From patchwork Thu Jan 21 20:52:59 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chuck Lever III X-Patchwork-Id: 12037801 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E36CAC433E0 for ; Thu, 21 Jan 2021 21:18:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B716722BEF for ; Thu, 21 Jan 2021 21:18:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726567AbhAUVSj (ORCPT ); Thu, 21 Jan 2021 16:18:39 -0500 Received: from mail.kernel.org ([198.145.29.99]:32792 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727060AbhAUUyt (ORCPT ); Thu, 21 Jan 2021 15:54:49 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id BF2FA23A5A; Thu, 21 Jan 2021 20:53:00 +0000 (UTC) Subject: [PATCH v1 0/2] Two small NFSD/RDMA scalability enhancements From: Chuck Lever To: linux-nfs@vger.kernel.org, linux-rdma@vger.kernel.org Date: Thu, 21 Jan 2021 15:52:59 -0500 Message-ID: <161126216710.8979.7145432546367265892.stgit@klimt.1015granger.net> User-Agent: StGit/0.23-29-ga622f1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org The following series reduces the work done by the NFS/RDMA server- side Receive completion handler in two ways. Details are in the patch descriptions. The Receive completion handler is single-threaded per transport. The less work the handler has to do per completion, the better the server's receive code scales. --- Chuck Lever (2): svcrdma: Reduce Receive doorbell rate svcrdma: DMA-sync the receive buffer in svc_rdma_recvfrom() net/sunrpc/xprtrdma/svc_rdma_recvfrom.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) -- Chuck Lever