Item |
Definition |
Significance |
|
|---|---|---|---|
Cluster |
Avg. CPU Usage (%) |
CPU usage in a statistical period. By default, one statistical period is ten seconds. |
Indicates the service load on the CPU. |
Avg. Memory Usage (%) |
Memory usage in a statistical period. By default, one statistical period is ten seconds. |
Indicates the service load on the memory. |
|
Max. CPU Usage (%)a |
Maximum CPU usage of a statistic object in a sampling period |
Indicates the maximum CPU utilization of all nodes. |
|
Transmit Bandwidth (KB/s)ab |
Data volume sent by all cluster ports in a sampling period |
Indicates the data volume sent by a cluster in a sampling period. |
|
Receive Bandwidth (KB/s)ab |
Data volume received by all cluster ports in a sampling period |
Indicates the data volume received by a cluster in a sampling period. |
|
FTP Upload Bandwidth (KB/s) |
Average data volume of FTP upload requests processed by a module per second |
Indicates the FTP upload data volume per second. |
|
FTP Download Bandwidth (KB/s) |
Average data volume of FTP download requests processed by a module per second |
Indicates the FTP download data volume per second. |
|
Read Bandwidth (KB/s)b |
Average read request data volume processed by a module per second |
Indicates the data volume read per second. |
|
Write Bandwidth (KB/s)b |
Average write request data volume processed by a module per second |
Indicates the data volume written per second. |
|
Bandwidth (KB/s)b |
Average I/O data volume on a module per second |
Indicates the I/O data volume per second. |
|
Read IOPS (IO/s)b |
Average number of read requests processed by a module per second |
Indicates the number of read I/O requests received per second. |
|
Write IOPS (IO/s)b |
Average number of write requests processed by a module per second |
Indicates the number of write I/O requests received per second. |
|
Total IOPS (IO/s)b |
Average number of I/O requests processed by a module per second |
Indicates the number of I/O requests received per second. |
|
HDFS Concurrenciesb |
Number of HDFS concurrencies on a statistic object |
Indicates the number of HDFS concurrencies on clusters or nodes. |
|
Node |
Avg. CPU Usage (%) |
CPU usage in a statistical period. By default, one statistical period is ten seconds. |
Indicates the service load on the CPU. |
Avg. Memory Usage (%) |
Memory usage in a statistical period. By default, one statistical period is ten seconds. |
Indicates the service load on the memory. |
|
FTP Connections |
Number of connections between a statistic object and FTP clients |
Indicates the number of connections between nodes and FTP clients. |
|
FTP Upload Bandwidth (KB/s) |
Average data volume of FTP upload requests processed by a module per second |
Indicates the FTP upload data volume per second. |
|
FTP Download Bandwidth (KB/s) |
Average data volume of FTP download requests processed by a module per second |
Indicates the FTP download data volume per second. |
|
Read Bandwidth (KB/s)b |
Average read request data volume processed by a module per second |
Indicates the data volume read per second. |
|
Write Bandwidth (KB/s)b |
Average write request data volume processed by a module per second |
Indicates the data volume written per second. |
|
Bandwidth (KB/s)b |
Average I/O data volume on a module per second |
Indicates the I/O data volume per second. |
|
Read IOPS (IO/s)b |
Average number of read requests processed by a module per second |
Indicates the number of read I/O requests received per second. |
|
Write IOPS (IO/s)b |
Average number of write requests processed by a module per second |
Indicates the number of write I/O requests received per second. |
|
Total IOPS (IO/s)b |
Average number of I/O requests processed by a module per second |
Indicates the number of I/O requests received per second. |
|
HDFS Concurrenciesb |
Number of HDFS concurrencies on a statistic object |
Indicates the number of HDFS concurrencies on clusters or nodes. |
|
Heterogeneous device tiering performance |
Read Bandwidth (KB/s) |
Average data volume of data retrieval requests processed by a module per second |
Indicates the volume of data retrieved from a heterogeneous device per second. |
Write Bandwidth (KB/s) |
Average data volume of data migration requests processed by a module per second |
Indicates the volume of data migrated to a heterogeneous device per second. |
|
Bandwidth (KB/s) |
Average I/O data volume on a module per second |
Indicates the I/O data volume per second. |
|
Read IOPS (IO/s) |
Average number of data retrieval requests processed by a module per second |
Indicates the number of I/Os retrieved from a heterogeneous device per second. |
|
Write IOPS (IO/s) |
Average number of data migration requests processed by a module per second |
Indicates the number of I/Os migrated to a heterogeneous device per second. |
|
Total IOPS (IO/s) |
Average number of I/O requests processed by a module per second |
Indicates the number of I/Os per second. |
|
Remote replication pair |
Synchronization Duration (s)a |
Synchronization duration in the statistical period |
Indicates the distribution of synchronization duration (s) in asynchronous remote replication. |
Time Since Last Synchronization (s)ab |
Time interval between the current system time and the start time of last remote replication |
Indicates the time interval between the current system time and the start time of last remote replication |
|
Logical Bandwidth (KB/s)a |
Average I/O data volume on a module per second before compression |
Indicates the I/O data volume per second before compression. |
|
Time Difference (s)ab |
Time difference between the data synchronization points in time of the primary and secondary resources in a synchronization period |
Indicates the time difference between the data synchronization points in time of the primary and secondary resources in a synchronization period of asynchronous remote replication. |
|
Storage pool |
Capacity Usage (%)a |
Percentage of the used capacity of a storage pool |
Indicates the percentage of the used capacity in a storage pool. |
Disk |
Read Bandwidth (KB/s)b |
Average read request data volume processed by a module per second |
Indicates the data volume read per second. |
Write Bandwidth (KB/s)b |
Average write request data volume processed by a module per second |
Indicates the data volume written per second. |
|
Total Bandwidth (KB/s)b |
Average I/O data volume on a module per second |
Indicates the I/O data volume per second. |
|
Read IOPS (IO/s)b |
Average number of read requests processed by a module per second |
Indicates the number of read I/O requests received per second. |
|
Write IOPS (IO/s)b |
Average number of write requests processed by a module per second |
Indicates the number of write I/O requests received per second. |
|
IOPS (IO/s)b |
Average number of I/O requests processed by a module per second |
Indicates the number of I/O requests received per second. |
|
Avg. Operation Latency (ms)b |
Average latency of read and write operations on a statistic object in a sampling period |
Indicates the time required to process I/Os. |
|
Avg. Write Operation Latency (ms)b |
Average latency of write operations on a statistic object in a sampling period |
Indicates the time required to process write I/Os. |
|
Avg. Read Operation Latency (ms)b |
Average latency of read operations on a statistic object in a sampling period |
Indicates the time required to process read I/Os. |
|
Avg. Operation Latency (us) |
Average latency of read and write operations on a statistic object in a sampling period
NOTE:
Compared with Avg. Operation Latency (ms), Avg. Operation Latency (us) is more accurate and the monitored performance data is more accurate and complete. |
Indicates the time required to process I/Os. |
|
Avg. Write Operation Latency (us) |
Average latency of write operations on a statistic object in a sampling period
NOTE:
Compared with Avg. Write Operation Latency (ms), Avg. Write Operation Latency (us) is more accurate and the monitored performance data is more accurate and complete. |
Indicates the time required to process write I/Os. |
|
Avg. Read Operation Latency (us) |
Average latency of read operations on a statistic object in a sampling period
NOTE:
Compared with Avg. Read Operation Latency (ms), Avg. Read Operation Latency (us) is more accurate and the monitored performance data is more accurate and complete. |
Indicates the time required to process read I/Os. |
|
Usage (%)b |
Request processing time and queuing time/Statistical period |
Indicates the usage of the specified object. |
|
Avg. Read I/O Size (KB) |
Average read I/O size from the last sampling time point till now |
Indicates changes in the read I/O size. |
|
Avg. Write I/O Size (KB) |
Average write I/O size from the last sampling time point till now |
Indicates changes in the write I/O size. |
|
Port |
Read Bandwidth (KB/s)b |
Average read request data volume processed by a module per second |
Indicates the data volume read per second. |
Write Bandwidth (KB/s)b |
Average write request data volume processed by a module per second |
Indicates the data volume written per second. |
|
Bandwidth (KB/s)b |
Average I/O data volume on a module per second |
Indicates the I/O data volume per second. |
|
Read IOPS (IO/s) |
Average number of read requests processed by a module per second |
Indicates the number of read I/O requests received per second. |
|
Write IOPS (IO/s) |
Average number of write requests processed by a module per second |
Indicates the number of write I/O requests received per second. |
|
IOPS (IO/s) |
Average number of I/O requests processed by a module per second |
Indicates the number of I/O requests received per second. |
|
Replication link |
IOPS (IO/s)a |
Average number of I/O requests processed by a module per second |
Indicates the number of I/O requests received per second. |
Sending Bandwidth for Replication (KB/s)a |
Average data volume that is sent from the local device to a remote device per second |
Indicates the I/O data volume sent per second. |
|
Receiving Bandwidth for Replication (KB/s)a |
Average data volume that is received from a remote device to the local device per second |
Indicates the I/O data volume received per second. |
|
Avg. I/O Response Time (ns)a |
Time of processing one request by a module, including the waiting time |
Indicates the speed of I/O request processing. The longer the queue is, the longer the system takes to respond to a request. For a specified load, response time is in direct proportion to queue length. |
|
Max. I/O Response Time (ns)a |
Maximum average I/O response time in all statistical periods after the performance statistics collection starts. The average I/O response time refers to the time required to process one read or write request within a statistical period. The response time includes the waiting time. The default statistical period is five seconds. |
Indicates the maximum duration of the system responding to a read/write request. |
|
a: Indicates that the performance indicator does not support the Grafana service. b: Indicates that monitoring thresholds can be configured for the performance indicator. For details, see Managing Monitoring Thresholds. |
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