On Fri, Oct 28, 2011 at 06:58:22AM +0800, Wu Fengguang wrote: > Hi, > > FYI, I find bdi dirty threshold madness in the newly released v3.1 > according to the gray lines in the attached graphs, which are for > these test cases: > > 3G-UKEY-HDD/ext4-1dd-4k-8p-2948M-20:10-3.1.0-vanilla+ > 3G-UKEY-HDD/xfs-10dd-4k-8p-2948M-20:10-3.1.0-vanilla+ > 3G-UKEY-HDD/xfs-1dd-4k-8p-2948M-20:10-3.1.0-vanilla+ > > It's basically doing concurrent dd's to a USB key and a hard disk. > > Don't know what's going wrong, but at least should be bisectable.. It seems to depend on kernel builds: the problem disappears in the newly compiled kernels. This makes it pretty hard to catch the root cause... Thanks, Fengguang -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
