From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-qv1-f41.google.com (mail-qv1-f41.google.com [209.85.219.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 11D6560DEF; Thu, 29 Feb 2024 09:41:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.219.41 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709199690; cv=none; b=EAzvmtEsz/DeGrMtYpXsIDORSB6mFJY9g0vDm2OV1jm3EfST5uUyRpuGJbCct8IJGcD6Jze/JjP5ZSXQjVOInhzX5OICrhWqyerXn9qFmUteAq53drD4oQUCRBRnUoVkptjJh/776BVzHLzgBYPiRoCheb+uB+xDQyGzdGpENxg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709199690; c=relaxed/simple; bh=9PDCV/8fUy/F52NLTEXm+q3B0bNu13FfYnbqMHToU+M=; h=MIME-Version:References:In-Reply-To:From:Date:Message-ID:Subject: To:Cc:Content-Type; b=A3N0w/R3CmSgDj5yRH/adXfgKik/OT+ywht+iBz0WPgREMMZftcvHMeTfpybbPGdFFv6T0LS5Wjw4f+JA5Sd9g3REjH4XsldPGQQBhoPPU8J0qXb7Pi0hMP0NM9XcoJHe9BFWF6axLx1JLmVLnpB0NKeFqjrvevrsc/p/F5wOrU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=Q/O7NcYD; arc=none smtp.client-ip=209.85.219.41 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Q/O7NcYD" Received: by mail-qv1-f41.google.com with SMTP id 6a1803df08f44-68fcd9d336bso1332676d6.1; Thu, 29 Feb 2024 01:41:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1709199688; x=1709804488; darn=vger.kernel.org; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=9PDCV/8fUy/F52NLTEXm+q3B0bNu13FfYnbqMHToU+M=; b=Q/O7NcYDf1NzlPYvjkqx2k81+uEkQpOaPwO+xJNXVAmuImn2jQWQCcUINhicmooKKL sN+Grx7dQKFSsvODkfZLquGvRBClXm4HPRw6M9ZAFDxXrsWLab+IM63YB26Yl7hw3dqF Xp0mjAeZ13WSnzv4ghf6uVYNeV+ruV+LNcxzRj/VjNt5de0kLQzHHirQGhdStHKkFyCX LMSRlLES0KFeFtTgUpgStvVh4jjQTjt4wXppz7fgNO/K3BawIY0N918RQJDH4Q2/edM1 ZJkDiRkoqo9ABG2IZjmCVK1RcRqylJjH+G10iT/6mNoQOjxCfuDp5aoeumF7Ukm9JlRL Q5ug== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1709199688; x=1709804488; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=9PDCV/8fUy/F52NLTEXm+q3B0bNu13FfYnbqMHToU+M=; b=RoSinrz/m3qlRXB6L79YpkcSSvh34bDokE0EGDgliRW39//yQZVi2Zus3dxulcnyLd RKUZAxaSgGi2qXrQQfac1YyS3cRfNT8/AOgkJi8zfOQI0Le7ivOfKvU3X2CEYw8JNld1 2+0kJkvPG4KUtK0WIFq6IIwbzgN3aC0HxJ+LpU5QEkVE+BZ1bjbed58V33pRkx4toyM9 5i9ylI2b5eexHnJBo6lkYFSHxhs0sSovHtXZVRhzXOZfm8Q7ysUFkKh7vLXOEnJt1DCc j3TCbKhf0Hd+WWULViL1DzasYNxKKpAtqojKc4Kjq2vHeIjzH304Z1Eupptbp6Nckudn pkNw== X-Forwarded-Encrypted: i=1; AJvYcCX7jDbfou6f1elNQqdIbyUK3yJt9rNXV3KE02rl2QLqnb0GH262XIKjLXzXsBMu1xKTV0hdm0NTkIc/aN2arK6nBvII7UZDUJX15CeRw2xr1fKEXCzlWFj8MgrUpDCZgaFeWJj6VII10BE5KGKd5rvE6Hp48pvhYzfr0vac2ZsI X-Gm-Message-State: AOJu0YxceDxV74uPLj+PUST/5ewnC20bGqbjqKCf4Q9q47sPISnYCrZA DIUmBWYvYaJOc+1Dv2vLXZrTfeVcbCOYE843RB/95yid2V2padoGrlwGOne7a0vsnFCN5lQDzqo ENw6Qf4cpCXFCXT/vu//fm76qm+Q= X-Google-Smtp-Source: AGHT+IEpCqJchuzt4ZrrtkL5VqWHMo2IqI4G008f5KoIJLRebFaws+E4nICSMPOejPHN06gVklGvoH9c8XrDbS+T8NU= X-Received: by 2002:a05:6214:27c6:b0:68f:6000:6ac5 with SMTP id ge6-20020a05621427c600b0068f60006ac5mr1570280qvb.4.1709199687911; Thu, 29 Feb 2024 01:41:27 -0800 (PST) Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 References: <2d87509a-1515-520c-4b9e-bba4cd4fa2c6@linux.intel.com> <1126ed0a-bfc1-a752-1b5e-f1339d7a8aa5@linux.intel.com> <34d7ab1b-ab12-489d-a480-5e6ccc41bfc3@infradead.org> <10487018-49b8-4b27-98a1-07cee732290d@infradead.org> <4f34b6a8-4415-6ea4-8090-262847d606c6@linux.intel.com> <3ea25443-1275-4c67-90e0-b637212d32b5@leemhuis.info> <1e719367-01ae-565a-2199-0ff7e260422b@linux.intel.com> <410817b8-1cf9-4285-b20b-f1fa0513cee8@leemhuis.info> <87r0gz9jxp.ffs@tglx> <098670097a6fd59f3e254c5294882f3fa12e3c65.camel@gmail.com> <87y1b595y0.ffs@tglx> <960fd112b294a902e1bea1fdd8e04a708a05cf45.camel@gmail.com> In-Reply-To: <960fd112b294a902e1bea1fdd8e04a708a05cf45.camel@gmail.com> From: Mikhail Gavrilov Date: Thu, 29 Feb 2024 14:41:16 +0500 Message-ID: Subject: Re: This is the fourth time I've tried to find what led to the regression of outgoing network speed and each time I find the merge commit 8c94ccc7cd691472461448f98e2372c75849406c To: Thomas Gleixner , Mathias Nyman , Linux regressions mailing list Cc: "Christian A. Ehrhardt" , niklas.neronin@linux.intel.com, Linux List Kernel Mailing , Greg KH , linux-usb@vger.kernel.org, x86@kernel.org, netdev@vger.kernel.org, Randy Dunlap Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Tue, Feb 27, 2024 at 11:03=E2=80=AFPM wro= te: > > On Tue, 2024-02-27 at 18:23 +0100, Thomas Gleixner wrote: > > If we want to understand why CPU0 is problematic, then you need to > > use tracing to capture what's going on on CPU0 vs. other CPUs. > > I am not hear what kind of profiler software you prefer. > I famous with sysprof and attach here captures for both cases CPU0 vs > CPU23. I hope this helps clear things up. > Sorry for the noise. Because I am unsure whether you received or not my previous message with captures. I upload them to the mega file exchange server and share links below. capture CPU0: https://mega.nz/file/Ik5XiZAS#Hra7Xtzplp8xcHYFj4JXnpp8T-0UA0n= hNSIJJLEcSBk capture CPU23: https://mega.nz/file/swg0CQ4C#PvGv_WXmtnATD7tNun5xz-lfA5GGqA= -KOv1ZbVRJ_lI --=20 Best Regards, Mike Gavrilov.