Re: [PLUG] How to Find Most Used Files

[Doug Stewart <zamoose@gmail.com>]

Have you looked into sar/sysstat?

On Sun, Nov 20, 2011 at 3:20 PM, Rich Freeman <r-plug@thefreemanclan.net> wrote:
> On Sun, Nov 20, 2011 at 2:53 PM, brent timothy saner
> <brent.saner@gmail.com> wrote:
>> 3. THIS IS IMPORTANT: you MUST have the disk mounted with the "atime"
>> option, otherwise you'll have to rely only on modified time in the find
>> command (mtime). i believe noatime is now the default, which means
>> atimes aren't updated.
>
> There is a reason for that - updating atimes results in a LOT of extra
> disk writes and a performance hit.  It potentially increases flash
> wear as well if you have an SSD.  No real way to get around that with
> this type of solution.
>
> I could envision a program aggregating from lsof or something like
> that, or using a file-alteration-monitor or direct accounting calls to
> the kernel.  That wouldn't require quite as many updates since you
> could flush the log once an hour or whatever.  I have no idea if such
> a thing already exists though.
>
> Rich
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-- 
-Doug
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