Thank you for your reply. I did use a VMware virtual machine before, I switched to a physical NIC for testing and now there is no problem setting rx-num to 5. Also, I tested redis using redis-benchmark, the specific command is as follows: sudo taskset -c 9 bash -c "VCL_CONFIG=/home/chenweihao/vpp_config/vcl.conf LD_PRELOAD=/home/chenweihao/vpp_dev/build-root/install-vpp-native/vpp/lib/libvcl_ldpreload.so /home/chenweihao/redis_6.0/src/redis-server --protected-mode no" sudo taskset -c 11 bash -c "VCL_CONFIG=/home/chenweihao/vpp_config/vcl.conf LD_PRELOAD=/home/chenweihao/vpp_dev/build-root/install-vpp-native/vpp/lib/libvcl_ldpreload.so /home/chenweihao/redis_6.0/src/redis-benchmark -h 127.0.0.1 -n 10000 -q -t set,get -d 4096"
In the case of running both commands, the problems I mentioned before still occur (even though I applied the patch https://gerrit.fd.io/r/c/vpp/+/38529 ). However, the problem is not triggered every time the test is run, and it may take several runs before the problem occurs once.
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