diff --git a/include/sigar_util.h b/include/sigar_util.h
index 2698bdf0..b81196c2 100644
--- a/include/sigar_util.h
+++ b/include/sigar_util.h
@@ -139,6 +139,11 @@ sigar_iodev_t *sigar_iodev_get(sigar_t *sigar,
 
 int sigar_cpu_core_count(sigar_t *sigar);
 
+/* e.g. VM guest may have 1 virtual ncpu on multicore hosts */
+#define sigar_cpu_socket_count(sigar) \
+    (sigar->ncpu < sigar->lcpu) ? sigar->ncpu : \
+    (sigar->ncpu / sigar->lcpu)
+
 int sigar_cpu_core_rollup(sigar_t *sigar);
 
 void sigar_cpu_model_adjust(sigar_t *sigar, sigar_cpu_info_t *info);
diff --git a/src/os/darwin/darwin_sigar.c b/src/os/darwin/darwin_sigar.c
index fadceead..e06c8799 100644
--- a/src/os/darwin/darwin_sigar.c
+++ b/src/os/darwin/darwin_sigar.c
@@ -2133,7 +2133,7 @@ int sigar_cpu_info_list_get(sigar_t *sigar,
         info->mhz = mhz;
         info->cache_size = cache_size;
         info->total_cores = sigar->ncpu;
-        info->total_sockets = sigar->ncpu / lcpu;
+        info->total_sockets = sigar_cpu_socket_count(sigar);
     }
 
     return SIGAR_OK;
diff --git a/src/os/linux/linux_sigar.c b/src/os/linux/linux_sigar.c
index 355701bc..cf778f4c 100644
--- a/src/os/linux/linux_sigar.c
+++ b/src/os/linux/linux_sigar.c
@@ -212,7 +212,8 @@ char *sigar_os_error_string(sigar_t *sigar, int err)
 
 static int sigar_cpu_total_count(sigar_t *sigar)
 {
-    return (int)sysconf(_SC_NPROCESSORS_CONF);
+    sigar->ncpu = (int)sysconf(_SC_NPROCESSORS_CONF);
+    return sigar->ncpu;
 }
 
 static int get_ram(sigar_t *sigar, sigar_mem_t *mem)
@@ -1569,12 +1570,12 @@ int sigar_cpu_info_list_get(sigar_t *sigar,
 {
     FILE *fp;
     int core_rollup = sigar_cpu_core_rollup(sigar), i=0;
-    int ncpu = sigar_cpu_total_count(sigar);
 
     if (!(fp = fopen(PROC_FS_ROOT "cpuinfo", "r"))) {
         return errno;
     }
 
+    (void)sigar_cpu_total_count(sigar);
     sigar_cpu_info_list_create(cpu_infos);
 
     while (get_cpu_info(sigar, &cpu_infos->data[cpu_infos->number], fp)) {
@@ -1588,8 +1589,8 @@ int sigar_cpu_info_list_get(sigar_t *sigar,
 
         cpu_info = &cpu_infos->data[cpu_infos->number];
         get_cpuinfo_max_freq(cpu_info, cpu_infos->number);
-        cpu_info->total_sockets = ncpu / sigar->lcpu;
-        cpu_info->total_cores   = ncpu;
+        cpu_info->total_sockets = sigar_cpu_socket_count(sigar);
+        cpu_info->total_cores   = sigar->ncpu;
 
         ++cpu_infos->number;
     }
diff --git a/src/os/win32/win32_sigar.c b/src/os/win32/win32_sigar.c
index c12fd7e0..151e51aa 100644
--- a/src/os/win32/win32_sigar.c
+++ b/src/os/win32/win32_sigar.c
@@ -2005,7 +2005,7 @@ static int sigar_cpu_info_get(sigar_t *sigar, sigar_cpu_info_t *info)
     RegCloseKey(key);
     RegCloseKey(cpu);
 
-    info->total_sockets = sigar->ncpu / sigar->lcpu;
+    info->total_sockets = sigar_cpu_socket_count(sigar);
     info->total_cores   = sigar->ncpu;
 
     return SIGAR_OK;