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=-0.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 509C6C433E0 for ; Sat, 6 Jun 2020 16:17:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1F2D920772 for ; Sat, 6 Jun 2020 16:17:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="AO7PDw20" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728106AbgFFQRE (ORCPT ); Sat, 6 Jun 2020 12:17:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36964 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726968AbgFFQRD (ORCPT ); Sat, 6 Jun 2020 12:17:03 -0400 Received: from mail-oo1-xc30.google.com (mail-oo1-xc30.google.com [IPv6:2607:f8b0:4864:20::c30]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BAC08C03E96A for ; Sat, 6 Jun 2020 09:17:03 -0700 (PDT) Received: by mail-oo1-xc30.google.com with SMTP id v26so1606892oof.7 for ; Sat, 06 Jun 2020 09:17:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=dTdfmwoUywmWvPOB4eOqMK1Ot/GbVityD72WKBuM+Lg=; b=AO7PDw20LeYCdpIJitwlLb/iG9YA3FZFoxpy2eT2BfUjZ7D+Ut5nLSC+DN2NaVip7B S5G8rOo/2J7BEkXu8AAwzoGedg6LuC1k8hxzF84rvtnLeShHX9UZFEDjwNpib81sdhRt NW9P5oprPz01ED+tMb/xXk1JKG7g3toy152Pmy2Ho/JmqQt05zwHE+r9ecxDAwtX4u6W 4YdeiyMEIoP6ZdJawTHd4VxXSlbIO4+0Z4CIulNU7JWG2z3umUp2LNRDCrtOk0H3iTw3 CAelgN3eHXI9K9QljttzP2VtADp7U8yy9z/kQA/92OgNSxOp2VL8ECKIkZdm64Zhq+SW +leA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=dTdfmwoUywmWvPOB4eOqMK1Ot/GbVityD72WKBuM+Lg=; b=TXJMl/N9s7YIRZv9zqk6Y4ZUKPQxXsq+FYbrd8J1ra4hF8YH1fELbU6YnoajZ1U5oP TPvJsO4JElaMG610+PZue3PTypnxGv8lDaaiHGjSozWqzQvHi9RZDSWWWz1W8XdU2MWn pd7ZIPMlWwhCK2wc3AQpGTipVClWjXdkBw9gAgW6xhDMxthaZ6p/dv8aptKbX0tGgdSJ hWDSxDSraTpTTDxGoOV32RE7zwLSyT9Nt60soLiuSgJUF5bMMOLs71iYF7wEOsnu2Dde A+orhF3kxdgTMbQnij2dn2HT3NTUh+DIFjcFL4exmr9NelxfWtVXfjvoJjIrtcpVSZKT XSNQ== X-Gm-Message-State: AOAM533ckbNB/adaRyR+nzJ840MXn5OEfqix4lCXusbNwh0kc5cAmgDW AV0Y7AGw2mGPX+fnbmmTvYIFYMF3/LJn7oKxCduhcUNJci0= X-Google-Smtp-Source: ABdhPJxUj6eHlBkfxMNWUUCRLowMAtS7hRLEbGam3HpGIZcGjeGaOKq0foj7WCwUw4MZjOArKfFE4Ka4UYS089Chovc= X-Received: by 2002:a4a:a20b:: with SMTP id m11mr11858887ool.20.1591460222654; Sat, 06 Jun 2020 09:17:02 -0700 (PDT) MIME-Version: 1.0 References: <2ae5353b-461b-6a87-227c-f13b0c2ccfe2@suse.com> <62395bb.90271dad.172426a118f@lechevalier.se> In-Reply-To: <62395bb.90271dad.172426a118f@lechevalier.se> From: Jorge Bastos Date: Sat, 6 Jun 2020 17:16:53 +0100 Message-ID: Subject: Re: 5.6, slow send/receive, < 1MB/s To: A L Cc: Btrfs BTRFS Content-Type: text/plain; charset="UTF-8" Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org Hi there, Happy to report my issue is not related to btrfs, since I remembered reading this post and noticed performance issues after upgrading to kernel 5.6 wrongly assumed it was related, my issue is caused by pv, for some reason sometimes it starts using a lot of CPU and the send/receive barely crawls along, but it's not always, i.e.same send/receive can go at 250MB/s one time and the next time it will transfer at less than 10Mb/s, anyway sorry to waste everyone's time. Regards, Jorge Bastos