FreeBSD 5.3 I/O Performance / Linux 2.6.10 | Continued Discussion

Petri Helenius pete at
Tue Jan 25 15:39:47 PST 2005

Matthias Buelow wrote:

> Petri Helenius wrote:
>> Are you sure you aren't comparing filesystems with different mount 
>> options? Async comes to mind first.
> a) ext3 and xfs are logging filesystems, so the problem with 
> asynchronous metadata updates possibly corrupting the filesystem on a 
> crash doesn't arise.

No, they have a different, though unrelated issues. I didn't notice 
which filesystem and which options were used for the benchmarks, that's 
why I was asking about it.

> b) asynchronous metadata updates wouldn't have any performance benefit 
> on a dd if=/dev/zero of=tstfile.

I was not aware that the tests were this simple.

> c) please cut down your quotes, and write your answers below or 
> between the quoted text, instead of the outlook text-above-fullquote 
> style. thanks.

I usually do, however in this case it was intentional.


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