From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 B089B1BD9EA; Wed, 30 Oct 2024 22:33:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730327580; cv=none; b=QbioGjStXfMw2Le+7LPa5YtHCfhU8rNdvj6PhWHQCpbxWXRc/MLkd5H+lat5EZmluwglJZ1dLOOINvPnDHhYyIEgu/gRymMvdAZ6jJjE3r9r530pXVOLftv2YpZtu0zBp0FD3/K9xLtzxxtBqzNczl6s6qDht/LnOWiJJ1Vja1U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730327580; c=relaxed/simple; bh=pG2dV6wbFJ9/N3Eo79eG7sTCZARua6TPwKbzaZm5T8s=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=djjvXDPZUa9jc1MQ/hCfjx9mn5mfoacgiGgMZEYoU+pVwOztOimZwBEMJLZPJPYza5OEnRHm1NUDEFjveiEeR6Mfh+LZnDk18YtOE4i57ySfomEPCalP6rrUuaGsyrwZ/+VeUmI68bKvMCDOdZY9tnAp8bCDnHBeqxNb/2tgWv8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=TOLGBIAc; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="TOLGBIAc" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7E300C4CECE; Wed, 30 Oct 2024 22:32:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1730327580; bh=pG2dV6wbFJ9/N3Eo79eG7sTCZARua6TPwKbzaZm5T8s=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=TOLGBIAcEYrCYSFurialDE1/dDbk0s5VsobxcNkWosTwMWsHUtEwV2Dp6K1Bt2xB/ Fr9YO4uhhAZ+bYoWwuhY2pbaLrRSeZCZGIRh48gST8/NSWTSOpVy4vmedCkJGiHmok evunMKCuBVIHpmHm+FOgsiNNdCqGZnbXnl58AgDLjkC3DkO9NldpetChGi52nPYqxm O6ZwqatzbxIPcJW8GOiZeuM9otwid4W0Il7PCsaI1J094cFyXVVLrj2x3Yi1K/uHqf pK8aowBq29IKzesQio0R+lZ1Rty5SsD0ych9kGkC73wmjtsa6CtFfbObGwNhCGncFE CMtEjbWx7DpbA== Date: Wed, 30 Oct 2024 16:32:57 -0600 From: Keith Busch To: Christoph Hellwig Cc: Keith Busch , linux-block@vger.kernel.org, linux-nvme@lists.infradead.org, linux-scsi@vger.kernel.org, io-uring@vger.kernel.org, linux-fsdevel@vger.kernel.org, joshi.k@samsung.com, javier.gonz@samsung.com, bvanassche@acm.org, Hannes Reinecke Subject: Re: [PATCHv10 9/9] scsi: set permanent stream count in block limits Message-ID: References: <20241029155330.GA27856@lst.de> <20241030045526.GA32385@lst.de> <20241030154556.GA4449@lst.de> <20241030155052.GA4984@lst.de> <20241030165708.GA11009@lst.de> Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20241030165708.GA11009@lst.de> On Wed, Oct 30, 2024 at 05:57:08PM +0100, Christoph Hellwig wrote: > On Wed, Oct 30, 2024 at 10:42:59AM -0600, Keith Busch wrote: > > With FDP (with some minor rocksdb changes): > > > > WAF: 1.67 > > IOPS: 1547 > > READ LAT: 1978us > > UPDATE LAT: 2267us > > Compared to the Numbers Hans presented at Plumbers for the Zoned XFS code, > which should work just fine with FDP IFF we exposed real write streams, > which roughly double read nad wirte IOPS and reduce the WAF to almost > 1 this doesn't look too spectacular to be honest, but it sure it something. Hold up... I absolutely appreciate the work Hans is and has done. But are you talking about this talk? https://lpc.events/event/18/contributions/1822/attachments/1464/3105/Zoned%20XFS%20LPC%20Zoned%20MC%202024%20V1.pdf That is very much apples-to-oranges. The B+ isn't on the same device being evaluated for WAF, where this has all that mixed in. I think the results are pretty good, all things considered. > I just wish we could get the real infraѕtructure instead of some band > aid, which makes it really hard to expose the real thing because now > it's been taken up and directly wired to a UAPI. > one I don't know what make of this. I think we're talking past each other.