Hello. In my board, i ran the iozone with multi-thread option. My board has 8 cores and i enabled CONFIG_SMP. the iozone command as follow: iozone -l 20 -u 20 -r 64k -s 5m -o -F /user/f1 /user/f2 /user/f3 /user/f4 /user/f5 /user/f6 /user/f7 /user/f8 /user/f9 /user/f10 /user/f11 /user/f12 /user/f13 /user/f14 /user/f15 /user/f16 /user/f17 /user/f18 /user/f19 /user/f20
mount info as follow cat /proc/mounts /dev/sda3 /user ext4 rw,noatime,nodiratime,errors=panic,barrier=1,data=ordered 0 0 I got a message as below every time i ran iozone test. [ 4876.293124] [<ffffffff80272d18>] show_stack+0x68/0x80 [ 4876.309411] [<ffffffff802bde4c>] notifier_call_chain+0x5c/0xa8 [ 4876.315245] [<ffffffff802be524>] __atomic_notifier_call_chain+0x3c/0x58 [ 4876.321860] [<ffffffff802be588>] notify_die+0x38/0x48 [ 4876.326913] [<ffffffff80272548>] do_trap_or_bp+0x48/0x1a8 [ 4876.332312] [<ffffffff8026cfe4>] resume_userspace_check+0x0/0x10 [ 4876.338323] [<ffffffff80462994>] jbd2_journal_put_journal_head+0xcc/0x250 [ 4876.345111] [<ffffffff804603b4>] __jbd2_journal_remove_checkpoint+0x54/0x130 [ 4876.352160] [<ffffffff8045e630>] jbd2_journal_commit_transaction+0x1318/0x1ad0 [ 4876.359383] [<ffffffff80463f4c>] kjournald2+0x114/0x450 [ 4876.364611] [<ffffffff802b8160>] kthread+0xb8/0xc0 [ 4876.369402] [<ffffffff8026d060>] ret_from_kernel_thread+0x10/0x18 When i ran without multi-thread option, the problem was not ocurred. Thanks.
