From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 81D5F459D7 for ; Fri, 20 Sep 2024 16:37:00 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 765A243440; Fri, 20 Sep 2024 16:37:00 +0200 (CEST) Received: from mail-pl1-f176.google.com (mail-pl1-f176.google.com [209.85.214.176]) by mails.dpdk.org (Postfix) with ESMTP id D813B4343F for ; Fri, 20 Sep 2024 16:36:59 +0200 (CEST) Received: by mail-pl1-f176.google.com with SMTP id d9443c01a7336-20543fdb7acso18505105ad.1 for ; Fri, 20 Sep 2024 07:36:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=networkplumber-org.20230601.gappssmtp.com; s=20230601; t=1726843019; x=1727447819; darn=dpdk.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:subject:cc:to:from:date:from:to:cc:subject:date :message-id:reply-to; bh=1TWmC+VWqpeIsqhVc57oS/SSXxuyx7djcBTVlwO3H3U=; b=PI5Z/Kc5xK2iix8D8w5jHUoves7sG/5wrW08YabIlCqs3SPDEfZnYm/IIj4RTx4jKw PrG0LRY9eAzOfyAWeXRgPZqe7tdZ6+8BuTz8vQTJ0xWwXyRm4oiMUV1vZOw+XTMYoegu gKAHqhIo1cc6lTBra1RLyVvybsGscYqBTLWu/+0qx4AHALO2EuE2LlnX9dPdCIfI6BKn NKXKcUPGT1U+TE7VmoIfjAY3ck9OfA6laGqqMnkploSGyppp2FutaZTD91Ntr6Jh01uW aMTbargrij1kMvutUcOUegObGvj0o6CGMZ8lnMyB2dxV0BS55HRQXQLalUEYMwjfPneQ i4rw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1726843019; x=1727447819; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:subject:cc:to:from:date:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=1TWmC+VWqpeIsqhVc57oS/SSXxuyx7djcBTVlwO3H3U=; b=vW1wElg5UeVGZu7KV+KhNOzoD5UH0j4+XeKKtNHseMsTNRhjAgpD9KPyIrTpTXJhmy 2KiQ3mBkZi+zf07UGbikqO/vP2wMvhsh7xF6mv09CxSJjoyIpRAVWtTeBKh+cwR1X1iz KAL///9mjfiFctuRKaHAaJuA8ZgUpwhTxfkSObUwKNpBA2Sd7+C4qqkLXw3muCveEGlk ffJNYzUnGbxqBSF3utWdQEXb5RPkvoK4H8hVo5AGbkSmQdxQF5s4SAgXe3N+AOUO/KjP JXVx89eu4954rC+3hc/KhI0R5Ikr8daui09YMzmndYhma8Lr1McGjFPbJiDPmI49XJUJ F9NQ== X-Forwarded-Encrypted: i=1; AJvYcCVD6qYG1vYxktHOjV5kzyLKhh3idIobZcBLNpEnVqzhmMpytf/4PPZFnkuNiTKrlSlnKMhWNA==@dpdk.org X-Gm-Message-State: AOJu0YwqhMZzU4bn2hZdhaBUUi/55zkB+3IFQ8Rd0fBpfQDYLLs+o78E 0d8owOeCKVwb0BocbxCBgh8ng9YR2q11H8fRrLycQG9oOCziylpf1QeI9qDTenl8j5wIqUjwnk8 G X-Google-Smtp-Source: AGHT+IHEYbqAFBZ7/h2/I6cjwpzQrJ6fLtCqLPzKqQPnfGhjBx/WdoTJeG7edkolW50cgMeXg7eC9Q== X-Received: by 2002:a17:903:1112:b0:205:6a4c:9a20 with SMTP id d9443c01a7336-208d83d67a2mr41243665ad.34.1726843018864; Fri, 20 Sep 2024 07:36:58 -0700 (PDT) Received: from hermes.local (204-195-96-226.wavecable.com. [204.195.96.226]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-207a095944bsm86918455ad.238.2024.09.20.07.36.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 20 Sep 2024 07:36:58 -0700 (PDT) Date: Fri, 20 Sep 2024 07:36:57 -0700 From: Stephen Hemminger To: David Marchand Cc: Isaac Boukris , users@dpdk.org Subject: Re: Accuracy of rte_get_tsc_hz() compared to linux Message-ID: <20240920073657.342332a7@hermes.local> In-Reply-To: References: <20240919152148.45a19343@hermes.local> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-BeenThere: users@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK usage discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: users-bounces@dpdk.org On Fri, 20 Sep 2024 09:26:05 +0200 David Marchand wrote: > On Fri, Sep 20, 2024 at 12:22=E2=80=AFAM Stephen Hemminger > wrote: > > Sigh. exposing tsc frequency through sysfs is a Redhat extension > > that never got merged upstream. =20 >=20 > Counter sight :-). >=20 > Not sure where this assertion comes from. > I see no trace of this downstream: RH policy is "upstream first". >=20 I missed the driver stuff in original mail and assumed that since it wasn't in upstream (or Debian) that it came from Redhat. Sorry. It would be good if kernel exposed it, and there was a proposal to do that, but it seemed to die from "no one should ever need or care abou= t that" https://lwn.net/Articles/388263/