diff --git a/generic-release-1.0/system-info.sh b/generic-release-1.0/system-info.sh
index 9a585ded16fae8617dc3ed3ecea2aded538239ce..49269ed25a64913340e6285e68c13ec450a4fc98 100644
--- a/generic-release-1.0/system-info.sh
+++ b/generic-release-1.0/system-info.sh
@@ -13,19 +13,28 @@
 welcome=$(uname -r)
 
 # Memory
-memory_total=$(free -m | awk '/Mem:/ { printf($2)}')
+memory_total=$(cat /proc/meminfo | awk '/^MemTotal:/ {printf($2)}')
+memory_free=$(cat /proc/meminfo | awk '/^MemFree:/ { printf($2)}')
+buffers=$(cat /proc/meminfo | awk '/^Buffers:/ { printf($2)}')
+cached=$(cat /proc/meminfo | awk '/^Cached:/ { printf($2)}')
+sreclaimable=$(cat /proc/meminfo | awk '/^SReclaimable:/ { printf($2)}')
+swap_total=$(cat /proc/meminfo | awk '/^SwapTotal:/ { printf($2)}')
+swap_free=$(cat /proc/meminfo | awk '/^SwapFree:/ { printf($2)}')
+
+
 if [ $memory_total -gt 0 ]
 then
-    memory_usage=$(free -m | awk '/Mem:/ { printf("%3.1f%%", $3/$2*100)}')
+    memory_usage=`echo "scale=1; ($memory_total - $memory_free - $buffers - $cached - $sreclaimable) * 100.0 / $memory_total" |bc`
+    memory_usage="${memory_usage}%"
 else
     memory_usage=0.0%
 fi
 
 # Swap memory
-swap_total=$(free -m | awk '/Swap:/ { printf($2)}')
 if [ $swap_total -gt 0 ]
 then
-    swap_mem=$(free -m | awk '/Swap:/ { printf("%3.1f%%", $3/$2*100)}')
+    swap_mem=`echo "scale=1; ($swap_total - $swap_free) * 100.0 / $swap_total" |bc`
+    swap_mem="${swap_mem}%"
 else
     swap_mem=0.0%
 fi
diff --git a/generic-release.spec b/generic-release.spec
index 3064cc5381a3008ca72b60e33e520b3c32a74d02..847500545ca2e0e6a77c6b15fddc6568309e9cdf 100644
--- a/generic-release.spec
+++ b/generic-release.spec
@@ -4,7 +4,7 @@
 %define variant_lowercase server
 %define dist_release_version 8
 %define generic_version 21.09
-%define generic_release 49
+%define generic_release 50
 %define builtin_release_version 1.0
 
 %define current_arch %{_arch}
@@ -27,7 +27,7 @@ Source2:	90-default.preset
 Source3:	99-default-disable.preset
 
 BuildRequires:	python3
-Requires:       %{product_family}-repos
+Requires:       %{product_family}-repos bc
 Obsoletes: 	yum-utils yum-utils-help yum-utils-plugins
 
 %description
@@ -135,6 +135,9 @@ rm -rf $RPM_BUILD_ROOT
 /etc/profile.d/performance.sh
 
 %changelog
+* Mon Nov 29 2021 yaokai <yaokai13@huawei.com> - 1.0.50
+- recover the dependency for bc
+
 * Mon Nov 22 2021 miao_kaibo <miaokaibo@outlook.com> - 1.0-49
 - delete dependency bc