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 072AD43DAF; Tue, 2 Apr 2024 02:46:29 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 7FF91402D4; Tue, 2 Apr 2024 02:46:28 +0200 (CEST) Received: from mail-pf1-f174.google.com (mail-pf1-f174.google.com [209.85.210.174]) by mails.dpdk.org (Postfix) with ESMTP id 430B340151 for ; Tue, 2 Apr 2024 02:46:27 +0200 (CEST) Received: by mail-pf1-f174.google.com with SMTP id d2e1a72fcca58-6e6f4ad4c57so3676974b3a.2 for ; Mon, 01 Apr 2024 17:46:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=networkplumber-org.20230601.gappssmtp.com; s=20230601; t=1712018786; x=1712623586; 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=RbV+ZoLHvdqzxCHrLVkaqeEOjUpDZSLCIf5r3yJ/oUE=; b=rV5d5bobfaegMU5UMQQa9ye9NZmHFn7MTtdOtesZHKNopvlBCoHS+RZ/EPOb+EGcN+ Yewvv3M/iwY59Ijt3rsWRcqCpz/HDY+ARJxsH7F2kXbdAD4WCvUlyIhrZj/UhrzLhDlk FtrPTGwGCKBskEk8Ai9AfcKRtO9TnDQMx9QMMjeBZn7qSSLQzz2rzU/fhmLakarsP17e nUC9CNTUraFP89kIMcgol+C4kUNUYOMDqUMsRdSuQLFcjCoyLzFmNV23UjR++diU57TZ xPVp6aT0XKgcV1OdDQstBAisVfPvvLOlzKx8FkFl9WmcnovReaGbyv4ctk7C1aZexJC+ X6yg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1712018786; x=1712623586; 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=RbV+ZoLHvdqzxCHrLVkaqeEOjUpDZSLCIf5r3yJ/oUE=; b=du+dUp/ZqvktlV2Q43xv2FaBVWayaCzQAI75t7evBXH8y3Ssc1nUO+rXb/LlUJBkdM 4bEZ6i7SobrJ3YT4lG1NwKqNhBFezfMpVfOlixeYnNqRinzr8HbHk8JxaxdGv4o1JbA/ 1IkOEjRAqDMzklYqF9OkvdGrgJyLVe35kzt2lOmJ58kimMymX2fFnmya72Kydi5JJ2vx aaotVSkR/HUl6R4YK6Ny4k5P+k5QJ62AhbsPGRxhCtV8ROC1rLpmrNtZ4GCtaRlGQxPl YCYoj/m2vDxz9U0CWBslfSsLLsAiGIll/WEcqD0WAg0o7vxFp6NyemicpUtySPlVVGgA lk5w== X-Forwarded-Encrypted: i=1; AJvYcCX6zyqBoHwuELgrA68Az6T9xtSUAzl45frsyv4mmVaKFxt5pu51+GW7tyRra9LoEj6ZI4sL6l14zA9Kt/4= X-Gm-Message-State: AOJu0YwAu3c0iBWV0GXgD8lp8fq5qoeiaOIdQxDMmBiIqcR88SmxNs06 ZZDJpjxYXKkgSCNYC+gEyT74CUQBrzv76DoXMDzUMJsfJuDf2Imxjvg1mm5r+NE= X-Google-Smtp-Source: AGHT+IE88Hg9+vEh8q8LV49kxstViCGCyGNGra/EiPjz0i9JpzyOozU8GwvIqdr7+3cbRiujVKRGSg== X-Received: by 2002:a05:6a00:2d9e:b0:6ea:e009:1ae6 with SMTP id fb30-20020a056a002d9e00b006eae0091ae6mr14423215pfb.25.1712018786326; Mon, 01 Apr 2024 17:46:26 -0700 (PDT) Received: from hermes.local (204-195-123-203.wavecable.com. [204.195.123.203]) by smtp.gmail.com with ESMTPSA id e2-20020aa78242000000b006eab7ca005esm8836598pfn.18.2024.04.01.17.46.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 01 Apr 2024 17:46:26 -0700 (PDT) Date: Mon, 1 Apr 2024 17:46:24 -0700 From: Stephen Hemminger To: Patrick Robb Cc: David Marchand , dev , Aaron Conole , ci@dpdk.org, Cody Cheng Subject: Re: pcapng_autotest unit test false positive Message-ID: <20240401174624.124d2f2f@hermes.local> In-Reply-To: References: <20240322163430.444bed0c@hermes.local> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit 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 On Mon, 1 Apr 2024 18:26:44 -0400 Patrick Robb wrote: > Another idea - maybe multiple timestamps are gathered from different > CPU registers during the same test, and they are misaligned for that > reason. Maybe we can try reducing the cores for each unit test to 1 > and checking whether the issue persists. TSC is expected to be sync'd between cores. But of course packets can arrive out of order on different cores.