-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Sunday, 2013-10-27 at 08:55 -0400, Greg Freemyer wrote:
"Carlos E. R." <> wrote:
...
Filesystem formatting are all defaults, no adjustments of any kind.
Xfs has a speculative preallocation feature that is horrible for your workload in this test.
If this workload is something you really care about then you should be willing to tune your mount options.
Xfs has a bunch of them: <https://www.kernel.org/doc/Documentation/filesystems/xfs.txt>
In particular allocsize=4kb will disable preallocate and only allocate disk pages if you have data to put into it.
Note that xfs reclaims unused preallocated space, but it takes time (days/weeks) and your test doesn't allow for that. Thus your benchmark is only useful if it is a workload you actually care about and not just a test.
Well, it is something to consider. I do have a news spool, which now is on reiserfs, and will stay that way while possible. If it stops being supported, it will then go to XFS, I guess. Years ago, I timed kernel build on different filesystems, and it was way faster on reiserfs. Thus my /usr/src7 is also reiserfs. IMHO, modern filesystems should adjust automatically to the load, without any adjustements from the user. - -- Cheers, Carlos E. R. (from 12.3 x86_64 "Dartmouth" at Telcontar) -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (GNU/Linux) iEYEARECAAYFAlJtZ88ACgkQtTMYHG2NR9UXrQCfWyN2O7Rp7XHtusFtMSmrsfB0 EdcAoIyGr5EBIUC0cAdX3KtEGj63wiDO =+nPo -----END PGP SIGNATURE----- -- To unsubscribe, e-mail: opensuse-factory+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-factory+owner@opensuse.org