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 X-Spam-Level: X-Spam-Status: No, score=-5.6 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 487C8C433E0 for ; Mon, 10 Aug 2020 20:10:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CBAF120838 for ; Mon, 10 Aug 2020 20:10:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=fieldses.org header.i=@fieldses.org header.b="hPpE0ZI6" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726474AbgHJUKD (ORCPT ); Mon, 10 Aug 2020 16:10:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51150 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726405AbgHJUKD (ORCPT ); Mon, 10 Aug 2020 16:10:03 -0400 Received: from fieldses.org (fieldses.org [IPv6:2600:3c00:e000:2f7::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 23733C061756 for ; Mon, 10 Aug 2020 13:10:03 -0700 (PDT) Received: by fieldses.org (Postfix, from userid 2815) id 6DB4C3C20; Mon, 10 Aug 2020 16:10:01 -0400 (EDT) DKIM-Filter: OpenDKIM Filter v2.11.0 fieldses.org 6DB4C3C20 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fieldses.org; s=default; t=1597090201; bh=BqD9WGK9PCOHEu1GAC1aMnPmz2OkBVttHt2uvXMj5RE=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=hPpE0ZI6/4YvHMAmYZnXrFU1wePsSowyBrZ/eEG9AyXyqG3kgjBkRgk/Q6Bg54IGA PCS8BJkFJ3smk06gXu7rCH84uOgl4Qcb+M9Q9WQj2kEPw4j9fpOr9HM0AlU13bmCEB qD4sPkL6UIMqUoCI8AR9FgxrfEdmTfSPpNH2aTz4= Date: Mon, 10 Aug 2020 16:10:01 -0400 From: Bruce Fields To: Chuck Lever Cc: Linux NFS Mailing List Subject: Re: still seeing single client NFS4ERR_DELAY / CB_RECALL Message-ID: <20200810201001.GC13266@fieldses.org> References: <139C6BD7-4052-4510-B966-214ED3E69D61@oracle.com> <20200809202739.GA29574@fieldses.org> <20200809212531.GB29574@fieldses.org> <227E18E8-5A45-47E3-981C-549042AFB391@oracle.com> <20200810190729.GB13266@fieldses.org> <00CAA5B7-418E-4AB5-AE08-FE2F87B06795@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <00CAA5B7-418E-4AB5-AE08-FE2F87B06795@oracle.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-nfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org On Mon, Aug 10, 2020 at 04:01:00PM -0400, Chuck Lever wrote: > Roughly the same result with this patch as with the first one. The > first one is a little better. Plus, I think the Solaris NFS server > hands out write delegations on v4.0, and I haven't heard of a > significant issue there. It's heuristics may be different, though. > > So, it might be that NFSv4.0 has always run significantly slower. I > will have to try a v5.4 or older server to see. Oh, OK, I was assuming this was a regression. > Also, instead of timing, I should count forward channel RPCs and > callbacks, or perhaps the number of DELAY responses. Thanks for looking into this! --b.