Messages in this thread | | | Date | Mon, 23 Oct 2006 17:32:21 +0200 | From | "Linux Portal" <> | Subject | Re: First benchmarks of the ext4 file system |
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On 10/23/06, Theodore Tso <tytso@mit.edu> wrote: > On Sun, Oct 22, 2006 at 01:57:36AM +0200, Linux Portal wrote: > > ext4 is 20 percent faster writer than ext3 or reiser4, probably thanks > > to extents and delayed allocation. On other tests it is either > > slightly faster or slightly slower. reiser4 comes as a nice surprise, > > winning few benchmarks. Both are very stable, no errors during > > testing. > > As Andrew has already pointed out, we don't have delayed allocation > merged in into the -mm tree yet.
OK.
> If you have the > time/energy/interest, a very useful thing that would very much help > the filesystem developers of all filesystems to do would be to > automated your tesitng enough that you can do these tests on a > frequent basis, both to track regressions caused by changes in other > parts of the kernel, as well we to see what happens as various bits of > functionality get added to the filesystem. This of course can become > an arbitrarily a huge amount of work, as you add more filesystems and > benchmarks, but it's the sort of thing which is incredibly useful > especially if the hardware is held constant across a large number of > filesystems, workloads/benchmarks, and kernel versions. >
I agree completely. That was my original idea, to prepare some setup for thorough testing, but I soon discovered that would really be a huge project, because of so many parameters involved.
So, at this time, I just satisfied my curiosity ;) with few simple tests of the early version of ext4. We'll see what the future brings (how much free time, in the first place ;)).
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