From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from shelob.surriel.com (shelob.surriel.com [96.67.55.147]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8C34EC433EF for ; Mon, 6 Dec 2021 19:40:04 +0000 (UTC) Received: from localhost ([::1] helo=shelob.surriel.com) by shelob.surriel.com with esmtp (Exim 4.94.2) (envelope-from ) id 1muJpn-0003NV-T6; Mon, 06 Dec 2021 14:39:35 -0500 Received: from sin.source.kernel.org ([145.40.73.55]) by shelob.surriel.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1muJpl-0003LR-RI for kernelnewbies@kernelnewbies.org; Mon, 06 Dec 2021 14:39:34 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sin.source.kernel.org (Postfix) with ESMTPS id 85387CE17C2; Mon, 6 Dec 2021 19:39:28 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6E3F0C341C1; Mon, 6 Dec 2021 19:39:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1638819566; bh=+JbsflOijEIO6kBM6/41bkpaisL5F4hLUYUxKKh4EP8=; h=Date:From:To:Cc:Subject:In-Reply-To:From; b=uTO9N8ZH+QGKdbvGGPiGTS0mKmjwAEEZGnWKfzWAc3pVQ2BrYD91O6wBEFW3jD/KY 2CcHEW2df+FoKVV2DSx/Vktd8PdGD42WF+MzHerhZf6tUp7Ocvmoy0e1cONl7lhDE3 I/aR6P/7ofXt0mD24YDaxFYyHXNaMQsGexlJw5TxhGNocFSuZRPBtE4bGwYrpDx9VY CldCbUr3OMUIY32CpryHMS+oFOzlyrcDZ6nsIz8P+9IyL1QFIy+435c6zV/Cs2xRJJ WhsQ2QF/vwDxNsIoGAkD/JR39T4Cj4iJEkhBqK/Xtfq4wLdgNo/mSJMz9n6F6aUmJM fdqB8/usUjRvw== Date: Mon, 6 Dec 2021 13:39:25 -0600 From: Bjorn Helgaas To: Subhashini Rao Beerisetty Subject: Re: PCI: latency Message-ID: <20211206193925.GA5439@bhelgaas> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: Cc: linux-pci@vger.kernel.org, LKML , kernelnewbies X-BeenThere: kernelnewbies@kernelnewbies.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Learn about the Linux kernel List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: kernelnewbies-bounces@kernelnewbies.org 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