Danny Braniss wrote:
things are looking much better 2day, got tag queuing to work, and now it's
much faster.
Q: how can the driver tell the cam to enable queing (ie: camcontrol tag 0:0:0
-Nn), and
case XPT_PATH_INQ:
cpi->hba_inquiry = PI_TAG_ABLE
Q: is there a rule of thumb as to how many tag'ed?
When you call cam_sim_alloc(), there are arguments for how many
concurrent tagged and untagged transactions the driver can handle.
I don't know how tags work in iscsi, so I can't say what a good
number is here. Note that tag management is left completely up
to the driver; CAM will tell you whether or not to use a tag for
a particular CCB, but it's up to the driver to assign and track
the tag number.
thanks,
danny
PS: soon there will be a new beta, any news with the old one?
Sorry, I haven't had much time to review the old one yet. Sounds like
you're making really good progress, though.
Scott
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