linux-kernel - Re: PCI: latency

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Message-ID: <YaskYBhmI6Hncaey@kroah.com>
Date:   Sat, 4 Dec 2021 09:18:40 +0100
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Subhashini Rao Beerisetty <subhashbeerisetty@...il.com>
Cc:     linux-pci@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
        kernelnewbies <kernelnewbies@...nelnewbies.org>
Subject: Re: PCI: latency

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?

How exactly are you going to define PCIe latency?

And what is this going to be used for?

thanks,

greg k-h