From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: "Elliott, Robert (Server Storage)" Subject: RE: lots of closes causing lots of invalidates while running Date: Fri, 4 Jul 2014 21:26:08 +0000 Message-ID: <94D0CD8314A33A4D9D801C0FE68B402958B86823@G9W0745.americas.hpqcorp.net> References: <94D0CD8314A33A4D9D801C0FE68B402958B83482@G9W0745.americas.hpqcorp.net> <53B71A50.603@kernel.dk> In-Reply-To: <53B71A50.603@kernel.dk> Content-Language: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 To: Jens Axboe , "fio@vger.kernel.org" Cc: "dgilbert@interlog.com" List-ID: > -----Original Message----- > From: Jens Axboe [mailto:axboe@kernel.dk] > Sent: Friday, 04 July, 2014 4:19 PM > To: Elliott, Robert (Server Storage); fio@vger.kernel.org > Cc: dgilbert@interlog.com > Subject: Re: lots of closes causing lots of invalidates while running >=20 > How big are the devices? Should only open/close once per reading it, but > if it's scsi_debug and they are small, then that might explain it. If > that's not the case, it's definitely a but and we'll need to look into it= . >=20 My original test was with 128 MiB. =20 Same result with 1 GiB. Goes away with 2 GiB and 4 GiB.