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[141.146.126.78]) by mx.google.com with ESMTPS id s23si18458352uao.186.2019.08.07.08.04.05 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 07 Aug 2019 08:04:05 -0700 (PDT) Received-SPF: pass (google.com: domain of daniel.m.jordan@oracle.com designates 141.146.126.78 as permitted sender) client-ip=141.146.126.78; Authentication-Results: mx.google.com; dkim=pass header.i=@oracle.com header.s=corp-2018-07-02 header.b=DYr3DDRG; spf=pass (google.com: domain of daniel.m.jordan@oracle.com designates 141.146.126.78 as permitted sender) smtp.mailfrom=daniel.m.jordan@oracle.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=oracle.com Received: from pps.filterd (aserp2120.oracle.com [127.0.0.1]) by aserp2120.oracle.com (8.16.0.27/8.16.0.27) with SMTP id x77EuC5T017488; Wed, 7 Aug 2019 15:03:53 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=subject : to : cc : references : from : message-id : date : mime-version : in-reply-to : content-type : content-transfer-encoding; s=corp-2018-07-02; bh=M4ZcIyz5b3ADuhDa/BJRjIXspgYDnEF++XCR91nu0ok=; b=DYr3DDRGNCgnl64b3tUdn5uDjK/9iI852BkmaeU2KevC5r2nujoNhLLH6/TgjlMd7KOd h9exYj/C4Yd/fheTdqK6XRRq3hxDJrK5J1egytlV4fr9MVhpY5+6yvjb0wcLZSqhSYzo F+O9zM1Xvunf9aaTakx9wWYTtSaTzd+EQvrX64OWAm+FXiSVsZTzKYItaQ8wfgsXo2JM ShUoKdum0LuQm+n9RCZY5RqdC0cwD6ZTSc5hZNgA8wLBPTuJt614awHLkplBF7/UUDiN DYBStMljMQnrQKToBKtHuq756EdERzZPHSp7msg7nT6YtduymR4fI0UPYPbyALYIa+gB TA== Received: from aserp3030.oracle.com (aserp3030.oracle.com [141.146.126.71]) by aserp2120.oracle.com with ESMTP id 2u527pvvwy-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 07 Aug 2019 15:03:53 +0000 Received: from pps.filterd (aserp3030.oracle.com [127.0.0.1]) by aserp3030.oracle.com (8.16.0.27/8.16.0.27) with SMTP id x77F2bFn167049; Wed, 7 Aug 2019 15:03:52 GMT Received: from userv0122.oracle.com (userv0122.oracle.com [156.151.31.75]) by aserp3030.oracle.com with ESMTP id 2u75bwh3e9-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 07 Aug 2019 15:03:52 +0000 Received: from abhmp0019.oracle.com (abhmp0019.oracle.com [141.146.116.25]) by userv0122.oracle.com (8.14.4/8.14.4) with ESMTP id x77F3oBR032173; Wed, 7 Aug 2019 15:03:50 GMT Received: from [192.168.1.218] (/73.60.114.248) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Wed, 07 Aug 2019 08:03:50 -0700 Subject: Re: [PATCH v2] mm/vmscan: shrink slab in node reclaim To: Yafang Shao Cc: Michal Hocko , Andrew Morton , Linux MM , Mel Gorman , Christoph Lameter , Yafang Shao References: <1565075940-23121-1-git-send-email-laoar.shao@gmail.com> <20190806073525.GC11812@dhcp22.suse.cz> <20190806152918.hs74nr7xa5rl7nrg@ca-dmjordan1.us.oracle.com> From: Daniel Jordan Message-ID: Date: Wed, 7 Aug 2019 11:03:49 -0400 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9341 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=1 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=686 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1906280000 definitions=main-1908070160 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9341 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=726 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1906280000 definitions=main-1908070159 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 8/6/19 9:00 PM, Yafang Shao wrote: > We used to enable it on production environment, but it caused some > latency spike(because of memory pressure), > so we have to disable it now. > BTW, do you plan to enable it for your workload ? No, I haven't experimented with it.