From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Fri, 11 Jun 2021 13:16:50 +0200 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by lore.white.stw.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1lrf9e-00058D-KD for lore@lore.pengutronix.de; Fri, 11 Jun 2021 13:16:50 +0200 Received: from bombadil.infradead.org ([2607:7c80:54:e::133]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lrf9d-0007Jo-MF for lore@pengutronix.de; Fri, 11 Jun 2021 13:16:50 +0200 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:From:In-Reply-To:MIME-Version: References:Message-ID:Subject:Cc:To:Date:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=owplk3wIbUmFWOQkDR+MIq+3S/3oYPYawCSxRwFGg3c=; b=VYoGD+7IuX95UbpYI2v6uwOlDA rhxwEp0r1WCV/54zmX3Ajbk/LUBQVZieyaZfHYnnoMwQXdL+tLQHqlVtERXGiSJXyGgOwrv2Q/0xT Ivx46/DwxlrplW3jLS6Tb5lXOrDZ2W6rS/ZOn0yDYNDAM4lwJVajcVJG+Q0QzWmeahDZqgE6xmlN9 QC2SQmYKzFucRRvczxTrCrbBqtcRsje+Y+kPMgY3gw1dbIhzc9eBO18tGBf/PT3ksS1KPn/QwZ9Y6 c/8EX+CFOVnhWY1Q2gGD0pNML+A5CXOrZ/4t1PjRWxC89o9Mqg8xTJNhGPfq+ljkxReVR09iNGVdR f0eI+CGA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1lrf8D-004xab-Bd; Fri, 11 Jun 2021 11:15:21 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1lrf6t-004x9Q-MB for barebox@lists.infradead.org; Fri, 11 Jun 2021 11:14:01 +0000 Received: from ptx.hi.pengutronix.de ([2001:67c:670:100:1d::c0]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lrf6r-0006eq-VF; Fri, 11 Jun 2021 13:13:57 +0200 Received: from sha by ptx.hi.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1lrf6r-00050B-Md; Fri, 11 Jun 2021 13:13:57 +0200 Date: Fri, 11 Jun 2021 13:13:57 +0200 To: Uwe =?iso-8859-15?Q?Kleine-K=F6nig?= Cc: barebox@lists.infradead.org Message-ID: <20210611111357.GG22904@pengutronix.de> References: <20210611071351.1445370-1-u.kleine-koenig@pengutronix.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210611071351.1445370-1-u.kleine-koenig@pengutronix.de> X-Sent-From: Pengutronix Hildesheim X-URL: http://www.pengutronix.de/ X-IRC: #ptxdist @freenode X-Accept-Language: de,en X-Accept-Content-Type: text/plain X-Uptime: 13:13:44 up 113 days, 14:37, 122 users, load average: 0.08, 0.17, 0.17 User-Agent: Mutt/1.10.1 (2018-07-13) From: Sascha Hauer X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210611_041359_767860_46A13E9E X-CRM114-Status: GOOD ( 20.32 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="iso-8859-15" Content-Transfer-Encoding: quoted-printable Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:e::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.ext.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-4.3 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: Re: [PATCH v2] fs: nfs: Start earlier to resend requests X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.ext.pengutronix.de) On Fri, Jun 11, 2021 at 09:13:51AM +0200, Uwe Kleine-K=F6nig wrote: > On a customer site we're experience a bit over 1% UDP packet loss. When > wiresharking an NFS transfer of a kernel image (with the goal to boot > via NFS) I saw 64 of 2555 RPC calls staying unanswered. With the current > timeout setting each of them introduces a delay of 2 seconds and the > whole transfer takes 137s. With the timeout reduced to 0.1s the transfer > time is not optimal (going down to approx 15 seconds) but at least it > becomes bearable. > = > To still cope with a slow network (in contrast to an unreliable as > pictured above) increase NFS_MAX_RESEND to keep NFS_TIMEOUT * > NFS_MAX_RESEND (which defines the overall timeout before aborting the > transfer) constant. > = > Signed-off-by: Uwe Kleine-K=F6nig > --- > fs/nfs.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) Applied, thanks Sascha -- = Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox