From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from hoggar.fisica.ufpr.br (hoggar.fisica.ufpr.br [200.238.171.242]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6913474BF8; Mon, 6 May 2024 13:32:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=200.238.171.242 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715002354; cv=none; b=nmyXxTpRgCmWBT28PBfdv142BamutrxvjrmJGCjlXSxRpghpmrSM4QQEMPLZU9Gz4BqA9sSDyuV21npbibGxGKeyZX2KOSvL9Of0PZrgMLrJGEDuGseHTzifpVHjKHATK+P+9PULwSL6564NAXZq5roJ+iUvKNj9DDsQBVf+y8I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715002354; c=relaxed/simple; bh=5aPWLNBCt9nnOWvrjzXnoFe/wAdPKeU8CYYqXZeZPZU=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=dZYfuQga1hVO5DrHa2kSVYEKgzPT6JyNL9x+xcPEhpswQL9DiR1doeI8Z6yJHu1L3iP4UEkuCBCEiLYZHV3RdMdtSFHt6bDHlt2FYZ62/AyzVwts6nSfPmtiChOlLxzol1PMH1Ua72GyMP8VmmCQV1DBVWscfdCWUMnAjKSw29g= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=fisica.ufpr.br; spf=pass smtp.mailfrom=fisica.ufpr.br; dkim=pass (2048-bit key) header.d=fisica.ufpr.br header.i=@fisica.ufpr.br header.b=SaLNdsq2; arc=none smtp.client-ip=200.238.171.242 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=fisica.ufpr.br Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=fisica.ufpr.br Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=fisica.ufpr.br header.i=@fisica.ufpr.br header.b="SaLNdsq2" DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=fisica.ufpr.br; s=201705; t=1715002338; bh=5aPWLNBCt9nnOWvrjzXnoFe/wAdPKeU8CYYqXZeZPZU=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=SaLNdsq24DmAzv2rf5bj32oN1ZeRCqh1yXkv9KIcIMqs2niaZcdr0dew0kw9XyN6q OtXL/zdyIwYusDptM8IrNxe1jkWxiUu+V/NA5QJM7jSpKFcqfoS/dbOqjeUuckLFYb RI2RSjcD75VmEUsnageM0lxENHhqlD6QNoI/fgEPeUZwwhZ6KuepnrJDZJv9EF1sIg Bx6hFY/B0Pt8tX+0gJTOSGNpYSI2yGPIjjwmLbj5tRW7JhkcIhk9i8rkCtvatxsZq6 2lOMSL2cVsOB6d1So0Zi7NiEWJ2Ire54M7icBYWiTP9TdfZ+WJO8KMmgS/mOxwYL/G MOvA/1PMyIaew== Received: by hoggar.fisica.ufpr.br (Postfix, from userid 577) id BB29D11A7C87; Mon, 06 May 2024 10:32:18 -0300 (-03) Date: Mon, 6 May 2024 10:32:18 -0300 From: Carlos Carvalho To: Holger Kiehl Cc: linux-kernel , linux-raid , linux-block@vger.kernel.org, Jens Axboe , linux-ext4@vger.kernel.org, Theodore Ts'o Subject: Re: Massive slowdown in kernels as of 6.x Message-ID: References: <1ebabc15-51a8-59f3-c813-4e65e897a373@diagnostix.dwd.de> Precedence: bulk X-Mailing-List: linux-ext4@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <1ebabc15-51a8-59f3-c813-4e65e897a373@diagnostix.dwd.de> Holger Kiehl (Holger.Kiehl@dwd.de) wrote on Mon, May 06, 2024 at 08:31:37AM -03: > Mounted as follows: > > /dev/md0 on /u2 type ext4 (rw,nodev,noatime,commit=600,stripe=640) Sorry, missed that. You can try # mount -o remount,stripe=0 /dev/md0 ext4 is known to have a problem with parity raid with the symptoms you describe and the above remount works around it. raid10 doesn't have parity but is stripped so the workaround might work.