Appendix A. Performance data and statistics gathering  773 The  lsnodestats  command can also be used with a node name or ID as an argument. For  example, you can enter the command  lsnodestats node1  to display the statistics of node  with name  node1  only. Example A-4 on page 772 shows statistics for the two nodes members of cluster  ITSO-SV1 .  For each node, the following columns are displayed: The  lssystemstats  command lists the same set of statistics that is listed with the  lsnodestats  command, but representing all nodes in the cluster. The values for these  statistics are calculated from the node statistics values in the following way: Example A-5 shows the resulting output of the  lssystemstats  command.  GLYPH<SM590000> stat_name : The name of the statistic field GLYPH<SM590000> stat_current : The current value of the statistic field GLYPH<SM590000> stat_peak : The peak value of the statistic field in the last 5 minutes GLYPH<SM590000> stat_peak_time : The time that the peak occurred GLYPH<SM590000> Bandwidth: Sum of bandwidth of all nodes GLYPH<SM590000> Latency: Average latency for the cluster, which is calculated by using data from the whole  cluster, not an average of the single node values GLYPH<SM590000> IOPS: Total IOPS of all nodes GLYPH<SM590000> CPU percentage: Average CPU percentage of all nodes Example A-5 The lssystemstats command output 2 node2 drive_w_ms 0 0 181014221325 2 node2 iplink_mb 0 0 181014221325 2 node2 iplink_io 0 0 181014221325 2 node2 iplink_comp_mb 0 0 181014221325 2 node2 cloud_up_mb 0 0 181014221325 2 node2 cloud_up_ms 0 0 181014221325 2 node2 cloud_down_mb 0 0 181014221325 2 node2 cloud_down_ms 0 0 181014221325 2 node2 iser_mb 0 0 181014221325 2 node2 iser_io 0 0 181014221325 IBM_2145:ITSO-SV1:superuser>lssystemstats stat_name stat_current stat_peak stat_peak_time compression_cpu_pc 0 0 181014221539 cpu_pc 2 2 181014221539 fc_mb 0 14 181014221504 fc_io 566 690 181014221504 sas_mb 0 0 181014221539 sas_io 0 0 181014221539 iscsi_mb 0 0 181014221539 iscsi_io 0 0 181014221539 write_cache_pc 0 0 181014221539 total_cache_pc 21 21 181014221539 vdisk_mb 0 0 181014221539 vdisk_io 0 0 181014221539 vdisk_ms 0 0 181014221539 mdisk_mb 0 13 181014221504 mdisk_io 5 100 181014221504 mdisk_ms 0 2 181014221504 drive_mb 0 0 181014221539