[ale] rsync comparisons

[Robert Coggins]

I am using -a --delete and --eclude.  Pretty Basic.

To be honest I think my problem is with the Source.  It even does an ls
very slow.  There are probably more than 1 million files in this 20GB.

On 04/01/2010 02:49 PM, Björn Gustafsson wrote:
> Which switches are you using now?  It doesn't sound like adding the
> ones discussed so far will help.
> 
> On Thu, Apr 1, 2010 at 11:41 AM, Robert Coggins <ale at cogginsnet.com> wrote:
>> Well, what I a seeing is the syncing of roughly 20GB taking over an hour
>> for just a few megs of differences.  It stays in the "building file
>> list..." for almost all of this time.  I am trying to find a way to
>> speed that up.
>>
>> Rob
>>
>> On 04/01/2010 11:37 AM, scott wrote:
>>> rsync compares on a file level BUT it compares timedate stamps/sizes
>>> in "quick mode" (which is default).  but if you want it to compare
>>> file to file, use "-c or --checksum" option.  Now this puts a heavier
>>> load on both systems, since it does a MD5 checksum on every file that
>>> has the same timedate stamp/size on both sides of the sync.  Now if
>>> you want to force the copy of the whole file instead of the changed
>>> blocks, use the --whole-file option with it.
>>>
>>> I would use this ( -c & --whole-file) sparingly.  It is going to slow
>>> down the copies, put heavier loads on both ends and transfer more data
>>> (control data) back and forth.  I dont know your situation so I cant
>>> say to use it or or not.
>>>
>>> scott
>>>
>>>
>>> On Thu, Apr 1, 2010 at 11:00 AM, Robert Coggins <ale at cogginsnet.com> wrote:
>>>> Is there a way to do file level comparisons and not block level
>>>> comparisons using rsync?
>>>>
>>>> Rob
>