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 20BF2A0A02 for ; Tue, 27 Apr 2021 17:13:43 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id D4E1B410FD; Tue, 27 Apr 2021 17:13:42 +0200 (CEST) Received: from mail-pg1-f176.google.com (mail-pg1-f176.google.com [209.85.215.176]) by mails.dpdk.org (Postfix) with ESMTP id 1586C410D8 for ; Tue, 27 Apr 2021 17:13:42 +0200 (CEST) Received: by mail-pg1-f176.google.com with SMTP id s22so21436946pgk.6 for ; Tue, 27 Apr 2021 08:13:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=networkplumber-org.20150623.gappssmtp.com; s=20150623; h=date:from:to:cc:subject:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=PG1Dz5AXZCiNat2hvNC0+F60WMTApHcZxefiYyPm/L8=; b=vH44n6wI+zXP9TuNIyx/5cxf92WzXQxjU70m90ucDna8RBCiFieSNMENoWqC37RMXT JIvhQfUp7tyokyVkpMMlsxeYlVNAuNHWW1xHT3ddBsAzAFmrnEbhVvBLyAWdzq0Szir3 vYMxfhdOj+ockC1HB96w7qC5aFSFl0ywBvBZwi5P58xGD2W+i6q+skoS8rdEMzEhaooJ Wlno7h4cldj27WcRh75QzuaMGx/964I62ANN9ZerxyAuOL6H0qZ1YN+IlFoxMZTQ9zfi chul5vp+8Q2pan1auWd3gyqXT6iUeI4OgTM5KfLCGcqNKserVYqSpb+kJxai9swcC454 skVg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=PG1Dz5AXZCiNat2hvNC0+F60WMTApHcZxefiYyPm/L8=; b=jlKXhFCG+UWLPFCXLulQoykYhUD2Q/kQDwgLdmqdH6LgHbDf9GtreMqW9BJyRLyIrW 5CjzIe+3WczX7eA1pdi1da4muGXqT0Vg5eB6nnIqUCWWo/i6gNFKUI1Gwu86LWmDdc5u c4biXGGm2v+3jtF7SiEwz2Ss46Cr9CYdUqIaOuRCAImi4Fi2q6JvkSsDMMBE6VEYoFoM ohXkId8W8rS1inWJZGYYQeilR3fPLSwZduoKWDodui5sQhgPtcNaWHV3bBCp7sMIJEZh RoCYGT84TNvHDhrOlT+snwIJpcI97G4ZKK03zakMwlGw40rMIrubbHKkyNgIOJDcuOu6 73mA== X-Gm-Message-State: AOAM532OkOhBVKm68GV6c77apCHg4PW9wsZ4izyjL9W+w2MFw5KLThfJ ENBz8Y3kXpAhGmhwbzI8H0xsNg== X-Google-Smtp-Source: ABdhPJy/w6KKNOdrAxD0l02MDKAOGfuQK5rSDlScnYRcgbNlmXyVzLZaNXiTZdf4ULnkm3Z5h2tNQQ== X-Received: by 2002:a65:43c9:: with SMTP id n9mr22126459pgp.19.1619536421169; Tue, 27 Apr 2021 08:13:41 -0700 (PDT) Received: from hermes.local (76-14-218-44.or.wavecable.com. [76.14.218.44]) by smtp.gmail.com with ESMTPSA id j20sm129925pgk.74.2021.04.27.08.13.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 27 Apr 2021 08:13:40 -0700 (PDT) Date: Tue, 27 Apr 2021 08:13:38 -0700 From: Stephen Hemminger To: vikram T Cc: users@dpdk.org Message-ID: <20210427081338.62ae1937@hermes.local> In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Subject: Re: [dpdk-users] Packet Drop seen when Oracle Linux upgrade to OL7.8 - DPDK 19.11 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 Sender: "users" On Tue, 27 Apr 2021 15:17:12 +0530 vikram T wrote: > Hi, > It was observed that in DPDK packet drops were observed when OS was > upgraded to Oracle Linux 7.8 i.e: > From *4.14.35-1818.3.3.el7uek.x86_64* ==> > *4.14.35-1902.300.11.el7uek.x86_64*. > > After reverting back to the older kernel (4.14.35-1818.3.3.el7uek.x86_64) > there were no packet drops. > DPK version being used is - DPDK v19.11. > > Any lead to understand the root cause would be appreciated. > What factors could affect the kernel upgrade? > > Regards > Vikram What driver and interface are you using (igb_uio, vfio?)