Re: kern/46325: wapbl + disk io = temporary system freeze

[Christoph Egger <Christoph_Egger%gmx.de@localhost>]

On 04/12/12 11:50, Martin Husemann wrote:
> The following reply was made to PR kern/46325; it has been noted by GNATS.
>
> From: Martin Husemann<martin%duskware.de@localhost>
> To: gnats-bugs%NetBSD.org@localhost
> Cc:
> Subject: Re: kern/46325: wapbl + disk io = temporary system freeze
> Date: Thu, 12 Apr 2012 11:47:51 +0200
>
>   Stupid questions, just to make sure we are not barking up the wrong tree:
>
>    - your underlying disk io speed is OK? (dmesg excerpts or bonnie++ runs
>      would give hints)

wd0 at atabus1 drive 0
wd0: <ST3500413AS>
wd0: drive supports 16-sector PIO transfers, LBA48 addressing
wd0: 465 GB, 969021 cyl, 16 head, 63 sec, 512 bytes/sect x 976773168 sectors
wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133)

that's ok.

pciide0 at pci0 dev 17 function 0: AMD Hudson SATA Controller (rev. 0x40)
pciide0: bus-master DMA support present, but unused (no driver support)
pciide0: primary channel configured to native-PCI mode
pciide0: using ioapic0 pin 19 for native-PCI interrupt
atabus0 at pciide0 channel 0
pciide0: secondary channel configured to native-PCI mode
atabus1 at pciide0 channel 1

eek, DMA support is missing in pciide0.


>    - your time keeping works? vmstat -i shows "cpuN time" with aproximately
>      HZ frequency?

interrupt                                     total     rate
cpu0 timer                                 17264946       99

Yes, that's fine.

Christoph