From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 6C456A00C4; Thu, 4 Jun 2020 16:17:53 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id C5BA11D5DC; Thu, 4 Jun 2020 16:17:52 +0200 (CEST) Received: from inbox.dpdk.org (xvm-172-178.dc0.ghst.net [95.142.172.178]) by dpdk.org (Postfix) with ESMTP id 4A2A41D453 for ; Thu, 4 Jun 2020 16:17:51 +0200 (CEST) Received: by inbox.dpdk.org (Postfix, from userid 33) id 1C241A00C5; Thu, 4 Jun 2020 16:17:51 +0200 (CEST) From: bugzilla@dpdk.org To: dev@dpdk.org Date: Thu, 04 Jun 2020 14:17:50 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: DPDK X-Bugzilla-Component: core X-Bugzilla-Version: 20.02 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: vrpolak@cisco.com X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: Normal X-Bugzilla-Assigned-To: dev@dpdk.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter target_milestone Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.dpdk.org/ Auto-Submitted: auto-generated X-Auto-Response-Suppress: All MIME-Version: 1.0 Subject: [dpdk-dev] [Bug 487] Worse performance with DPDK driver when MTU is set to 2022 or less X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" https://bugs.dpdk.org/show_bug.cgi?id=3D487 Bug ID: 487 Summary: Worse performance with DPDK driver when MTU is set to 2022 or less Product: DPDK Version: 20.02 Hardware: All OS: All Status: UNCONFIRMED Severity: normal Priority: Normal Component: core Assignee: dev@dpdk.org Reporter: vrpolak@cisco.com Target Milestone: --- This is a copy of issue VPP-1876 [0], opened against VPP project. See the description and comments there (or let me know and I will copy them here). Performance of VPP (NIC: Intel-xxv710) depends on MTU value set, but only w= hen DPDK driver is used. That does not prove the bug is in DPDK, but it is suspicious enough for me to open this Bug against DPDK. I tried to reproduce the behavior using other DPDK applications, but they t= end to hit the line rate regardless of MTU. Is there a DPDK application that intentionally wastes some cycles, so I can try to confirm its performance depends on MTU value? [0] https://jira.fd.io/browse/VPP-1876 --=20 You are receiving this mail because: You are the assignee for the bug.=