diff --git a/gen-kdump-sysconfig.sh b/gen-kdump-sysconfig.sh
index eb5287bd..53115c19 100755
--- a/gen-kdump-sysconfig.sh
+++ b/gen-kdump-sysconfig.sh
@@ -100,7 +100,7 @@ ppc64le)
 	update_param KDUMP_COMMANDLINE_REMOVE \
 		"hugepages hugepagesz slub_debug quiet log_buf_len swiotlb hugetlb_cma ignition.firstboot"
 	update_param KDUMP_COMMANDLINE_APPEND \
-		"irqpoll nr_cpus=1 noirqdistrib reset_devices cgroup_disable=memory numa=off udev.children-max=2 ehea.use_mcs=0 panic=10 kvm_cma_resv_ratio=0 transparent_hugepage=never novmcoredd hugetlb_cma=0 kfence.sample_interval=0"
+		"irqpoll nr_cpus=16 noirqdistrib reset_devices cgroup_disable=memory numa=off udev.children-max=2 ehea.use_mcs=0 panic=10 kvm_cma_resv_ratio=0 transparent_hugepage=never novmcoredd hugetlb_cma=0 kfence.sample_interval=0"
 	update_param FADUMP_COMMANDLINE_APPEND \
 		"nr_cpus=16 numa=off cgroup_disable=memory cma=0 kvm_cma_resv_ratio=0 hugetlb_cma=0 transparent_hugepage=never novmcoredd udev.children-max=2"
 	;;
diff --git a/kdump-lib.sh b/kdump-lib.sh
index 232d065f..48ea222b 100755
--- a/kdump-lib.sh
+++ b/kdump-lib.sh
@@ -975,6 +975,24 @@ _crashkernel_add()
 	echo "${ret%,}"
 }
 
+
+find_nr_cpus()
+{
+	local _cmdline_append
+	local _nr_cpus
+
+	# shellcheck disable=SC2153
+	if [[  $DEFAULT_DUMP_MODE == "fadump" ]]; then
+		_cmdline_append="$FADUMP_COMMANDLINE_APPEND"
+	else
+		_cmdline_append="$KDUMP_COMMANDLINE_APPEND"
+	fi
+	_nr_cpus=$(echo "$_cmdline_append" | sed -n 's/.*nr_cpus=\([0-9]\+\).*/\1/p')
+	ddebug "Configured nr_cpus=$_nr_cpus"
+	echo "$_nr_cpus"
+}
+
+
 # get default crashkernel
 # $1 dump mode, if not specified, dump_mode will be judged by is_fadump_capable
 # $2 kernel-release, if not specified, got by _get_kdump_kernel_version
@@ -1025,6 +1043,14 @@ kdump_get_arch_recommend_crashkernel()
 			has_mlx5 && ((_delta += 150))
 		fi
 	elif [[ $_arch == "ppc64le" ]]; then
+		local _per_cpu_area
+		local _nr_cpus
+
+		# 1MB per CPU
+		_per_cpu_area=1
+		_nr_cpus=$(find_nr_cpus)
+
+		_delta=$(( _delta + _per_cpu_area * _nr_cpus ))
 		if [[ $_dump_mode == "fadump" ]]; then
 			_ck_cmdline="4G-16G:768M,16G-64G:1G,64G-128G:2G,128G-1T:4G,1T-2T:6G,2T-4T:12G,4T-8T:20G,8T-16T:36G,16T-32T:64G,32T-64T:128G,64T-:180G"
 		else