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

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

The following reply was made to PR kern/46325; it has been noted by GNATS.

From: Christoph Egger <Christoph_Egger%gmx.de@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: Martin Husemann <martin%duskware.de@localhost>, 
kern-bug-people%netbsd.org@localhost, 
 gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost
Subject: Re: kern/46325: wapbl + disk io = temporary system freeze
Date: Thu, 12 Apr 2012 12:40:50 +0200

 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