On Thu, Jan 2, 2014 at 7:33 PM, Daniel Lezcano <daniel.lezc...@linaro.org> wrote: > > Hi All, > > I noticed an issue on the IOs after resuming my laptop. > > My mailer thunderbird or the compilations are very slow, often blocked in > 'D' state. The 'top' shows 81% on wait. > > The processes stack are always in when blocked: > > [<c164f8ab>] balance_dirty_pages.isra.18+0x3f5/0x4b4 > [<c112a2ce>] balance_dirty_pages_ratelimited+0xde/0x100 > [<c1120d81>] generic_perform_write+0x141/0x1c0 > [<c1120e50>] generic_file_buffered_write+0x50/0x80 > [<c1122a4a>] __generic_file_aio_write+0x22a/0x490 > [<c1122d13>] generic_file_aio_write+0x63/0xd0 > [<c11f5162>] ext4_file_write+0xb2/0x100 > [<c117318a>] do_sync_write+0x6a/0xa0 > [<c1173dc5>] vfs_write+0xa5/0x1d0 > [<c1174277>] SyS_write+0x57/0xa0 > [<c1661b37>] syscall_call+0x7/0xb > > The kernel is 3.11.0-031100-generic based on ubuntu, I noticed this issue on > some previous version (since 3.5 AFAIR). > My laptop is a Lenovo X230, SSD 250GB (6Gb/s) and 16GB of RAM. > > Is it a known issue ?
We met write regressions before, see https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1242812 But it wasn't related with system sleep, and you may check if the patches land in your kernel. Thanks, -- Ming Lei -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/