From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp.domeneshop.no ([194.63.252.54]:38325 "EHLO smtp.domeneshop.no" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752677Ab3HCRhp (ORCPT ); Sat, 3 Aug 2013 13:37:45 -0400 Message-ID: <51FD3FDC.803@skagestad.org> Date: Sat, 03 Aug 2013 19:37:32 +0200 From: =?ISO-8859-1?Q?Torbj=F8rn?= MIME-Version: 1.0 To: Kai Krakow CC: linux-btrfs@vger.kernel.org Subject: Re: Is the checkpoint interval adjustable? References: <20130731200229.221580@gmx.com> <17rvca-hju.ln1@hurikhan.ath.cx> In-Reply-To: <17rvca-hju.ln1@hurikhan.ath.cx> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Sender: linux-btrfs-owner@vger.kernel.org List-ID: On 08/03/2013 07:28 PM, Kai Krakow wrote: > Mike Audia schrieb: > >> I believe 30 sec is the default for the checkpoint interval. Is this >> adjustable? -- >> To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in >> the body of a message to majordomo@vger.kernel.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html > Just curious: What would be the benefit of increasing the checkpoint > interval? Laptops typically spin down disks to save power. If btrfs forces a write every 30 second, you have to spin it back up. -- Torbjørn > > As far as I understood it would not decrease write load on the drives > because it will only update a few pointers and probably increase the > generation number... > > Greetings, > Kai