From: Jens Axboe <axboe@kernel.dk>
To: "Elliott, Robert (Server Storage)" <Elliott@hp.com>,
"fio@vger.kernel.org" <fio@vger.kernel.org>
Cc: "dgilbert@interlog.com" <dgilbert@interlog.com>
Subject: Re: lots of closes causing lots of invalidates while running
Date: Fri, 04 Jul 2014 15:31:16 -0600 [thread overview]
Message-ID: <53B71D24.606@kernel.dk> (raw)
In-Reply-To: <94D0CD8314A33A4D9D801C0FE68B402958B86823@G9W0745.americas.hpqcorp.net>
On 2014-07-04 15:26, Elliott, Robert (Server Storage) wrote:
>
>
>> -----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
>>
>> 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.
>>
>
> My original test was with 128 MiB.
> Same result with 1 GiB.
> Goes away with 2 GiB and 4 GiB.
The behavior should be the same, just a change in frequency.
--
Jens Axboe
prev parent reply other threads:[~2014-07-04 21:31 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-04 0:20 lots of closes causing lots of invalidates while running Elliott, Robert (Server Storage)
2014-07-04 21:19 ` Jens Axboe
2014-07-04 21:26 ` Elliott, Robert (Server Storage)
2014-07-04 21:31 ` Jens Axboe [this message]
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