Received: by 2002:a05:6a10:c604:0:0:0:0 with SMTP id y4csp35465pxt; Wed, 11 Aug 2021 13:51:51 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzj5dp+GOssYrPKrfS6DHAbKd81IqQbOVD9JAcOjA/M2qI0jYAIrlwa7hmMMgCi4jFn0uXO X-Received: by 2002:aa7:d144:: with SMTP id r4mr1003460edo.111.1628715111144; Wed, 11 Aug 2021 13:51:51 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1628715111; cv=none; d=google.com; s=arc-20160816; b=Tr6Hm6OiuHeLk1xtm8VwqbmcxzohvSUu+lyburPkpOIM6GSZe1PxiWHJx8ytfJFPbl QfLmUxbPBg/Fmf4nsrqbyLOxCZxcR1v3qhopqc8g3pdqURvXULVxrFVCwq9tw7NCtb6A T4UyPgGTnstx2HP0LuCNrwcZATiUfA9OlrrNlKOyAAtMIkuaJw/IVdc9I3j60Tp3q5Jq KE3gC+fzRoGYR27cyhohBN7y+Uu98vV+nE4980sylGO0yORAtCHmvm+tVxyeDQ3oM3Gc SI9SdADawzGsK9VwiyO+ob1tyoxAHi4E/Z1SJ/tiMlcN4b6aN6fHMw4UG0/dBrmW7lQM kiOQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:from:user-agent:in-reply-to:content-disposition :mime-version:references:message-id:subject:cc:to:date :dkim-signature:dkim-filter; bh=hpwjJ7hq21OP/wJBbT5aW5xo9ZncPVh8NR0iBeWbvKI=; b=h2l/0z0owQvOKx40bFHqGjdivBlT8A3TYiNmh9TBNcok3SezOyG2arcxhZU/RIcnNu u1nwhZUofaQOte+KVWWWb99rIKdFxgZkwj/Hvs0kHwlRGsdLsFzmlxAyAlhQ1A4v9XMZ p1d8KIpthC115oEHI42+1CQzNEfExT15jPY5g9l3iA0QWy0AicLBHrotAxllM7YCJHgd xuYVrCmER+ILbK5iEyD4Pk78IvQLtXN1AQ35/RpHutwc4sz8/dgV9CO3lIv/XxKf5wUb 7XUSOrChkiA7xP68nMDuoM4ZCFaaK/NXY6jJIhn/4hxWZ5JRm+JaG4PZQYEQjUuGuuV7 G8KA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@fieldses.org header.s=default header.b=c3ar0Iyj; spf=pass (google.com: domain of linux-nfs-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-nfs-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id y30si463749edi.44.2021.08.11.13.51.26; Wed, 11 Aug 2021 13:51:51 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-nfs-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@fieldses.org header.s=default header.b=c3ar0Iyj; spf=pass (google.com: domain of linux-nfs-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-nfs-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229589AbhHKUvp (ORCPT + 99 others); Wed, 11 Aug 2021 16:51:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34308 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231630AbhHKUvp (ORCPT ); Wed, 11 Aug 2021 16:51:45 -0400 Received: from fieldses.org (fieldses.org [IPv6:2600:3c00:e000:2f7::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5F822C061765 for ; Wed, 11 Aug 2021 13:51:21 -0700 (PDT) Received: by fieldses.org (Postfix, from userid 2815) id C1D9A6855; Wed, 11 Aug 2021 16:51:20 -0400 (EDT) DKIM-Filter: OpenDKIM Filter v2.11.0 fieldses.org C1D9A6855 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fieldses.org; s=default; t=1628715080; bh=hpwjJ7hq21OP/wJBbT5aW5xo9ZncPVh8NR0iBeWbvKI=; h=Date:To:Cc:Subject:References:In-Reply-To:From:From; b=c3ar0IyjZjYDbuAZUFwrj55qAD+yfGK99V2H13HQ/Bhauw3AGMmUZV61zQjcMoFlS IRAx/Yfzl82D09In34iOncVJ3AuVbsPKfPPVACpwd0k62N0+SevCQ44tmw0YL1Kc0p sUs2X7yr/gRHDGnB2INGlCXYHrkWA763zp4Tsv0Q= Date: Wed, 11 Aug 2021 16:51:20 -0400 To: Chuck Lever III Cc: Olga Kornievskaia , Bruce Fields , Timo Rothenpieler , Linux NFS Mailing List , Dai Ngo Subject: Re: Spurious instability with NFSoRDMA under moderate load Message-ID: <20210811205120.GA3783@fieldses.org> References: <64F9A492-44B9-4057-ABA5-C8202828A8DD@oracle.com> <1b8a24a9-5dba-3faf-8b0a-16e728a6051c@rothenpieler.org> <5DD80ADC-0A4B-4D95-8CF7-29096439DE9D@oracle.com> <0444ca5c-e8b6-1d80-d8a5-8469daa74970@rothenpieler.org> <3AF4F6CA-8B17-4AE9-82E2-21A2B9AA0774@oracle.com> <95DB2B47-F370-4787-96D9-07CE2F551AFD@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) From: bfields@fieldses.org (J. Bruce Fields) Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org On Wed, Aug 11, 2021 at 08:01:30PM +0000, Chuck Lever III wrote: > Perhaps instead of destroying the rpc_clnt, the server should > retain it and simply recycle the underlying transport data > structures. I think there was more trunking supported added to the rpc client since the callback code was written, so something like that might make sense now. --b.