diff --git a/ywyw22/.keep b/ywyw22/.keep
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/ywyw22/https-shorts.md b/ywyw22/https-shorts.md
new file mode 100644
index 0000000000000000000000000000000000000000..8935f8ede151466f65db54a58b5d0fdcf0a04b16
--- /dev/null
+++ b/ywyw22/https-shorts.md
@@ -0,0 +1,14 @@
++--------------------------------------+-----------------+
+|parameter name                        |sensitivity ratio|
++--------------------------------------+-----------------+
+|net.core.rmem_default@group-1         |0.0556057        |
+|net.ipv4.tcp_keepalive_intvl@group-1  |0.044951126      |
+|net.core.rps_sock_flow_entries@group-1|0.04172707       |
+|kernel.threads-max@group-1            |0.041455347      |
+|vm.overcommit_ratio@group-1           |0.031473577      |
+|kernel.pid_max@group-1                |0.02715471       |
+|kernel.sched_rt_runtime_us@group-1    |0.016898615      |
+|net.core.wmem_max@group-1             |0.01597238       |
+|net.ipv4.tcp_keepalive_time@group-1   |0.015887033      |
+|net.ipv4.tcp_syn_retries@group-1      |0.013599727      |
++--------------------------------------+-----------------+
\ No newline at end of file