From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from 190-102-104-130.static.hvvc.us (190-102-104-130.static.hvvc.us [190.102.104.130]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D783338F91 for ; Wed, 23 Apr 2025 01:21:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=190.102.104.130 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745371298; cv=none; b=XA5+kbFRKb/eBmSrCZLoMngvwq/RKYFAcBXaZPokQ2/i/dbSG6uRIPWAejFGbcHw+HMWExiuG6HJCwvWi2SpWKH/ggLW+W9FcPv91H8x/gZR5WOPvagBvxiyiM3GNLN3KYEQE1EMf3sV+reEafvow0YDJyF1eYdniySjwm+2Hrg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745371298; c=relaxed/simple; bh=8hxQ4bVtRg7C2EkHwlLBO27eCchHZAwpqN2l5qTpA+0=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=N26pkmRn/CsIAX0N/tdDODnYTkqVRsc6sS+byO4/rccO8zfbOCA543BXrofTu3VnBsgPEXcX/W5AqmCaEQ+hnk3TZ6006J8+5mnpI99VcY2uzvAZrZx7dZjt20tirxj4zLSrJ4Ms6z4e0kZubWHJkSSvDt3vgvBa+V3vGLh1fro= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=phoronix.com; spf=pass smtp.mailfrom=phoronix.com; arc=none smtp.client-ip=190.102.104.130 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=phoronix.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=phoronix.com Received: from c-24-15-38-32.hsd1.in.comcast.net ([24.15.38.32]:6175 helo=[192.168.1.194]) by milan.phoronix.com with esmtpsa (TLS1.3) tls TLS_AES_128_GCM_SHA256 (Exim 4.98.1) (envelope-from ) id 1u7OOI-0000000EJsP-1qhP; Tue, 22 Apr 2025 20:55:04 -0400 Message-ID: <896a67ec-9f48-4137-9d34-4bb16861e284@phoronix.com> Date: Tue, 22 Apr 2025 19:54:59 -0500 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: Linux 6.15-rc3 To: Shakeel Butt Cc: Dave Airlie , Vlastimil Babka , Alexei Starovoitov , Sebastian Sewior , Andrew Morton , Linus Torvalds , Alexei Starovoitov , Linux Kernel Mailing List References: Content-Language: en-CA From: Michael Larabel In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - milan.phoronix.com X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - phoronix.com X-Get-Message-Sender-Via: milan.phoronix.com: authenticated_id: michael@phoronix.com X-Authenticated-Sender: milan.phoronix.com: michael@phoronix.com X-Source: X-Source-Args: X-Source-Dir: On 4/22/25 7:12 PM, Shakeel Butt wrote: > Ccing Michael > > On Tue, Apr 22, 2025 at 04:37:59PM -0700, Alexei Starovoitov wrote: >> On Tue, Apr 22, 2025 at 4:01 PM Dave Airlie wrote: >>>> Alexei Starovoitov (2): >>>> locking/local_lock, mm: replace localtry_ helpers with >>>> local_trylock_t type >>> This seems to have upset some phoronix nginx workload >>> https://www.phoronix.com/review/linux-615-nginx-regression/2 >> 3x regression? wow. >> Thanks for heads up. >> I'm staring at the patch and don't see it. >> Adding more experts. > Hi Michael, > > Can you please share a bit more on your nginx workload and how can we > reproduce locally? In the mean time, I can try netperf locally to > reproduce. > > I do have some followup optimizations [1, 2] which hopefully are aimed > for next release but we can try those as well. > > [1] https://lkml.kernel.org/r/20250416180229.2902751-1-shakeel.butt@linux.dev > [2] https://lkml.kernel.org/r/20250410025752.92159-1-shakeel.butt@linux.dev > > thanks, > Shakeel The Nginx test case is a fairly stock Nginx build measuring HTTPS throughput for serving some static web page with Wrk used as the stressor, all on the same host for stressing just the local host. All of the assets and execution scripts used for that Nginx test in raw form are here - https://openbenchmarking.org/innhold/c7b555063f5732b4f1bb08444e258984d1dbb94b Let me know if any problems reproducing, etc. Thanks, I can try out those patches tomorrow. At the moment on that same server currently running through some of the other workloads I also found regressed on Linux 6.15 GIt to see if attributed to same commit or not. So far, when comparing 51339d99c0131bc0d16d378e9b05bc498d2967e2 as the first bad commit against the parent commit a30951d09c33c899f0e4aca80eb87fad5f10ecfa, I was able to reproduce a regression for the OpenFOAM CFD software using drivaerFastback with the small mesh size: 30.6 seconds on the bad commit, 23.6 seconds on the parent. So that too seems to be related while the other tests are still running at the moment. Michael