Hi all,
I've replaced my notebook HDD with an SSHD hybrid disk (Seagate ST1000LM).
contrary to my experience with other similar machines, the disk
performance are really poor.
I suspect that it depends on btrfs detecting it as an SSD disk
(according to this dmesg message):
BTRFS: detected SSD devices, enabling SSD mode
is this the way it is supposed to be for hybrid disks?
is there a way to disable SSD mode (and, is it something I should try?)
Hi,
You can try nossd mount option (mount DEV MNT -o nossd), which will
disable ssd related optimization.
But according to my experience, even enable ssd mode on HDD, performance
shouldn't drop too much, and sometimes, especially random write
performance will even improve hugely.(but at cost of more fragments).
Thanks,
Qu
thanks,
Federico
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