quoted

quoted

There _may_ be issues with changing depth on the fly. So if you could
just test without fiddling with changing depths that would be great.

Ok. No changes in /proc using_tcq after boot, assuming it's enabled
automatically (checked that in kernel config0, it works perfectly fine.

Thanks for verifying that! Jan, you appeared to have problems even with
tcq-per-default enabled and not touching the depth while running io, is
that correct?

Okay tested it for roughly a day, doing some heavy I/O. Seems to work fine. 
Didn't dare to change setting though. Had yet no time to test it with an 
older kernel.

ds666:/nfshome/jdittmer# cat /proc/ide/hda/settings | grep -i tcq
using_tcq               1               0               32              rw

jan