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    writeback eats disk I/O

    I have a very slow disk. So I tried to increase dirty buffers /proc/sys/vm/dirty_background_bytes:0 /proc/sys/vm/dirty_background_ratio:50 /proc/sys/vm/dirty_bytes:0 /proc/sys/vm/dirty_expire_centisecs:60000 /proc/sys/vm/dirty_ratio:80 /proc/sys/vm/dirty_writeback_centisecs:500 DDing a 5 GB...
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