On 07/15/2014 10:52 AM, Patrick J. LoPresti wrote:
> On Tue, Jul 15, 2014 at 10:44 AM, Paul Robert Marino
> <[log in to unmask]> wrote:
>> I have a question about your test did you unmount the stick between
>> runs of rsync. if not you may have already had all of the information
>> about the filesystem cached in memory instead of having to search the
>> FAT table for information. this could have a huge effect on the speed
>> of an update.
>
> Good suggestion, although I would recommend instead:
>
>      /sbin/sysctl -w vm.drop_caches=3
>
> This will flush the page cache completely and avoid the need to
> unmount+remount. It will also drop cached data for all mounted
> partitions (in this case, both the source and the destination of the
> rsync), which is usually what you want before performing any benchmark
> involving the file system.
>
>   - Pat
>

Who would this differ from the "sync" command?

Options="-rv --delete --modify-window=1 --times --inplace --copy-links "
rsync ${Options} $MyCDsSource/Linux  $MyCDsTarget/.; sync; sync

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