On 07/15/2014 11:02 AM, ToddAndMargo wrote:
> 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?

"who" should have been "how"

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


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