rsync - Oct 2015 - What is the default compression level for local synchronisation?

On 05/10/15 17:30, rsync-request at lists.samba.org
wrote:
>> Should we use --compress-level=0 for local synchronisation?  We
>> are using rsync 3.0.9 and 3.1.1.
> You should not use compression at all on local copies.  It is nothing
> but wasted CPU cycles.
...
- -- 
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- -*~
	Kevin Korb			Phone:    (407) 252-6853
	Systems Administrator		Internet:
	FutureQuest, Inc.		Kevin at FutureQuest.net  (work)
	Orlando, Florida		kmk at sanitarium.net (personal)
	Web page:			http://www.sanitarium.net/
	PGP public key available on web site.
~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,
- -*~

Thanks Kevin :-)

You answered the question perfectly but it is not the question I want
answering!

The question I want answering is "Does rsync need telling not to
compress when SOURCE and DEST are both local or does it automatically
choose a sane compression setting?"

On Mon 05 Oct 2015, Charles wrote:
> 
> The question I want answering is "Does rsync need telling not to
> compress when SOURCE and DEST are both local or does it automatically
> choose a sane compression setting?"
If you don't ask rsync to compress, it won't compress...
That's different from telling rsync not to compress.


Paul

You need to explicitly enable it. (-z)

-----Original Message-----
From: rsync [mailto:rsync-bounces at lists.samba.org] On Behalf Of Charles
Sent: Monday, October 05, 2015 7:32 AM
To: rsync at lists.samba.org
Subject: Re: What is the default compression level for local synchronisation?

On 05/10/15 17:30, rsync-request at lists.samba.org
wrote:
>> Should we use --compress-level=0 for local synchronisation?  We
>> are using rsync 3.0.9 and 3.1.1.
> You should not use compression at all on local copies.  It is nothing
> but wasted CPU cycles.
...
- -- 
~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,
- -*~
	Kevin Korb			Phone:    (407) 252-6853
	Systems Administrator		Internet:
	FutureQuest, Inc.		Kevin at FutureQuest.net  (work)
	Orlando, Florida		kmk at sanitarium.net (personal)
	Web page:			http://www.sanitarium.net/
	PGP public key available on web site.
~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,
- -*~

Thanks Kevin :-)

You answered the question perfectly but it is not the question I want
answering!

The question I want answering is "Does rsync need telling not to
compress when SOURCE and DEST are both local or does it automatically
choose a sane compression setting?"

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