Valerie Clement wrote: > Hi all, > > Since a couple of weeks, I did batches of tests to have some performance > numbers for the new ext4 features like uninit_groups, flex_bg or > journal_checksum on a 5TB filesystem. > I tried to test allmost all combinations of mkfs and mount options, but > I put only a subset of them in the result tables, the most significant > for me. > > I had started to do these tests on a kernel 2.6.26-rc1, but I'd got several > hangs and crashes occuring randomly outside ext4, sometimes in the slab > code or in the scsi driver eg., and which were not reproductible. > Since 2.6.26-rc2, no crash or hang occur with ext4 on my system. > > The first results and the test description are available here: > http://www.bullopensource.org/ext4/20080530/ffsb-write-2.6.26-rc2.html > http://www.bullopensource.org/ext4/20080530/ffsb-readwrite-2.6.26-rc2.html To be fair in your comparisons with xfs, you should probably either turn barriers off for xfs, or on for ext[34], just FWIW. -Eric -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
