From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-lj1-f181.google.com (mail-lj1-f181.google.com [209.85.208.181]) (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 B35BEEA8 for ; Wed, 25 May 2022 08:58:06 +0000 (UTC) Received: by mail-lj1-f181.google.com with SMTP id q1so14059767ljb.5 for ; Wed, 25 May 2022 01:58:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=KQj7AtJgNaYpUrKmSfOG/MaLkEoVxOErcSY4pQJ5csk=; b=RALk5RoedwkXDj5j8+/dSa6QQKPGAL5GTu/XM7HDK0hf3nv0wdWsw5ABQwufiqiajb w9Haou2Wsf/DX5RaVuD8uqxswLL9vHXLpnlvwc7+nfBIwRfow4YohiC5mkiZgnj1UWXz 2AvPhhvhvKuWqMb39CS/wLS49vF1POnA60Uo6RvrohTNtYCpZpw09U4/Bc5HQsvCU8IW OmjnO9jiMRN2GDkw0QHUF9Ao+WSfBWSnBfq8LIUX6dWp5X/Zs0YpuR/IymQGHqz1/Ki8 zpG3KIiGBymvly4Ne4cVyy02gN9EwyMfEl5jgFmgFEu6pf1b0IeJCJkCy7omHixagTyQ zb9w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=KQj7AtJgNaYpUrKmSfOG/MaLkEoVxOErcSY4pQJ5csk=; b=FkgwN+rqUBcmPFJCYvU09kAFpty40QsgePOa4R139bA68KpcXuIO9L3M1DqgfA1a6x +de7DJz89oD+0axbil2EwzCjloZy+N1ntiyjRNpL9aTh2k2300B9s3nIKQyVwwxtbovE ZCDq/407JBqw+9VUbG48nQtHaUA8v5QCZkkrVrtBhGTU0drjnoUdg1dDTnZUF7PHYYvm 4gerSadtjBrtDFscUjhem0UOUt3MgvXh46ix+o+JDvnImLS7CGrlxWHrkr83Qpb5kSA2 spKvibOeuiRNNZGdpWWOx3hHrmMZ81l2WJASN6WFz5a/LvHb9dfOno2Wv8CdkGRPEQrm SpVg== X-Gm-Message-State: AOAM531aKf7/xcJL+Wh48NRjAHbW8mXoVA/1tNtkaTXWze6Zwf6f5yav t3M0unKISEWZozYr8boLSP0= X-Google-Smtp-Source: ABdhPJx6Xepue3dRzqeo54eepjGOTH0miyHt9CK5Mvmj+X/cBmZjN4kMbzn7anbyevgV4iYAK4vuYA== X-Received: by 2002:a2e:bf01:0:b0:247:dfe7:62dc with SMTP id c1-20020a2ebf01000000b00247dfe762dcmr18781584ljr.365.1653469084586; Wed, 25 May 2022 01:58:04 -0700 (PDT) Received: from mobilestation ([95.79.189.214]) by smtp.gmail.com with ESMTPSA id x19-20020a056512131300b00478628920e1sm2030430lfu.103.2022.05.25.01.58.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 25 May 2022 01:58:03 -0700 (PDT) Date: Wed, 25 May 2022 11:58:01 +0300 From: Serge Semin To: Dave Jiang Cc: Alexander Fomichev , ntb@lists.linux.dev, linux@yadro.com, Jon Mason , Allen Hubbe , Guo Zhengkui , Alexander Fomichev Subject: Re: [PATCH v3 0/3] ntb_perf: add new 'latency' test set Message-ID: <20220525085801.4r2l44vqiaqrbjk4@mobilestation> References: <20220513193704.36868-1-fomichev.ru@gmail.com> <60dd9f2e-57b1-7c9d-ca99-568c37fe286a@intel.com> Precedence: bulk X-Mailing-List: ntb@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <60dd9f2e-57b1-7c9d-ca99-568c37fe286a@intel.com> Hi Dave On Mon, May 23, 2022 at 11:38:35AM -0700, Dave Jiang wrote: > > On 5/13/2022 12:37 PM, Alexander Fomichev wrote: > > From: Alexander Fomichev > > > > The ntb_perf test provides a tool for NTB hardware performance > > evaluation. For software impact elimination the test uses a simple method > > (let's call it 'burst' mode), when the local system sends to the remote > > system a data set and counts time interval until hardware completion > > report, without the remote side confirming, nor data integrity check. > > The measured metric is a 'burst' throughput bandwidth of NTB connection. > > > > The patches extend ntb_perf with 3 new metrics: > > 1) Burst latency > > 2) Poll latency > > 3) Doorbell latency > > > > The resulting test set is fully backward compatible. > > > > Alexander Fomichev (3): > > ntb_perf: extend with burst latency measurement > > ntb_perf: extend with poll latency measurement > > ntb_perf: extend with doorbell latency measurement > > > > drivers/ntb/test/ntb_perf.c | 826 +++++++++++++++++++++++++++++++++++- > > 1 file changed, 810 insertions(+), 16 deletions(-) > > Looks ok to me. Probably should get Serge's ack. Ok. I'll have a look at the series on this week. -Sergey > > Reviewed-by: Dave Jiang >