From: Bjorn Helgaas <helgaas@kernel.org>
To: Subhashini Rao Beerisetty <subhashbeerisetty@gmail.com>
Cc: linux-pci@vger.kernel.org, LKML <linux-kernel@vger.kernel.org>,
kernelnewbies <kernelnewbies@kernelnewbies.org>
Subject: Re: PCI: latency
Date: Mon, 6 Dec 2021 13:39:25 -0600 [thread overview]
Message-ID: <20211206193925.GA5439@bhelgaas> (raw)
In-Reply-To: <CAPY=qRQJ-YbRi0AStrytsE3ke4vFN9K4Cos2T+b1JKDPJGUVOg@mail.gmail.com>
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
_______________________________________________
Kernelnewbies mailing list
Kernelnewbies@kernelnewbies.org
https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
prev parent reply other threads:[~2021-12-06 19:40 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-03 17:00 PCI: latency Subhashini Rao Beerisetty
2021-12-04 8:18 ` Greg KH
2021-12-04 14:34 ` latency David Laight
2021-12-06 19:39 ` Bjorn Helgaas [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20211206193925.GA5439@bhelgaas \
--to=helgaas@kernel.org \
--cc=kernelnewbies@kernelnewbies.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pci@vger.kernel.org \
--cc=subhashbeerisetty@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox