diff --git a/README.md b/README.md
index 299dd0190d..6efa0ff8ef 100644
--- a/README.md
+++ b/README.md
@@ -45,13 +45,15 @@ mkdir build && cd build
 cmake .. && cmake --build .
 ```
 
-if compiling on an ARM processor(aarch64 or aarch32), you need add one parameter:
+To compile on an ARM processor (aarch64 or aarch32), please add option CPUTYPE as below:
 
-```cmd
 aarch64:
+```cmd
 cmake .. -DCPUTYPE=aarch64 && cmake --build .
+```
 
 aarch32:
+```cmd
 cmake .. -DCPUTYPE=aarch32 && cmake --build .
 ```
 
diff --git a/src/util/src/tglobalcfg.c b/src/util/src/tglobalcfg.c
index 034d293f05..45efcad563 100644
--- a/src/util/src/tglobalcfg.c
+++ b/src/util/src/tglobalcfg.c
@@ -80,7 +80,12 @@ short tsNumOfVnodesPerCore = 8;
 short tsNumOfTotalVnodes = 0;
 short tsCheckHeaderFile = 0;
 
+#ifdef _TD_ARM_32_
+int tsSessionsPerVnode = 100;
+#else
 int tsSessionsPerVnode = 1000;
+#endif
+
 int tsCacheBlockSize = 16384;  // 256 columns
 int tsAverageCacheBlocks = TSDB_DEFAULT_AVG_BLOCKS;
 /**