On Wed, 30 Aug 2000, Xiaozhou Qiu wrote:
> Is there anyone who has a Tekram DC390 U2W (sym53c895 based) and make
> its throughput rate near 40 MB/s?
> When I read from 3 disks concurrently, the throughput is about 21
> MB/s. The performance even drops a bit if I try to access more disks at
> the same time. I tried to use larger blocks, such as 32k or 64k, and to
> change some driver configurations without success. When I used another
> sym53c875 based controller, I can got throughput about 36 MB/s.
> Any ideas?
A couple of things you might verify in your kernel config (normally
1) whether you're using the ncr53c8xx driver, or the sym53c8xx
driver. While the "ncr" driver will work for an 895 based
card, the "sym" driver should give better performance
2) make sure you answer "no" to the config option "assume
boards are SYMBIOS compatible".
-- Mike Tibor Univ. of Alaska Anchorage (907) 786-1001 voice Network Technician Consortium Library (907) 786-6050 fax firstname.lastname@example.org http://www.lib.uaa.alaska.edu/~tibor/ http://www.lib.uaa.alaska.edu/~tibor/pgpkey for PGP public key
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