mode_list.append(mode)
> +                self.send_and_verify(mode,frame_sizes=[64],pkt_length_mode=None)
> +                perf_sync_copy_64 = self.throughput[mode][64][self.nb_desc]
> +                mode = "cbdma_copy_1518"
> +                self.mode_list.append(mode)
> +
> self.send_and_verify(mode,frame_sizes=[1518],pkt_length_mode=None)
> +                perf_cbdma_copy_1518 = self.throughput[mode][1518][self.nb_desc]
> +                self.virtio_user.send_expect('show port stats all', 'testpmd> ', 10)
> +                self.vhost_user.send_expect("quit", "# ")
> +                time.sleep(3)
> +                self.launch_testpmd_as_vhost_user(eal_tx_rxd % (queue, txd_rxd,
> txd_rxd), self.cores[0:2],dev=vhost_vdevs % (queue, dma_mode[1]),
> ports=allow_pci)
> +                mode = "sync_copy_1518"
> +                self.mode_list.append(mode)
> +
> self.send_and_verify(mode,frame_sizes=[1518],pkt_length_mode=None)
> +                perf_sync_copy_1518 = self.throughput[mode][1518][self.nb_desc]
> +                self.check_port_stats_result(self.virtio_user)
> +                self.virtio_user.send_expect("quit", "# ")
> +                self.vhost_user.send_expect("quit", "# ")
> +        self.result_table_print()
> +        self.verify(abs(perf_cbdma_copy_1518 -
> + perf_sync_copy_1518)/perf_sync_copy_1518 > 0.05 and
> + abs(perf_sync_copy_64 - perf_cpu_copy_64)/perf_sync_copy_64 < 0.1,
> + "sync_copy_64 vs. cpu_copy_64 delta > 10% or cbdma_copy_1518 vs
> + sync_copy_1518 delta < 5%"  )
> +
>      @staticmethod
>      def vhost_or_virtio_set_one_queue(session):
>          session.send_expect('stop', 'testpmd> ', 120) @@ -556,16 +594,16 @@
> class TestVirTioVhostCbdma(TestCase):
>              # check RX/TX can work normally in each queues
>              self.check_packets_of_each_queue(queue_list=queue_list)
> 
> -    def send_and_verify(self, mode, multiple_queue=True, queue_list=[]):
> +    def send_and_verify(self, mode, multiple_queue=True, queue_list=[],
> frame_sizes=[],pkt_length_mode='imix'):
>          """
> -        Send packet with packet generator and verify
> +        Send packet with packet generator and verif
>          """
> -        if self.pkt_length_mode == 'imix':
> +        if self.pkt_length_mode == pkt_length_mode:
>              self.send_imix_and_verify(mode, multiple_queue, queue_list)
>              return

According to "self.pkt_length_mode = (suite_cfg or {}).get('pkt_length_mode') or 'fixed'", we know self.pkt_length_mode Is got from suite configuration.
What's your purpose of " self.pkt_length_mode == pkt_length_mode ", is it checking pkt_length_mode Is 'imix', if that, what will happen, if set self.pkt_length_mode to "None" ?

What the usage of pkt_length_mode is in suite_cfg should be considered.

> 
>          self.throughput[mode] = dict()
> -        for frame_size in self.frame_sizes:
> +        for frame_size in frame_sizes:
>              self.throughput[mode][frame_size] = dict()
>              payload_size = frame_size - self.headers_size
>              tgenInput = []
> --
> 2.32.0