On 11/19/2012 04:05 PM, Daniel Braniss wrote:
On 11/19/2012 02:48 PM, Daniel Braniss wrote:
try increasing the tag opening - see camcontrol(8)
danny
I tried camcontrol tags daX -N 32 (and a few different values) but cant
see any change in speeds.
(pass25:iscsi0:0:0:0): dev_openings 30
(pass25:iscsi0:0:0:0): dev_active 2
(pass25:iscsi0:0:0:0): devq_openings 30
(pass25:iscsi0:0:0:0): devq_queued 0
(pass25:iscsi0:0:0:0): held 0
(pass25:iscsi0:0:0:0): mintags 2
(pass25:iscsi0:0:0:0): maxtags 255
I think there is some magic to allow istgt to do tagging, but at the moment
can't find it, sorry.
Hm!
When increasing the tag openings to 8 (for example) I get extremley good
reads. I saturate the network (arount 550MB/s). But writes becomes even
more slow (around 1-2MB/s). So it seems the iscsi setup is capable of
hadling the speeds I want but for some reason writes are f*ed up.
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