From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Authentication-Results: lists.ozlabs.org; spf=none (mailfrom) smtp.mailfrom=linux.vnet.ibm.com (client-ip=148.163.158.5; helo=mx0a-001b2d01.pphosted.com; envelope-from=stewart@linux.vnet.ibm.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.vnet.ibm.com Received: from mx0a-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 404hKx3XPdzF1kC for ; Tue, 20 Mar 2018 03:27:16 +1100 (AEDT) Received: from pps.filterd (m0098414.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w2JGPXK4012070 for ; Mon, 19 Mar 2018 12:27:14 -0400 Received: from e16.ny.us.ibm.com (e16.ny.us.ibm.com [129.33.205.206]) by mx0b-001b2d01.pphosted.com with ESMTP id 2gtern65hg-1 (version=TLSv1.2 cipher=AES256-SHA256 bits=256 verify=NOT) for ; Mon, 19 Mar 2018 12:27:13 -0400 Received: from localhost by e16.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 19 Mar 2018 12:27:13 -0400 Received: from b01cxnp22035.gho.pok.ibm.com (9.57.198.25) by e16.ny.us.ibm.com (146.89.104.203) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Mon, 19 Mar 2018 12:27:10 -0400 Received: from b01ledav002.gho.pok.ibm.com (b01ledav002.gho.pok.ibm.com [9.57.199.107]) by b01cxnp22035.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w2JGRAVo50462808; Mon, 19 Mar 2018 16:27:10 GMT Received: from b01ledav002.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 0F02412403F; Mon, 19 Mar 2018 13:29:20 -0400 (EDT) Received: from birb.localdomain (unknown [9.85.174.149]) by b01ledav002.gho.pok.ibm.com (Postfix) with ESMTP id CBF6A124035; Mon, 19 Mar 2018 13:29:19 -0400 (EDT) Received: by birb.localdomain (Postfix, from userid 1000) id 90C814EC62A; Mon, 19 Mar 2018 09:27:07 -0700 (PDT) From: Stewart Smith To: Emily Shaffer , Tom Joseph , Jeremy Kerr Cc: Vernon Mauery , OpenBMC Maillist , Bradley W Bishop Subject: Re: IPMI SOL performance In-Reply-To: References: Date: Mon, 19 Mar 2018 09:27:07 -0700 MIME-Version: 1.0 Content-Type: text/plain X-TM-AS-GCONF: 00 x-cbid: 18031916-0024-0000-0000-00000338F6CE X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00008703; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000254; SDB=6.01005384; UDB=6.00511826; IPR=6.00784667; MB=3.00020127; MTD=3.00000008; XFM=3.00000015; UTC=2018-03-19 16:27:11 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18031916-0025-0000-0000-00004760A987 Message-Id: <87y3iokp44.fsf@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2018-03-19_09:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1709140000 definitions=main-1803190184 X-BeenThere: openbmc@lists.ozlabs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: Development list for OpenBMC List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 19 Mar 2018 16:27:18 -0000 Emily Shaffer writes: >> Is it a possibility to just increase the petitboot timeout? Do you have an > idea of how much we are missing it by? Worst case (may be different currently due to improvements in ipmi stack) was about 10-15 minutes. We have different issues on the SSH console though, we can end up dropping chunks of console output under load (BMC CPU load or high console usage). I think Jeremy can relive the trauma of heading into the TTY layer, but I wonder if the solution here has something to do with having a end-to-end flow control story. -- Stewart Smith OPAL Architect, IBM.