Dec. 6, 2021
7:39 p.m.
On Fri, Dec 03, 2021 at 10:30:58PM +0530, Subhashini Rao Beerisetty wrote:
[ Please keep me in CC as I'm not subscribed to the list]
Hi all,
We are using the Linux OS on an x86_64 machine. I need to measure the PCIe latency on my system, does kernel have any latency measurement module for the PCIe bus?
No, unfortunately not. Maybe perf could help, but I don't know enough to give you any pointers. There are a couple tune/trace things like [1], but they're specific to hardware that you're probably not using. [1] https://lore.kernel.org/r/20211116090625.53702-1-yangyicong@hisilicon.com