On 1/14/2013 10:44 AM, Steve Thompson wrote:
> On Mon, 14 Jan 2013, John Drescher wrote:
>
>> I would say this is a combination of filesystem performance ( remember
>> that when you backup there can be a lot of seeks that reduce
>> performance) and decompression performance. Decompression is less CPU
>> intensive than compression.
> Ah yes, you're right. A gunzip on some test files is indeed 4-5 times
> faster than a gzip on the same data. I never noticed that big a difference
> before.
>

If you have spooling disabled because you are writing backups to disk, 
you may see an improvement by explicitly enabling attribute spooling to 
prevent database writes from interfering with i/o from the client.


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