From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.0 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 742A2C433E0 for ; Mon, 6 Jul 2020 07:30:15 +0000 (UTC) Received: from lists.sourceforge.net (lists.sourceforge.net [216.105.38.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 0EB1D2075B; Mon, 6 Jul 2020 07:30:14 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=sourceforge.net header.i=@sourceforge.net header.b="N7wK9UL8"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=sf.net header.i=@sf.net header.b="WutyXEtv" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0EB1D2075B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linux-f2fs-devel-bounces@lists.sourceforge.net Received: from [127.0.0.1] (helo=sfs-ml-1.v29.lw.sourceforge.com) by sfs-ml-1.v29.lw.sourceforge.com with esmtp (Exim 4.90_1) (envelope-from ) id 1jsLZt-00032Q-UE; Mon, 06 Jul 2020 07:30:13 +0000 Received: from [172.30.20.202] (helo=mx.sourceforge.net) by sfs-ml-1.v29.lw.sourceforge.com with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jsLZt-00032F-3h for linux-f2fs-devel@lists.sourceforge.net; Mon, 06 Jul 2020 07:30:13 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sourceforge.net; s=x; h=Content-Transfer-Encoding:Content-Type:In-Reply-To: MIME-Version:Date:Message-ID:From:References:To:Subject:Sender:Reply-To:Cc: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=wMtdDzjllpvOmR4DGpyJ/7Zzx0BNChMOSCoV9po8IzY=; b=N7wK9UL8l5FD/9dqHofEJIxCtB UNWo59p0r6Wbs3/M4LC2DvEzSq10cPwP0AVZWNP+LFdvwLa/lpb3ocUTZqdta/u29KV2cxGMSTb6a JZaPODmSrZWRiOHRyNNzqyCUYdcRn8KIhsKqmFQuMV8hEqOZ8tjXlMVd6J0U7YmzZHyw=; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sf.net; s=x ; h=Content-Transfer-Encoding:Content-Type:In-Reply-To:MIME-Version:Date: Message-ID:From:References:To:Subject:Sender:Reply-To:Cc:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=wMtdDzjllpvOmR4DGpyJ/7Zzx0BNChMOSCoV9po8IzY=; b=WutyXEtvtZhHFWKIf92wkIBLqT 7BmLYoRXnK2JlaCXy7HQSaP2xEas3zTO2r4Z7Yk/qSLM4YUwiD9O1FzOhizbXBDGH4Nh5Ch6DUy9V F+6xbuVZZRG7vRQ2KjVIvIA0iux8W2u2h27Jh4wUHJCNzuNBazsI0J57/bNizIisiKDQ=; Received: from szxga07-in.huawei.com ([45.249.212.35] helo=huawei.com) by sfi-mx-1.v28.lw.sourceforge.com with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.92.2) id 1jsLZo-00EkvF-MW for linux-f2fs-devel@lists.sourceforge.net; Mon, 06 Jul 2020 07:30:13 +0000 Received: from DGGEMS414-HUB.china.huawei.com (unknown [172.30.72.59]) by Forcepoint Email with ESMTP id 833A7E33D0076DB66370; Mon, 6 Jul 2020 15:29:45 +0800 (CST) Received: from [10.134.22.195] (10.134.22.195) by smtp.huawei.com (10.3.19.214) with Microsoft SMTP Server (TLS) id 14.3.487.0; Mon, 6 Jul 2020 15:29:40 +0800 To: lampahome , References: From: Chao Yu Message-ID: <0ea89e42-8ea7-5557-8717-26d2e6965104@huawei.com> Date: Mon, 6 Jul 2020 15:29:40 +0800 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US X-Originating-IP: [10.134.22.195] X-CFilter-Loop: Reflected X-Headers-End: 1jsLZo-00EkvF-MW Subject: Re: [f2fs-dev] Can I know if now is gc-ing or checkpointing? X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net On 2020/7/6 15:10, lampahome wrote: > I tried to test performance with f2fs and create many fio to test it. > > I found when fio reach a number(e.g. 25 fio), the performance degrade > not in proportional with small number > > EX: > 5 fio: bandwidth 300MB/s > 10 fio: bandwidth 150MB/s > 25 fio: bandwidth 30MB/s What's your buffer size for each flush? > > I wonder many trigger the gc or checkpoint, may I know if it running > foreground or background? cat /sys/kernel/debug/f2fs/status |grep CP and cat /sys/kernel/debug/f2fs/status |grep GC > > > _______________________________________________ > Linux-f2fs-devel mailing list > Linux-f2fs-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel > . > _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel