* [dts] [PATCH V1] tests/vm2vm_virtio_net_perf:sync dts code with test plan update
@ 2020-12-16 17:34 lingwei
2020-12-16 9:39 ` Ling, WeiX
2020-12-21 7:53 ` Tu, Lijuan
0 siblings, 2 replies; 3+ messages in thread
From: lingwei @ 2020-12-16 17:34 UTC (permalink / raw)
To: dts; +Cc: lingwei
sync dts code with test plan update
Signed-off-by: lingwei <weix.ling@intel.com>
---
tests/TestSuite_vm2vm_virtio_net_perf.py | 256 ++++++++++++++---------
1 file changed, 155 insertions(+), 101 deletions(-)
diff --git a/tests/TestSuite_vm2vm_virtio_net_perf.py b/tests/TestSuite_vm2vm_virtio_net_perf.py
index f1afb4fd..4260302f 100644
--- a/tests/TestSuite_vm2vm_virtio_net_perf.py
+++ b/tests/TestSuite_vm2vm_virtio_net_perf.py
@@ -49,8 +49,8 @@ from pmd_output import PmdOutput
class TestVM2VMVirtioNetPerf(TestCase):
def set_up_all(self):
- core_config = "1S/4C/1T"
- self.cores_list = self.dut.get_core_list(core_config)
+ core_config = "1S/5C/1T"
+ self.cores_list = self.dut.get_core_list(core_config, socket=0)
self.verify(len(self.cores_list) >= 4,
"There has not enough cores to test this suite %s" %
self.suite_name)
@@ -66,6 +66,13 @@ class TestVM2VMVirtioNetPerf(TestCase):
self.vhost = self.dut.new_session(suite="vhost")
self.pmd_vhost = PmdOutput(self.dut, self.vhost)
self.app_testpmd_path = self.dut.apps_name['test-pmd']
+ self.dut_ports = self.dut.get_ports()
+ self.ports_socket = self.dut.get_numa_id(self.dut_ports[0])
+ # get cbdma device
+ self.cbdma_dev_infos = []
+ self.dmas_info = None
+ self.device_str = None
+ self.dut.restore_interfaces()
def set_up(self):
"""
@@ -77,91 +84,165 @@ class TestVM2VMVirtioNetPerf(TestCase):
self.vm_dut = []
self.vm = []
- def start_vhost_testpmd(self, zerocopy=False):
+ def get_cbdma_ports_info_and_bind_to_dpdk(self, cbdma_num=2, allow_diff_socket=False):
+ """
+ get all cbdma ports
+ """
+ str_info = 'Misc (rawdev) devices using kernel driver'
+ out = self.dut.send_expect('./usertools/dpdk-devbind.py --status-dev misc', '# ', 30)
+ device_info = out.split('\n')
+ for device in device_info:
+ pci_info = re.search('\s*(0000:\d*:\d*.\d*)', device)
+ if pci_info is not None:
+ dev_info = pci_info.group(1)
+ # the numa id of ioat dev, only add the device which on same socket with nic dev
+ bus = int(dev_info[5:7], base=16)
+ if bus >= 128:
+ cur_socket = 1
+ else:
+ cur_socket = 0
+ if allow_diff_socket:
+ self.cbdma_dev_infos.append(pci_info.group(1))
+ else:
+ if self.ports_socket == cur_socket:
+ self.cbdma_dev_infos.append(pci_info.group(1))
+ self.verify(len(self.cbdma_dev_infos) >= cbdma_num, 'There no enough cbdma device to run this suite')
+ used_cbdma = self.cbdma_dev_infos[0:cbdma_num]
+ dmas_info = ''
+ for dmas in used_cbdma[0:int(cbdma_num/2)]:
+ number = used_cbdma[0:int(cbdma_num/2)].index(dmas)
+ dmas = 'txq{}@{},'.format(number, dmas.replace('0000:', ''))
+ dmas_info += dmas
+ for dmas in used_cbdma[int(cbdma_num/2):]:
+ number = used_cbdma[int(cbdma_num/2):].index(dmas)
+ dmas = 'txq{}@{},'.format(number, dmas.replace('0000:', ''))
+ dmas_info += dmas
+ self.dmas_info = dmas_info[:-1]
+ self.device_str = ' '.join(used_cbdma)
+ self.dut.setup_modules(self.target, "igb_uio","None")
+ self.dut.send_expect('./usertools/dpdk-devbind.py --force --bind=%s %s' % ("igb_uio", self.device_str), '# ', 60)
+
+ def bind_cbdma_device_to_kernel(self):
+ if self.device_str is not None:
+ self.dut.send_expect('modprobe ioatdma', '# ')
+ self.dut.send_expect('./usertools/dpdk-devbind.py -u %s' % self.device_str, '# ', 30)
+ self.dut.send_expect('./usertools/dpdk-devbind.py --force --bind=ioatdma %s' % self.device_str, '# ', 60)
+
+ def start_vhost_testpmd(self, cbdma=False, no_pci=True, client=False, queues=1, nb_cores=2):
"""
launch the testpmd with different parameters
"""
- if zerocopy is True:
- zerocopy_arg = ",dequeue-zero-copy=1"
+ if cbdma is True:
+ dmas_info_list = self.dmas_info.split(',')
+ cbdma_arg_0_list = []
+ cbdma_arg_1_list = []
+ for item in dmas_info_list:
+ if dmas_info_list.index(item) < int(len(dmas_info_list) / 2):
+ cbdma_arg_0_list.append(item)
+ else:
+ cbdma_arg_1_list.append(item)
+ cbdma_arg_0 = ",dmas=[{}],dmathr=512".format(";".join(cbdma_arg_0_list))
+ cbdma_arg_1 = ",dmas=[{}],dmathr=512".format(";".join(cbdma_arg_1_list))
else:
- zerocopy_arg = ""
+ cbdma_arg_0 = ""
+ cbdma_arg_1 = ""
testcmd = self.app_testpmd_path + " "
- vdev1 = "--vdev 'net_vhost0,iface=%s/vhost-net0,queues=1%s' " % (self.base_dir, zerocopy_arg)
- vdev2 = "--vdev 'net_vhost1,iface=%s/vhost-net1,queues=1%s' " % (self.base_dir, zerocopy_arg)
- eal_params = self.dut.create_eal_parameters(cores=self.cores_list, prefix='vhost', no_pci=True)
- para = " -- -i --nb-cores=2 --txd=1024 --rxd=1024"
+ if not client:
+ vdev1 = "--vdev 'net_vhost0,iface=%s/vhost-net0,queues=%d%s' " % (self.base_dir, queues, cbdma_arg_0)
+ vdev2 = "--vdev 'net_vhost1,iface=%s/vhost-net1,queues=%d%s' " % (self.base_dir, queues, cbdma_arg_1)
+ else:
+ vdev1 = "--vdev 'net_vhost0,iface=%s/vhost-net0,client=1,queues=%d%s' " % (self.base_dir, queues, cbdma_arg_0)
+ vdev2 = "--vdev 'net_vhost1,iface=%s/vhost-net1,client=1,queues=%d%s' " % (self.base_dir, queues, cbdma_arg_1)
+ eal_params = self.dut.create_eal_parameters(cores=self.cores_list, prefix='vhost', no_pci=no_pci)
+ if nb_cores == 4:
+ para = " -- -i --nb-cores=%d --txd=1024 --rxd=1024 --rxq=8 --txq=8" % nb_cores
+ else:
+ para = " -- -i --nb-cores=%d --txd=1024 --rxd=1024" % nb_cores
self.command_line = testcmd + eal_params + vdev1 + vdev2 + para
self.pmd_vhost.execute_cmd(self.command_line, timeout=30)
self.pmd_vhost.execute_cmd('start', timeout=30)
- def start_vms(self, mode="mergeable", packed=False):
+ def start_vms(self, path_mode, server_mode=False, opt_queue=1):
"""
start two VM, each VM has one virtio device
"""
- setting_args = "disable-modern=false,mrg_rxbuf=on,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on"
- if mode == "ufo":
- setting_args += ",guest_ufo=on,host_ufo=on"
- elif mode == "mergeable":
- setting_args = "mrg_rxbuf=on"
- elif mode == "normal":
- setting_args = "mrg_rxbuf=off"
- if packed is True:
- setting_args = "%s,packed=on" % setting_args
+ if path_mode == 1:
+ setting_args = "disable-modern=false,mrg_rxbuf=on,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on"
+ elif path_mode == 2:
+ setting_args = "disable-modern=false,mrg_rxbuf=on,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on"
+ elif path_mode == 4:
+ setting_args = "disable-modern=false,mrg_rxbuf=on,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,packed=on"
+ elif path_mode == 5:
+ setting_args = "disable-modern=false,mrg_rxbuf=on,mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on"
+ elif path_mode == 6:
+ setting_args = "disable-modern=false,mrg_rxbuf=off,mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on"
+ elif path_mode == 10:
+ setting_args = "disable-modern=false,mrg_rxbuf=on,mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on,packed=on"
+ elif path_mode == 11:
+ setting_args = "disable-modern=false,mrg_rxbuf=off,mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on,packed=on"
for i in range(self.vm_num):
vm_dut = None
vm_info = VM(self.dut, 'vm%d' % i, 'vhost_sample')
vm_params = {}
vm_params['driver'] = 'vhost-user'
- vm_params['opt_path'] = self.base_dir + '/vhost-net%d' % i
+ if not server_mode:
+ vm_params['opt_path'] = self.base_dir + '/vhost-net%d' % i
+ else:
+ vm_params['opt_path'] = self.base_dir + '/vhost-net%d' % i + ',server'
+ vm_params['opt_queue'] = opt_queue
vm_params['opt_mac'] = "52:54:00:00:00:0%d" % (i+1)
vm_params['opt_settings'] = setting_args
vm_info.set_vm_device(**vm_params)
time.sleep(3)
try:
- vm_dut = vm_info.start(set_target=False)
+ vm_dut = vm_info.start(set_target=False, migration_vm=True)
if vm_dut is None:
raise Exception("Set up VM ENV failed")
except Exception as e:
self.logger.error("Failure for %s" % str(e))
raise e
- vm_dut.restore_interfaces()
+ # vm_dut.restore_interfaces()
self.vm_dut.append(vm_dut)
self.vm.append(vm_info)
- def config_vm_env(self):
+ def config_vm_env(self, combined=False):
"""
set virtio device IP and run arp protocal
"""
vm1_intf = self.vm_dut[0].ports_info[0]['intf']
vm2_intf = self.vm_dut[1].ports_info[0]['intf']
+ if combined:
+ self.vm_dut[0].send_expect("ethtool -L %s combined 8" % vm1_intf, "#", 10)
self.vm_dut[0].send_expect("ifconfig %s %s" % (vm1_intf, self.virtio_ip1), "#", 10)
+ if combined:
+ self.vm_dut[1].send_expect("ethtool -L %s combined 8" % vm2_intf, "#", 10)
self.vm_dut[1].send_expect("ifconfig %s %s" % (vm2_intf, self.virtio_ip2), "#", 10)
self.vm_dut[0].send_expect("arp -s %s %s" % (self.virtio_ip2, self.virtio_mac2), "#", 10)
self.vm_dut[1].send_expect("arp -s %s %s" % (self.virtio_ip1, self.virtio_mac1), "#", 10)
- def prepare_test_env(self, zerocopy, path_mode, packed_mode=False):
+ def prepare_test_env(self, path_mode, cbdma=False, no_pci=True, client=False, queues=1, nb_cores=2, server_mode=False, opt_queue=1, combined=False):
"""
start vhost testpmd and qemu, and config the vm env
"""
- self.start_vhost_testpmd(zerocopy)
- self.start_vms(mode=path_mode, packed=packed_mode)
- self.config_vm_env()
+ self.start_vhost_testpmd(cbdma=cbdma, no_pci=no_pci, client=client, queues=queues, nb_cores=nb_cores)
+ self.start_vms(path_mode=path_mode, server_mode=server_mode, opt_queue=opt_queue)
+ self.config_vm_env(combined=combined)
- def start_iperf(self, mode):
+ def start_iperf(self, iperf_mode='tso'):
"""
run perf command between to vms
"""
# clear the port xstats before iperf
self.vhost.send_expect("clear port xstats all", "testpmd> ", 10)
- if mode == "ufo":
- iperf_server = "iperf -s -u -i 1"
- iperf_client = "iperf -c 1.1.1.2 -i 1 -t 30 -P 4 -u -b 1G -l 9000"
- else:
+ if iperf_mode == "tso":
iperf_server = "iperf -s -i 1"
iperf_client = "iperf -c 1.1.1.2 -i 1 -t 30"
+ else:
+ iperf_server = "iperf -s -u -i 1"
+ iperf_client = "iperf -c 1.1.1.2 -i 1 -t 30 -P 4 -u -b 1G -l 9000"
self.vm_dut[0].send_expect("%s > iperf_server.log &" % iperf_server, "", 10)
self.vm_dut[1].send_expect("%s > iperf_client.log &" % iperf_client, "", 60)
time.sleep(90)
@@ -207,12 +288,12 @@ class TestVM2VMVirtioNetPerf(TestCase):
self.verify(int(tx_info.group(1)) > 0,
"Port 0 not forward packet greater than 1522")
- def start_iperf_and_verify_vhost_xstats_info(self, mode):
+ def start_iperf_and_verify_vhost_xstats_info(self, iperf_mode='tso'):
"""
start to send packets and verify vm can received data of iperf
and verify the vhost can received big pkts in testpmd
"""
- self.start_iperf(mode)
+ self.start_iperf(iperf_mode)
self.get_perf_result()
self.verify_xstats_info_on_vhost()
self.result_table_print()
@@ -267,121 +348,94 @@ class TestVM2VMVirtioNetPerf(TestCase):
def test_vm2vm_split_ring_iperf_with_tso(self):
"""
- VM2VM split ring vhost-user/virtio-net test with tcp traffic
+ TestCase1: VM2VM split ring vhost-user/virtio-net test with tcp traffic
"""
- zerocopy = False
- path_mode = "tso"
- self.prepare_test_env(zerocopy, path_mode)
- self.start_iperf_and_verify_vhost_xstats_info(mode="tso")
+ self.prepare_test_env(path_mode=1, cbdma=False, no_pci=True)
+ self.start_iperf_and_verify_vhost_xstats_info(iperf_mode='tso')
- def test_vm2vm_split_ring_dequeue_zero_copy_with_tso(self):
+ def test_vm2vm_split_ring_with_tso_and_cbdma_enable(self):
"""
- VM2VM split ring vhost-user/virtio-net zero copy test with tcp traffic
+ TestCase2: VM2VM split ring vhost-user/virtio-net CBDMA enable test with tcp traffic
"""
- zerocopy = True
- path_mode = "tso"
- self.prepare_test_env(zerocopy, path_mode)
- self.start_iperf_and_verify_vhost_xstats_info(mode="tso")
+ self.get_cbdma_ports_info_and_bind_to_dpdk(cbdma_num=2)
+ self.prepare_test_env(path_mode=1, cbdma=True, no_pci=False)
+ self.start_iperf_and_verify_vhost_xstats_info(iperf_mode='tso')
def test_vm2vm_packed_ring_iperf_with_tso(self):
"""
- VM2VM packed ring vhost-user/virtio-net test with tcp traffic
- """
- zerocopy = False
- path_mode = "tso"
- packed_mode = True
- self.prepare_test_env(zerocopy, path_mode, packed_mode)
- self.start_iperf_and_verify_vhost_xstats_info(mode="tso")
-
- def test_vm2vm_packed_ring_dequeue_zero_copy_with_tso(self):
- """
- VM2VM packed ring vhost-user/virtio-net zero copy test with tcp traffic
+ TestCase7: VM2VM packed ring vhost-user/virtio-net test with tcp traffic
"""
- zerocopy = True
- path_mode = "tso"
- packed_mode = True
- self.prepare_test_env(zerocopy, path_mode, packed_mode)
- self.start_iperf_and_verify_vhost_xstats_info(mode="tso")
+ self.prepare_test_env(path_mode=4, cbdma=False, no_pci=True)
+ self.start_iperf_and_verify_vhost_xstats_info()
def test_vm2vm_split_ring_iperf_with_ufo(self):
"""
- VM2VM split ring vhost-user/virtio-net test with udp traffic
+ TestCase3: VM2VM split ring vhost-user/virtio-net test with udp traffic
"""
- zerocopy = False
- path_mode = "ufo"
- self.prepare_test_env(zerocopy, path_mode)
- self.start_iperf_and_verify_vhost_xstats_info(mode="ufo")
+ self.prepare_test_env(path_mode=2, cbdma=False, no_pci=True)
+ self.start_iperf_and_verify_vhost_xstats_info(iperf_mode='ufo')
def test_vm2vm_packed_ring_iperf_with_ufo(self):
"""
- VM2VM packed ring vhost-user/virtio-net test with udp traffic
+ TestCase8: VM2VM packed ring vhost-user/virtio-net test with udp traffic
"""
- zerocopy = False
- path_mode = "ufo"
- packed_mode = True
- self.prepare_test_env(zerocopy, path_mode, packed_mode)
- self.start_iperf_and_verify_vhost_xstats_info(mode="ufo")
+ self.prepare_test_env(path_mode=4, cbdma=False, no_pci=True)
+ self.start_iperf_and_verify_vhost_xstats_info(iperf_mode='other')
def test_vm2vm_split_ring_device_capbility(self):
"""
- Check split ring virtio-net device capability
+ TestCase4: Check split ring virtio-net device capability
"""
- self.start_vhost_testpmd(zerocopy=False)
- self.start_vms(mode="ufo")
+ self.start_vhost_testpmd(cbdma=False, no_pci=True)
+ self.start_vms(path_mode=2)
self.offload_capbility_check(self.vm_dut[0])
self.offload_capbility_check(self.vm_dut[1])
def test_vm2vm_packed_ring_device_capbility(self):
"""
- Check split ring virtio-net device capability
+ TestCase9: Check packed ring virtio-net device capability
"""
- self.start_vhost_testpmd(zerocopy=False)
- self.start_vms(mode="ufo", packed=True)
+ self.start_vhost_testpmd(cbdma=False, no_pci=True)
+ self.start_vms(path_mode=4)
self.offload_capbility_check(self.vm_dut[0])
self.offload_capbility_check(self.vm_dut[1])
- def test_vm2vm_split_ring_zero_copy_with_mergeable_path_check_large_packet(self):
+ def test_vm2vm_split_ring_with_mergeable_path_check_large_packet_and_cbdma_enable_8queue(self):
"""
- VM2VM virtio-net split ring mergeable zero copy test with large packet payload valid check
+ TestCase5: VM2VM virtio-net split ring mergeable CBDMA enable test with large packet payload valid check
"""
- zerocopy = True
- path_mode = 'mergeable'
- self.prepare_test_env(zerocopy, path_mode)
+ self.get_cbdma_ports_info_and_bind_to_dpdk(cbdma_num=16, allow_diff_socket=True)
+ self.prepare_test_env(path_mode=5, cbdma=True, no_pci=False, client=True, queues=8, nb_cores=4, server_mode=True, opt_queue=8, combined=True)
self.check_scp_file_valid_between_vms()
- def test_vm2vm_split_ring_zero_copy_with_no_mergeable_path_check_large_packet(self):
+ def test_vm2vm_split_ring_with_no_mergeable_path_check_large_packet_and_cbdma_enable_8queue(self):
"""
- VM2VM virtio-net split ring non-mergeable zero copy test with large packet payload valid check
+ TestCase6: VM2VM virtio-net split ring non-mergeable CBDMA enable test with large packet payload valid check
"""
- zerocopy = True
- path_mode = 'normal'
- self.prepare_test_env(zerocopy, path_mode)
+ self.get_cbdma_ports_info_and_bind_to_dpdk(cbdma_num=16, allow_diff_socket=True)
+ self.prepare_test_env(path_mode=6, cbdma=True, no_pci=False, client=True, queues=8, nb_cores=4, server_mode=True, opt_queue=8, combined=True)
self.check_scp_file_valid_between_vms()
- def test_vm2vm_packed_ring_zero_copy_with_mergeable_path_check_large_packet(self):
+ def test_vm2vm_packed_ring_mergeable_path_check_large_packet(self):
"""
- VM2VM packed ring virtio-net mergeable dequeue zero copy test with large packet payload valid check
+ TestCase10: VM2VM packed ring virtio-net mergeable with large packet payload valid check
"""
- zerocopy = True
- path_mode = 'mergeable'
- packed_mode = True
- self.prepare_test_env(zerocopy, path_mode, packed_mode)
+ self.prepare_test_env(path_mode=10, cbdma=False, no_pci=True)
self.check_scp_file_valid_between_vms()
- def test_vm2vm_packed_ring_zero_copy_with_no_mergeable_path_check_large_packet(self):
+ def test_vm2vm_packed_ring_no_mergeable_path_check_large_packet(self):
"""
- VM2VM packed ring virtio-net non-mergeable dequeue zero copy test with large packet payload valid check
+ TestCase11: VM2VM packed ring virtio-net non-mergeable with large packet payload valid check
"""
- zerocopy = True
- path_mode = 'normal'
- packed_mode = True
- self.prepare_test_env(zerocopy, path_mode, packed_mode)
+ self.prepare_test_env(path_mode=11, cbdma=False, no_pci=True)
self.check_scp_file_valid_between_vms()
def tear_down(self):
"""
run after each test case.
"""
+ if "cbdma_enable" in self.running_case:
+ self.bind_cbdma_device_to_kernel()
self.stop_all_apps()
self.dut.kill_all()
time.sleep(2)
--
2.17.1
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [dts] [PATCH V1] tests/vm2vm_virtio_net_perf:sync dts code with test plan update
2020-12-16 17:34 [dts] [PATCH V1] tests/vm2vm_virtio_net_perf:sync dts code with test plan update lingwei
@ 2020-12-16 9:39 ` Ling, WeiX
2020-12-21 7:53 ` Tu, Lijuan
1 sibling, 0 replies; 3+ messages in thread
From: Ling, WeiX @ 2020-12-16 9:39 UTC (permalink / raw)
To: Ling, WeiX, dts
[-- Attachment #1: Type: text/plain, Size: 312 bytes --]
Tested-by: Wei Ling <weix.ling@intel.com>
> -----Original Message-----
> From: lingwei <weix.ling@intel.com>
> Sent: Thursday, December 17, 2020 01:34 AM
> To: dts@dpdk.org
> Cc: Ling, WeiX <weix.ling@intel.com>
> Subject: [PATCH V1] tests/vm2vm_virtio_net_perf:sync dts code with test
> plan update
[-- Attachment #2: TestVM2VMVirtioNetPerf.log --]
[-- Type: application/octet-stream, Size: 100272 bytes --]
[-- Attachment #3: TestVM2VMVirtioNetPerfCBDMA.log --]
[-- Type: application/octet-stream, Size: 197675 bytes --]
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [dts] [PATCH V1] tests/vm2vm_virtio_net_perf:sync dts code with test plan update
2020-12-16 17:34 [dts] [PATCH V1] tests/vm2vm_virtio_net_perf:sync dts code with test plan update lingwei
2020-12-16 9:39 ` Ling, WeiX
@ 2020-12-21 7:53 ` Tu, Lijuan
1 sibling, 0 replies; 3+ messages in thread
From: Tu, Lijuan @ 2020-12-21 7:53 UTC (permalink / raw)
To: Ling, WeiX, dts; +Cc: Ling, WeiX
> sync dts code with test plan update
>
> Signed-off-by: lingwei <weix.ling@intel.com>
Applied with commit message changed
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2020-12-16 17:34 [dts] [PATCH V1] tests/vm2vm_virtio_net_perf:sync dts code with test plan update lingwei
2020-12-16 9:39 ` Ling, WeiX
2020-12-21 7:53 ` Tu, Lijuan
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