Re: WrMeta
Re: WrMeta
- Subject: Re: WrMeta
- From: Chris Suter <email@hidden>
- Date: Mon, 09 Jul 2012 12:03:15 +1000
Hi,
On Sun, Jul 8, 2012 at 6:14 AM, Tilghman Lesher
<email@hidden> wrote:
On Fri, Jul 6, 2012 at 5:10 PM, Dave Keck <
email@hidden> wrote:
>> Since this should be asynchronous, I'd be surprised if this is causing a significant performance degradation...
>
> Thanks Shantonu! -- it was indeed updating the access time.
>
> Is there a supported way to prevent my process from updating the
> access time? My initial benchmarks show a 28% performance increase in
> processing 4000 photos (82 seconds before, 64 seconds after).
http://oroyphoto.com/2010/11/12/mac-os-x-noatime-settings-for-10-6/
According to the Kernel sources, there’s something called “rapid aging” that might be relevant. Documentation is sparse so I don’t know its intended use, but it looks like something you can set per-process that will prevent access times from being set.
Kind regards,
Chris
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| References: | |
| | >WrMeta (From: Dave Keck <email@hidden>) |
| | >Re: WrMeta (From: Shantonu Sen <email@hidden>) |
| | >Re: WrMeta (From: Dave Keck <email@hidden>) |
| | >Re: WrMeta (From: Tilghman Lesher <email@hidden>) |