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 7693727456; Wed, 13 Nov 2024 01:48:36 +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=1731462516; cv=none; b=lwlS/zA8jwZlXpEJF7wlz2WRHeTMUDZKT3S9Ry03d1hrDsyHcwIhtmESgmTmrCl5rMYEHTHTGkEYtNjKIHJ/lVxfqeo+zOcyzVzNgYdFsfExeuIAb+sYmFszKEwQ1zLAPI2wcvzGuxoA1qoJIRVhCBWsajPNOg30SNA5lQ8ABmQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731462516; c=relaxed/simple; bh=xQ1mhHVslmUC2QbY0q+QhNLj6yI8XDQ7rKoBrcQS5pw=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=ucb+wn31H+TJWXXK4BKtc5whYPhngRTkYF3y5njVot7KTReD7WIHjLFLIYKzVKENcOa/fL9KiEUlwrvvt9zbekJBymaa/j0jc/wEQpBAvLTRIxvTCYtiipotvYgTgsNWN6u2+D7HDlCEntRAbjYOn6Sg1LlBnNfkwlq1ZQ6NwJ8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=bwwrLetE; 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="bwwrLetE" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C9AB3C4CECD; Wed, 13 Nov 2024 01:48:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1731462516; bh=xQ1mhHVslmUC2QbY0q+QhNLj6yI8XDQ7rKoBrcQS5pw=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=bwwrLetEC737zStk8SaH62f57O/zKIlZ7BIfBSktvbXmg8HeZTjSj5b9g8OsyprOc MTv97nIXAjr67yhBaExbRxE8+wr0D1RQXOeRDLyEZGiQpNXWsKkktieF3GwsZaIY4O y1GnYy6k2bQEFwE0UsQd64ieOXxmF2nD1Jyq+huCLdBZP1Y/qVw7LbZ/zBJOD8RJbq jjIelMoWI6AYp78Xley4pXSEtPxJaYk9M29HOlDPbDlL5BlNuffkcbAY1yVAsE4q+M 12WIbJon9P9QPhgTMSr/jhE7jiQaU2kn1DjEBba9PYDUuBDjr6ogimt8raE5rPdmFk 0LSphCYDgc4Lg== Date: Tue, 12 Nov 2024 17:48:34 -0800 From: Jakub Kicinski To: John Ousterhout Cc: netdev@vger.kernel.org, linux-api@vger.kernel.org Subject: Re: [PATCH net-next v2 00/12] Begin upstreaming Homa transport protocol Message-ID: <20241112174834.43231a32@kernel.org> In-Reply-To: <20241111234006.5942-1-ouster@cs.stanford.edu> References: <20241111234006.5942-1-ouster@cs.stanford.edu> Precedence: bulk X-Mailing-List: linux-api@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Mon, 11 Nov 2024 15:39:53 -0800 John Ousterhout wrote: > This patch series begins the process of upstreaming the Homa transport > protocol. Homa is an alternative to TCP for use in datacenter > environments. It provides 10-100x reductions in tail latency for short > messages relative to TCP. Its benefits are greatest for mixed workloads > containing both short and long messages running under high network loads. > Homa is not API-compatible with TCP: it is connectionless and message- > oriented (but still reliable and flow-controlled). Homa's new API not > only contributes to its performance gains, but it also eliminates the > massive amount of connection state required by TCP for highly connected > datacenter workloads. Hi John! Thanks for pushing forward! I wanted to give you a heads up that we're operating at 50% maintainer capacity for the next 2 weeks so the reviews may be more muted than usual. Don't hesitate to post new versions (typically ~once a week) if you want to address any incoming feedback and/or the build issues. HTH