韓家標 Bill Hacker wrote:
>
> You haven't indicated what drives are on that controller, or how (RAID?)
> arranged.,, what sort of on-drive or on-controller cahce and policy.
>
> Nor how you measured the '..performs better', which a single
> can often do compared to several of the possible RAID configurations.
>
> Otherwise, those are not actually 'bad' numbers for sustained I/O -
> especially if anything-at-all is going on at the same time that needs to
> intervene and move the r/w heads 'elsewhere' - however briefly.
>
> More info?
>
> Bill
>


The issue has already been confirmed and a "fix"/hack committed so
there's little point busting his balls for lack of information in his
email. It seems like he was only requesting any updated information on
the issue, not a full diagnosis.

The Dell PE-860 only comes with 2 drives, so its going to be independent
drives, raid 1, or raid 0. Frankly if independent drives or raid 0 are
performing that poorly as well it would seem the issue is even worse
than previously indicated. As for the cache policy, seeing as that's the
fix, your question seems a little odd.

Best regards,

Chris
_______________________________________________
freebsd-stable@freebsd.org mailing list
http://lists.freebsd.org/mailman/lis...freebsd-stable
To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org"