Re: Intel 82801H SATA interrupt issues

Robert Swindells <[email protected]>
Newsgroups gmane.os.netbsd.devel.kernel
Message-ID <[email protected]> 
Emmanuel Dreyfus <[email protected]> wrote:
>On Tue, Aug 27, 2024 at 01:22:10PM +0100, Robert Swindells wrote:
>> Not sure I would say that it is working fine on netbsd-9, the dmesg
>> suggests to me that both your drives are falling back to PIO mode 4.
>
> PIO mode 4 is not high performance, but this is better than hanging 
> at boot on lost interrupts (NetBSD 10.0 with piixide), or to crumble
> under the load because of interrupts storms (NetBSD 10.0 with pciide).

I was partly thinking that you could trace through the -9 driver to see
why it is falling back to PIO mode 4 then compare that with the -10
driver.
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