From owner-freebsd-stable@freebsd.org Fri Sep 29 05:31:24 2017 Return-Path: Delivered-To: freebsd-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 2546DE23961 for ; Fri, 29 Sep 2017 05:31:24 +0000 (UTC) (envelope-from sepherosa@gmail.com) Received: from mail-qk0-x232.google.com (mail-qk0-x232.google.com [IPv6:2607:f8b0:400d:c09::232]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id C87357E5B5; Fri, 29 Sep 2017 05:31:23 +0000 (UTC) (envelope-from sepherosa@gmail.com) Received: by mail-qk0-x232.google.com with SMTP id z143so225001qkb.3; Thu, 28 Sep 2017 22:31:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:sender:in-reply-to:references:from:date:message-id :subject:to:cc; bh=VuiU9ok61Tetur9pLazEkKPTj6VkROqVXFQUSps067I=; b=rolGv45S5TDlJx9t+TJbW9CNKcXmuf6JG2B13M1NNt0XXqKfqGI2fbccbGLoxqReN1 H3AXJBmsdSD6wqoTMDyU7ZRX4ZZpuoq4K2xlKogYs9bm/RdgAmb3UKRPR/9oAS2sNbvE HDNOXwcQTPvNteUnM9Oxbuacq73gvOm5STTJRXTM0abO2+gke3xZC8nZyeR8IM6n7SP2 +LwVVWQifb5CIpcugr8RBCuvsPjCTlttHCg7LDgz0Y4SNrsGxih0L80tC2Z6cKHf1iju Y3qjKK1Qqh/25Zlw8VH0QnGjOD9aJ88eSFGfRSd7rdkbuNgjkYFAmIp0KwsO4w/JgVrt CMJQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:sender:in-reply-to:references:from :date:message-id:subject:to:cc; bh=VuiU9ok61Tetur9pLazEkKPTj6VkROqVXFQUSps067I=; b=mC657sLOdRW49Hb06SmwvyTCIIDP5jSI3bZemP6mV/ufik2nfMMiGjUbNEzI9YAg1L LAM49W/MGAVqFHp8UBGD91vfGayOZNc0rlL1zj9w+Iu3Exe+os/eF02z4JGRTqMjiEkZ ALQO3PpcN8bn8eLQCrOZljndLM6dyQcE+5I4shioVMTZVdY1Ga+S+oPAq3qZUgmdBgPz k2wrT8I7I0r8ONDA+jyJ+pB53WlNXvCmWV44xC1DN88Iai1d+PBMU6ZB7t3ApgT8WJme sgirqgKixzMEniYMpdCZnYeCHmw9zxxtx+SJ+t8bKbDE1zqw10T6lFH/tT+wtu/ghUoh hTQQ== X-Gm-Message-State: AMCzsaXCGCWTLzA5l5gwauog8yOZVPI1gDX0j/jWyNAiMOQLdq3BX//C WBnW0K4AhYRONA/syQcnzft7TdgX8ymWP2LGIw== X-Google-Smtp-Source: AOwi7QCOpb7mGIMcy77trv2mI0+LJ9OaPh9Ko5hHjwolmZJ5+vzqAkvhqk5g006IadC9t4ch5clrbyljgRnB/xE7jC4= X-Received: by 10.55.101.77 with SMTP id z74mr1651426qkb.52.1506663082826; Thu, 28 Sep 2017 22:31:22 -0700 (PDT) MIME-Version: 1.0 Sender: sepherosa@gmail.com Received: by 10.140.21.20 with HTTP; Thu, 28 Sep 2017 22:31:22 -0700 (PDT) In-Reply-To: <20170929143659.7fe1a4f6@akips.com> References: <20170906193309.796c79ed@akips.com> <3f96c7d0-4fbd-26cb-5c84-8868d12eb427@ingresso.co.uk> <14997bba-aac2-947b-9b78-04af41ea29b0@freebsd.org> <20170907150711.025e4e41@akips.com> <20170908010400.0fb81bc4@akips.com> <20170929143659.7fe1a4f6@akips.com> From: Sepherosa Ziehau Date: Fri, 29 Sep 2017 13:31:22 +0800 X-Google-Sender-Auth: tktHpb9TmLRiPx5Xbc5VnGn88eY Message-ID: Subject: Re: 11.1 running on HyperV hn interface hangs To: Paul Koch Cc: Julian Elischer , freebsd-stable@freebsd.org, Hongjiang Zhang Content-Type: text/plain; charset="UTF-8" X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 29 Sep 2017 05:31:24 -0000 On Fri, Sep 29, 2017 at 12:36 PM, Paul Koch wrote: > On Thu, 14 Sep 2017 09:54:56 +0800 > Sepherosa Ziehau wrote: > >> If you have any updates on this, please let me know. There is still >> time for 10.4. > > We are still playing around with this in the lab... > > Running similar setup as the customer > Microsoft Windows Server 2012 R2 Datacentre (6.3.9600) Revision 16384 > Hyper-V 2012 > > Two VM guests > - 11.0-RELEASE > - 11.1-p1 > > We can not get the Hyper-V hn interface to lock up like the customer can > though. > > We can get the VMs to hang/stall regularly if the guests run ntpd - approx > every 15 mins, but no real obvious pattern to it. Disabling ntpd fixes it. Hmm, by ntpd I think you mean ntp client? You will have to disable timesync if you run ntp client: sysctl hw.hvtimesync.sample_thresh=-1 sysctl hw.hvtimesync.ignore_sync=1 They interfere w/ each other. Or do you mean the network hanging triggered by "RXBUF ack failed"? Thanks, sephe -- Tomorrow Will Never Die