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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 76692C7EE29 for ; Fri, 9 Jun 2023 11:58:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239800AbjFIL6L (ORCPT ); Fri, 9 Jun 2023 07:58:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48442 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239295AbjFIL6D (ORCPT ); Fri, 9 Jun 2023 07:58:03 -0400 Received: from mo4-p01-ob.smtp.rzone.de (mo4-p01-ob.smtp.rzone.de [85.215.255.54]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8B6CD35BC for ; Fri, 9 Jun 2023 04:57:33 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1686311849; cv=none; d=strato.com; s=strato-dkim-0002; b=FsJQR3Tc07NiM/n6LQksnp678Qin0+agygLE7aq4Qcir9ttR4aXpR+GjfKXVopr8l2 EFSgtATlBTQ/2geFw2Z/g41b122bSGKqpdxi2qyWxBjj0k+jLH4iuIEYZZn92AfjS5Wz t5O/VhUkW1UFA380MiKf9w66u3URQDkUE6TU6s3ntPs92yceaIf4M379xYCk9bD+p0e7 U++Ad9jpqXBD9i1hAJoyjiOsutn2utErOwS/Nz9DaH6kOYOZGaVSKqVnpGk+ufEl5xG5 GmEeHoXBqcZ+m3rXFFrzDb9x9qNpXbdUvUHpp8ZhvVAAsw0fwLEYCsxNXD0ikow8EI09 sFlQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; t=1686311849; s=strato-dkim-0002; d=strato.com; h=References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Cc:Date: From:Subject:Sender; bh=vRq8ae7jWYtehtlg04q7apnyU2ut1Gx4bpA4PsnAFFU=; b=XfVz+A89j7JHJz9Sf4bUxyQFOWb3gLzVGknOerkUSYyKR1tVWRtNoUcm/dNYkJnYSP 1e0mWzjWIhW5zzwXlITE5DldpZ1LfIXZU7b8Cx/omx3kmVymmSxfdC0WAJu5ypmKluYo I3jkbC+5ygEhYJNxkUqpqFidhAv/+wGYCO2MWt6uSoVmJUwyJLPaf1LB/FhVRBOm2fCz vIypOrPSC2CLJhu56Ha4nuPXm5W3jBUaoLb46hxTI5ru5Mkpkb1gZo1g/Yteo+IN/Gfl mhP3GpYS32uoPE95tC8s6KR1Ng56l7JXgvrU2zjCEofvxMlM7tM8vtfVs8J0N2d7hp+x n8GQ== ARC-Authentication-Results: i=1; strato.com; arc=none; dkim=none X-RZG-CLASS-ID: mo01 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; t=1686311849; s=strato-dkim-0002; d=chronox.de; h=References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Cc:Date: From:Subject:Sender; bh=vRq8ae7jWYtehtlg04q7apnyU2ut1Gx4bpA4PsnAFFU=; b=FYQQyAcf359sE/nAIOrGFpOgjT/xMFcUjwB5562M4xnQ1fhQ1In9Rp1LFaWReYvrnq 3iOLpMg3gHNvYErLSYB/1KeA3jbK3sKc5ByJ/jgyJmoN0PbM/EyKz62l+e/bhHWIV+Rr WIkW/6Yxlfy6XXEoWtnjUyMhK4SgHgVFiC1+m2tug6WFxUEjgD4astWpUIVGWWBr5MpV pv4kIP8axBrynoZ/Xc0Q9y6FP9lY17hbQT/AMj9l2uZCObd8VEbD9tHByeAtD5UBBVA3 9rnuvssJI9jd4qOPd56ISUCPQXH4CGALqNocoGA8lmgkU7vXh3jDIQjvihCZOewkeUQ9 akWw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; t=1686311849; s=strato-dkim-0003; d=chronox.de; h=References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Cc:Date: From:Subject:Sender; bh=vRq8ae7jWYtehtlg04q7apnyU2ut1Gx4bpA4PsnAFFU=; b=zZatpjSOYGHysDNPj6vB3K0NFdKiQE8emo1fEE6k4ZjWAqkGmVwo7DZIPdKl4U7Ws7 gA4fjAslI/a3MHJVrRBA== X-RZG-AUTH: ":P2ERcEykfu11Y98lp/T7+hdri+uKZK8TKWEqNyiHySGSa9k9y2gdNk2TvDz0d0iwLwE=" Received: from tauon.chronox.de by smtp.strato.de (RZmta 49.5.3 AUTH) with ESMTPSA id qe6984z59BvRgyL (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256 bits)) (Client did not present a certificate); Fri, 9 Jun 2023 13:57:27 +0200 (CEST) From: Stephan Mueller To: kernel test robot Cc: oe-lkp@lists.linux.dev, lkp@intel.com, Linux Memory Management List , Herbert Xu , linux-crypto@vger.kernel.org, ying.huang@intel.com, feng.tang@intel.com, fengwei.yin@intel.com, oliver.sang@intel.com Subject: Re: [linux-next:master] [crypto] bb897c5504: stress-ng.af-alg.ops_per_sec -8.0% regression Date: Fri, 09 Jun 2023 13:57:27 +0200 Message-ID: <1697789.S9sCK8dtJg@tauon.chronox.de> In-Reply-To: <202306081658.d5c86ae9-oliver.sang@intel.com> References: <202306081658.d5c86ae9-oliver.sang@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org Am Freitag, 9. Juni 2023, 10:02:32 CEST schrieb kernel test robot: Hi, > Hello, > > kernel test robot noticed a -8.0% regression of stress-ng.af-alg.ops_per_sec > on: > > > commit: bb897c55042e9330bcf88b4b13cbdd6f9fabdd5e ("crypto: jitter - replace > LFSR with SHA3-256") > https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master > > testcase: stress-ng > test machine: 36 threads 1 sockets Intel(R) Core(TM) i9-10980XE CPU @ > 3.00GHz (Cascade Lake) with 128G memory parameters: Thank you for the report, but this change in performance is expected to ensure proper entropy collection. I assume that the jitterentropy_rng is queried via AF_ALG. Considering that the amount of data to be generated (and thus the effect of the performance degradation) is small, there should be no noticeable impact on users. Ciao Stephan