Viewing Analysis Results

Prerequisites

A network I/O diagnosis task has been created and the analysis is complete.

Procedure

1. In the System Diagnosis area on the left, click the name of the target analysis task.

   The node list is displayed.

2. Click the name of the target node to view the analysis results.

   Click the node name. The Connectivity dial test tab page is displayed by default, as shown in Figure 1. Table 1 describes the parameters.

   

   • If the connectivity test is successful, the two servers are connected in the test KPI image. When you click a server, the configuration information is displayed in the dialog box. If the connectivity test fails, the two servers are disconnected in the test KPI image, and the cause and suggestions are displayed.
   • After the connectivity test is successful, click Configuration information under the server icon. The server configuration is displayed in a dialog box.
   Figure 1 Connectivity
   

   Table 1 Parameters on the Connectivity tab page

   Parameter	Description
   Sent packets	Number of sent packets.
   Received packets	Number of received packets.
   Packets loss rate (%)	Data packet loss ratio.
   Maximum value	Maximum latency.
   Minimum value	Minimum latency.
   Average	Average latency.
   Mean deviation	Average deviation of latency.
   Route No.	Sequence number of a route.
   IP Address of the Router	IP address of the routing device.
   Response Time 1 (ms)	Route response time.
   Response Time 2 (ms)	Route response time.
   Response Time 3 (ms)	Route response time.

   Click Configuration information to view the detailed server configuration, as shown in Figure 2.

   Figure 2 Configuration information
   

   Table 2 Configuration parameters

   Parameter	Description
   Destination	Local address.
   Gateway	Gateway information.
   Genmask	Mask information.
   Flags	Network interface status.
   Network Interface	Network port information.
   Address	Network address.
   HWtype	NIC type.
   HWaddress	MAC address.

   Select TCP dial test. The TCP test page is displayed, as shown in Figure 3. Table 3 describes the parameters.

   Figure 3 TCP dialing test
   

   Table 3 TCP dialing test parameters

   Parameter	Description
   Connection information
   Connection ID	ID of the connection during the dialing test.
   Client IP	IP address of the client in the dialing test.
   Client port	Client port in the dialing test.
   Server IP	IP address of the server in the dialing test.
   Server port	Server port in the dialing test.
   Dial test statistics
   Connection ID	ID of the connection during the dialing test.
   Interval (s)	Interval at which data is sampled during a dialing test.
   Transferred data volume (MB)	Amount of data transferred within a specified interval.
   Bandwidth (Mbit/s)	Bandwidth within a specified interval.
   Retransmission	Indicates whether data is retransmitted due to a failure.
   Window size (MB)	Size of the TCP data window during a dialing test.
   Operation	Where detailed information is displayed. Users can click to view the details.

   Select UDP dial test, as shown in Figure 4. Table 4 describes the parameters.

   Figure 4 UDP dialing test
   

   Table 4 UDP dialing test parameters

   Parameter	Description
   Connection information
   Connection ID	ID of the connection during the dialing test.
   Client IP	IP address of the client in the dialing test.
   Client port	Client port in the dialing test.
   Server IP	IP address of the server in the dialing test.
   Server port	Server port in the dialing test.
   Dial test statistics
   Connection ID	ID of the connection during the dialing test.
   Interval (s)	Interval at which data is sampled during a dialing test.
   Transferred data volume (MB)	Amount of data transferred within a specified interval.
   Bandwidth (Mbit/s)	Bandwidth within a specified interval.
   Delay jitter (ms)	Latency jitter time.
   Lost data packets/Total data packets	Number of lost data packets during data transmission and the total number of data packets transferred.
   Packets loss rate (%)	Packet loss rate.
   Operation	Where detailed information is displayed. Users can click to view the details.

3. Click the Network Load tab.

   View the analysis results on the Network Load tab, as shown in Figure 5. Table 5 describes the parameters.

   

   • In the CPU Usage area, you can select CPU core or NUMA node from the drop-down list to view details.
   • You can select a NIC from the drop-down list to view the network throughput diagram.
   Figure 5 Network load monitoring
   

   Table 5 Network load monitoring parameters

   Parameter	Description
   CPU Usage
   CPU core	CPU core ID.
   NUMA NODE	NUMA node ID.
   %user	Percentage of CPU time occupied when the system is running in user mode.
   %nice	Percentage of CPU time occupied by the process that has changed the priority when the system is running in user mode.
   %system	Percentage of the CPU time occupied when the system is running in kernel mode (excluding the hardware interrupt time and software interrupt time).
   %iowait	Percentage of CPU time during which the CPU is waiting for drive I/O operations.
   %irq	Percentage of CPU time spent on service hardware interrupts.
   %soft	Percentage of CPU time spent on service software interrupts.
   %idle	Percentage of CPU time during which the CPU is idle and the system has no unfinished drive I/O request.
   CPU Load
   runq-sz	Length of the running queue, that is, the number of tasks to be run.
   plist-sz	Number of tasks in the task list.
   ldavg-1	Average system load in the last minute.
   ldavg-5	Average system load in the last 5 minutes.
   ldavg-15	Average system load in the last 15 minutes.
   blocked	Number of blocked tasks waiting for I/O operations.
   Memory Usage
   total (KB)	Total memory size of the system.
   free (KB)	Available memory size.
   used (KB)	Size of used memory.
   %used	Percentage of the used memory to the total memory.
   avail (KB)	Size of the memory that can be used by applications.
   buffers (KB)	Size of buffered memory.
   cached (KB)	Size of memory in the cache.
   Network I/O Statistics
   IFACE	Network port name.
   rx (pck/s)	Total number of packets received per second.
   tx (pck/s)	Total number of packets sent per second.
   rx (KB/s)	Total number of bytes received per second.
   tx (KB/s)	Total number of bytes sent per second.
   Receiving/Sending Side Network Data Flow Statistics
   Processing core	Sequence number of a processing core.
   data size (KB)	Size of transferred data.
   Network port name	Name of the network port.
   Queue	Current queue ID.
   Family	Currently used protocol family.
   Protocol	Currently used protocol.
   Source IP	Source IP address.
   Source port	Source port number.
   Dest IP	Destination IP address.
   Dest port	Destination port number.
   PID	Current process ID.
   Process name	Current process name.
   TID	Current thread ID.

   In the Network I/O Statistics area on the Network load monitoring tab page, click a NIC. The details page is displayed.

   Figure 6 NIC information
   

   Table 6 Parameters on the network adapter information page

   Parameter	Description
   Network configuration information
   Network Interface	NIC name.
   Status	NIC status.
   IPv4	Indicates whether IPv4 is supported.
   IPv6	Indicates whether IPv6 is supported.
   Supported Port	Supported ports.
   Speed (Mbit/s)	Network rate.
   Duplex	Working type of the NIC.
   NUMA NODE	Bound NUMA node.
   driver	Driver name.
   version	Driver version.
   firmware version	Software version.
   adaptive-rx	Setting of the dynamic aggregation for a receiving queue.
   adaptive-tx	Setting of the dynamic aggregation for a transmit queue.
   rx-usecs	Number of microseconds after at least one packet is received before an interrupt is generated.
   tx-usecs	Number of microseconds after at least one packet is sent before an interrupt is generated.
   rx-frames	Number of packets received before an interrupt is generated.
   rx-checksumming	Setting of the checksum function for received packets.
   tx-checksumming	Setting of the checksum function for transmitted packets.
   scatter-gather	Setting of the scatter/gather function.
   TSO	Setting of the TCP segmentation offload (TSO) function.
   UFO	Setting of the UDP fragmentation offload (UFO) function.
   LRO	Setting of the large receive offload (LRO) function.
   GSO	Setting of the generic segmentation offload (GSO) function.
   GRO	Setting of the generic receive offload (GRO) function.
   Tx	Size of the transmitted cache ring buffer, in bytes.
   Rx	Size of the received cache ring buffer, in bytes.
   Binding Name	Name of the bound NIC.
   Mode	Mode information.
   Destination	Local address.
   Gateway	Gateway information.
   Genmask	Mask information.
   Flags	Network interface status.
   Address	Network address.
   HWtype	NIC type.
   HWaddress	MAC address.
   Flags	Network interface status.
   Interrupt and XPS/RPS information
   Hardware Interrupt ID	ID of a hardware interrupt.
   Device Info	Device information.
   PCIe BDF Number	BDF number of a PCIe device.
   Interrupt Event Name	Name of an interrupt event.
   Interrupt Core Pinning Info	Information about the pinning of interrupts and cores.
   Interrupt Frequency (Times/s)	Interrupt frequency.
   Network Device	Name of a network device.
   xps_cpus	CPU bound to the XPS.
   rps_cpus	CPU bound to the RPS.
   rps_flow_cnt	Maximum number of flows in each queue.
   Software Interrupt Info	Software interrupt information.
   CPU Core	CPU core ID.
   Cores Bound to Hardware Interrupts	Number of CPU cores bound to hardware interrupts.
   Cores Bound to XPSs	Number of CPU cores bound to XPSs.
   Cores Bound to RPSs	Number of CPU cores bound to RPSs.
   Software and Hardware Interrupt Frequency (times/s)	Frequency of software and hardware interrupts.
   Processes that occupy the network I/O
   Local Interface	Local network port.
   Protocol	Supported network protocol type.
   Local IP	Local IP address.
   Local Port	Local port.
   Remote IP	Peer IP address.
   Remote Port	Peer port.
   PID	ID of a process.
   Command	Detailed operation information.

4. Click the Packet loss diagnosis tab.

   View the analysis results of packet loss diagnosis, as shown in Figure 7. Table 7 describes the parameters.

   

   Click Viewing Troubleshooting Suggestions to view the troubleshooting suggestions provided by the system.

   If the icon is displayed next to a parameter, you can click the icon to search for the parameter.

   Figure 7 Packet loss diagnosis
   

   Table 7 Packet loss diagnosis parameters

   Parameter	Description
   Packet loss occurred on the NIC hardware and driver
   IFACE	Network port name.
   rxerr/s	Number of damaged packets received per second.
   txerr/s	Total number of errors per second when packets are sent.
   coll/s	Number of conflicting packets per second.
   rxdrop/s	Number of data packets discarded per second after the received data packets enter the ring buffer.
   txdrop/s	Number of data packets discarded per second after the sent data packets enter the ring buffer.
   txcarr/s	Number of carrier errors sent per second.
   rxfram/s	Number of frame alignment errors per second when packets are received.
   rxfifo/s	Number of first-in, first-out (FIFO) overflow errors per second when packets are received.
   txfifo/s	Number of FIFO overflow errors per second when packets are sent.
   Packet loss occurred in the protocol stack cache queue
   Queue (CPU core)	CPU core queue.
   received/s	Protocol stack cache received per second.
   drop/s	Protocol stack cache discarded per second.
   drop rate (%)	Packet loss rate.
   Packet loss occurred in the kernel call stack
   Function Name	Name of the called function.
   Module Name	Name of the called module.
   Protocol Type	Protocol type of the data packet.
   Discarded SKBs	Number of discarded SKB packets.
   Call Stack	Call stack information.

5. Click the Network Packet Capture tab.

   View the analysis results of network packet capture, as shown in Figure 8. Table 8 describes the parameters.

   Figure 8 Packet capture
   

   Table 8 Network packet capture parameters

   Parameter	Description
   Timestamp	Time when packets are captured.
   Source MAC Address	Source MAC address.
   Destination MAC Address	Destination MAC address.
   Protocol Type	Protocol type.
   Length	Length of the captured packet.
   Source IP Address	Source IP address.
   Source Port	Source port number.
   Destination IP Address	Destination IP address.
   Destination Port	Destination port number.
   Packet Header Information	Packet header information obtained through packet capture.

6. Click the Task Information tab to view the detailed configuration and sampling information about the task on the current node.
   

   If a task fails to be executed, the failure cause will be displayed on the Task Information tab page.

   If some data fails to be collected but the overall task execution is not affected, you can view the exception message in Exception Information.

   Collection End Cause displays the reason why the data collection of the current task ends, for example, "Task collection times up" or "File size reaches the collection limit."