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 mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8D117EA3C4E for ; Thu, 9 Apr 2026 12:00:58 +0000 (UTC) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id A76414028F; Thu, 9 Apr 2026 14:00:57 +0200 (CEST) Received: from inbox.dpdk.org (inbox.dpdk.org [95.142.172.178]) by mails.dpdk.org (Postfix) with ESMTP id AE6C140276 for ; Thu, 9 Apr 2026 14:00:55 +0200 (CEST) Received: by inbox.dpdk.org (Postfix, from userid 33) id 9E0754AE6C; Thu, 9 Apr 2026 14:00:55 +0200 (CEST) From: bugzilla@dpdk.org To: dev@dpdk.org Subject: [DPDK/core Bug 1931] Broadcom BCM57608 Ethernet 100Gb 2-port QSFP112 Adapter - PCI-PT and SRIOV on VM Perf Degrade in 25.11 and 26.03 Date: Thu, 09 Apr 2026 12:00:55 +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: 25.11 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: sandeepr@hpe.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 attachments.created Message-ID: Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 X-Bugzilla-URL: http://bugs.dpdk.org/ Auto-Submitted: auto-generated X-Auto-Response-Suppress: All MIME-Version: 1.0 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org http://bugs.dpdk.org/show_bug.cgi?id=3D1931 Bug ID: 1931 Summary: Broadcom BCM57608 Ethernet 100Gb 2-port QSFP112 Adapter - PCI-PT and SRIOV on VM Perf Degrade in 25.11 and 26.03 Product: DPDK Version: 25.11 Hardware: All OS: Linux Status: UNCONFIRMED Severity: normal Priority: Normal Component: core Assignee: dev@dpdk.org Reporter: sandeepr@hpe.com Target Milestone: --- Created attachment 347 --> http://bugs.dpdk.org/attachment.cgi?id=3D347&action=3Dedit git bisect search offending commit perf test results [Steps to Reproduce] 1. Install RHEL 10 - 6.12.0-55.43.1.el10_0.x86_64 2. Tested with following latest BCM57608 driver and firmware: Driver:1.10.3-236.1.155.0 || firmware:235.1.164.6/pkg 235.1.164.14 Driver:1.10.3-237.1.131.0 || firmware:237.1.131.0/pkg 237.1.132.0 3. Install DPDK - Tested with 25.11 and 26.03 4. Start testpmd; command: with tuning params build/app/dpdk-testpmd -l 2-4 --main-lcore 2 -v -a 0000:07:00.0 -a 0000:08:00.0 --socket-mem=3D2048 -- -i --socket-num=3D0 --burst=3D64 --txd= =3D2048 --rxd=3D2048 --mbcache=3D512 --rxq=3D1 --txq=3D1 --nb-cores=3D2 --port-topo= logy=3Dpaired --forward-mode=3Dio '--port-numa-config=3D(0,0),(1,0)' --ring-numa-config= =3D0,0 --ring-numa-config=3D1,0 -a 5. Start RFC2544 Throughput Test - I used Hardware Traffic Gen [Xena]=20=20= =20 6. Result from my lab test: ---------------------------------------------------------------------------= ------------------ Frame Size 25.11 - BAD 26.03 - BAD 64 26.012 25.838 128 45.186 45.383 256 71.955 81.777 512 100.000 100.000 1024 100.000 100.000 1280 100.000 100.000 1518 100.000 100.000 ---------------------------------------------------------------------------= ------------------ Test Setup Info: HPE ProLiant DL345 Gen12 AMD EPYC 9845 160-Core Processor 2100 MHz Broadcom BCM57608 Ethernet 100Gb 2-port QSFP112 Adapter - PCIe Slot 1 [Additional Info] This issue is not seen with DPDK 25.07. DPDK 25.07 Result: Frame Size 25.07 - GOOD 64 45.635 128 79.789 256 100.000 512 100.000 1024 100.000 1280 100.000 1518 100.000 Test results of git bisect search for the offending commit: Ref attachment It looks like the performance degradation is mostly due to the multiple com= mits from both Intel and Broadcom between September and October 2025 around the 25.11-rc0-25.11-rc2 phase. After this commit, the performance has remained BAD even with DPDK 26.03. ---------------------------------------------------------------------------= ---------------------------- Date DPDK Version Commit ID Driver Description=20=20= =20=20=20=20=20=20=20=20=20=20 Result Oct 30, 2025 v25.11-rc2 ef86bb9c55 bnxt Add feature bit Rx = miss handling BAD ---------------------------------------------------------------------------= ---------------------------- [Expected result] Result must be similar or better than 25.07 result. [Actual result] 64b/128b/256b frame size performance degradation with 25.11 and 26.03. --=20 You are receiving this mail because: You are the assignee for the bug.=