Messages in this thread | | | Date | Fri, 27 Sep 2002 09:45:09 +0200 | From | Jens Axboe <> | Subject | Re: Warning - running *really* short on DMA buffers while doing file transfers |
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On Fri, Sep 27 2002, Matthew Jacob wrote: > > The issue here is not whether it's appropriate to oversaturate the > 'standard' SCSI drive- it isn't- I never suggested it was.
Ok so we agree. I think our oversaturate thresholds are different, though.
> I'd just suggest that it's asinine to criticise an HBA for running up to > reasonable limits when it's the non-toy OS that will do sensible I/O > scheduling. So point your gums elsewhere.
Well I don't think 253 is a reasonable limit, that was the whole point. How can sane io scheduling ever prevent starvation in that case? I can't point my gums elsewhere, this is where I'm seeing starvation.
-- Jens Axboe
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