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

Jens Axboe
2002-09-27T06:31:22Z

On Thu, Sep 26 2002, Matthew Jacob wrote:
>
> > 2.4 layer is most horrible there, 2.5 at least gets rid of the old
> > scsi_dma crap. That said, 253 default depth is a bit over the top, no?
>
> Why? Something like a large Hitachi 9*** storage system can take ~1000
> tags w/o wincing.

Yeah, I bet that most of the devices attached to aic7xxx controllers are
exactly such beasts.

I didn't say that 253 is a silly default for _everything_, I think it's
a silly default for most users.

--
Jens Axboe