Thread (27 messages) 27 messages, 6 authors, 2002-09-27

Re: Warning - running *really* short on DMA buffers while doing file transfers

From: Jens Axboe <hidden>
Date: 2002-09-27 07:19:38
Also in: lkml

On Fri, Sep 27 2002, Matthew Jacob wrote:
quoted
So I think the 'more tags the better!' belief is very much bogus, at
least for the common case.
Well, that's one theory.
Numbers talk, theory spinning walks

Both Andrew and I did latency numbers for even small depths of tagging,
and the result was not pretty. Sure this is just your regular plaino
SCSI drives, however that's also what I care most about. People with
big-ass hardware tend to find a way to tweak them as well, I'd like the
typical systems to run fine out of the box though.

-- 
Jens Axboe
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