Tag Archives: ext4-dio-unwritten

Too many “ext4-dio-unwrit” processes in system

After adding pressure to application which will write tremendous data into ext4 file system, we see many “ext4-dio-unwrit” kernel threads in “top” screen. Many guys say this is a normal phenomenon, so I check the source code of ext4 in 2.6.32 linux kernel. The beginning of writing a file in… Read more »