Documentation

pcie (PCIe Bandwidth)

The timeline information of PCIe bandwidth data is displayed at the PCIe level in the msprof_*.json file. The summary information is summarized in the pcie_*.csv file.

Availability

Atlas Training Series Product

Data at PCIe Level in msprof_*.json

The following figure shows data at the PCIe level in the msprof_*.json file.

Figure 1 PCIe layer
Table 1 Field description

Field

Description

PCIe_cpl

Completion packet that receives write requests, in MB/s. Tx stands for the transmit direction whereas Rx standards for the receive direction.

PCIe_nonpost

PCIe Non-Posted data transmission bandwidth, in MB/s. Tx stands for the transmit direction whereas Rx standards for the receive direction.

PCIe_nonpost_latency

Transmission latency in PCIe Non-Posted mode, in μs. Tx stands for the transmit direction whereas Rx standards for the receive direction. PCIe_nonpost_latency does not involve RX. The value is fixed at 0.

PCIe_post

PCIe Posted data transmission bandwidth, in MB/s. Tx stands for the transmit direction whereas Rx standards for the receive direction.

pcie_*.csv File

The file content is formatted as follows.

Figure 2 pcie_*.csv
Table 2 Field description

Field

Description

Device_id

Device ID.

Mode

Mode. The options are as follows:

  • Tx_p_avg(MB/s): PCIe Posted data transmission bandwidth at the transmit direction, in MB/s. Tx stands for the transmit direction whereas Rx standards for the receive direction.
  • Tx_np_avg(MB/s): PCIe Non-Posted data transmission bandwidth at the transmit direction, in MB/s.
  • Tx_cpl_avg(MB/s): Completion packet that receives write requests at the transmit direction, in MB/s.
  • Tx_latency_avg(us): Transmission latency in PCIe Non-Posted mode at the transmit direction, in μs.
  • Rx_p_avg(MB/s): PCIe Posted data transmission bandwidth at the receive direction, in MB/s.
  • Rx_np_avg(MB/s): PCIe Non-Posted data transmission bandwidth at the receive direction, in MB/s.
  • Rx_cpl_avg(MB/s): Completion packet that receives write requests at the receive direction, in MB/s.

Min, Max, Avg

Minimum value, maximum value, and mean value.