Another XFS Fan

[Steven Alligood]

I think it's pretty safe as long as you're not married to it.

Steve Morrey wrote:
> I'ld use RiserFS but I hear it's murder. :)
>
> Sorry couldn't resist.
>
> Sincerely,
> Steve
>
> On 3/13/08, Steven Alligood <steve at bluehost.com> wrote:
>   
>> Barry Roberts wrote:
>>     
>>> On Wed, 2008-03-12 at 21:15 -0600, Stuart Jansen wrote:
>>>
>>>       
>>>> Today I had a chance to compare ext3 and XFS overhead. Basically, I
>>>> created a new XFS filesystem and copied a bunch of data onto it. Then I
>>>> created an ext3 filesystem and copied everything from the XFS
>>>>         
>> filesystem
>>     
>>>> onto it. Most files were under 15M in size. I didn't compare
>>>>         
>> performance
>>     
>>>> because all I cared about was space efficiency. Count me as another XFS
>>>> fan.
>>>>
>>>>         
>>> Just FYI, I didn't really set out to do a test, but I accidentally found
>>> out that in certain cases (500 GB partitions with millions of 10-100k
>>> files in millions of subdirectories) ReiserFS is more space efficient
>>> than XFS.  I had to make the XFS partitions bigger, or they would fill
>>> up where the ReiserFS partition still had 10% free space.  I believe
>>> that was with notail on Reiser, but I'm not positive.
>>>
>>> I'm not saying ReiserFS isn't a dead end (I think it is, we're moving to
>>> XFS), but it might be the most space-efficient fs out there.
>>>
>>>       
>> ReiserFS will save a lot of space in it's default configuration, but
>> notail will give performance increases at the expense of that saved
>> space (reiser saves space by packing data into the tail end of a block,
>> but has a huge performance penalty to do it; notail turns off that
>> behavior).  Also note that reiser is pretty good at saving files, but
>> deleting them is terribly slow and performance intensive (which is why
>> you don't want to use it with mythtv :)
>>
>>
>>     

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