Re: With Daniel Phillips Patch (was: aic7xxx with 2.4.9 on 7899P)

Sven Heinicke
2001-08-21T22:49:30Z

Justin,

I've tried removing your check, for writing bonnie++ still reports
slower write times then IDE drive on the other system. Daniel Phillips
was great at helping me notice a problem that was causing slow down
but not related to the aic7xxx driver, thus I am now trying the
7.4.8-ac8 kernel.

I made your change whe will get try to get my user to test the system
with and without your change.

Sven

Justin T. Gibbs writes:
> >Disk access is faster then before but still slower then the IDE
> >drive. Any ideas?
>
> It could be the occasionall ordered tag that is sent to the drive to
> prevent tag starvation. If you search in drivers/scsi/aic7xxx/aic7xxx_linux.c
> for "OTAG_THRESH" and make that if test always fail (add an "&& 0") you will
> have effectively disabled this feature. I should probably make it an option
> that defaults to off.
>
> --
> Justin