PCIE link check tool Flashcards
The PCIe link check tool does not provide output for what model?
XE9640 with intel GPUs
The PCIe link tool only pulls from serves that use?
PCIe switches (PSB)
What is the PCIE link tool?
a script that service engineers can run to help isolate performance degradation issues on XE servers
What OS can the PCIe link tool script run and and what can’t it run on?
It can run on Linux host operating systems
It is not supported on Windows
In the output, When a PSB is downgraded, what does this mean?
Unseated cables, connector damage and cable plug damage
General steps to run the PCIe Link Check Tool
- download script
- modify permissions. chmod +x PsbCheck.sh
- Verify script is executable. ls -al
- Run the script and direct output to a text file have servicetag in the naming convention. sudo ./PsbCheck.sh»_space; servicetag_psb_output.txt
What does the upstream device typically denote
The system board or CPU
What does the downstream device typically denote
The endpoints. Drives, PCIe cards and GPUs.
What is the connection between the upstream device and the enpoint?
The PCIe Switch
How are ports denoted?
By their direction
A port on a switch whose cable connects to the system board is an?
upstream or root port
the PSB-1 port whose cable connects to a GPU is a?
downstream port
Downgraded state doesnt always indicate an error it can sometimes indicate
a PCIE device does not support PCIe Gen5 x16
When should you run the PCIe link check tool?
for performance related issues
What does the tool output show?
If the upstream or downstream devices are in a downgraded state
What does identifying downgraded entries enable the service engineer to do?
narrow the area that may be the cause of issue.
Based on the flow chart, what two times is it good to run the PCIe link check tool?
PCIe fatal error in TSR and we can power on and boot into OS
We see a Performance drop
For a GPU issue running the PCIe link check tool can identify?
The faulty GPU, the data path, and the affected ports
With Slimline cables ensure the route from the PSB to the system board are
not loose or have bent pins
