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Re: Only 8 MB/sec write throughput with NetBSD 5.1 AMD64

On Sun, Oct 09, 2011 at 02:22:14PM +0530, Ravishankar S wrote:
> Hi,
> I am trying to set up an FTP/Samba file server for serving media files
> at home and I am seeing only 8MB/sec disk write throughput with NBSD
> 5.1 AMD64. Previously Windows 7 and Linux did 30 MB+/sec on the same
> setup. I just did a simple dd to check
> dd if=/dev/zero of=/store/test.img bs=1000K count=1000
> pciide0 at pci0 dev 9 function 0
> pciide0: vendor 0x10de product 0x0ad0 (rev. 0xa2)
> pciide0: bus-master DMA support present, but unused (no driver support)
> pciide0: primary channel wired to native-PCI mode

NetBSD 5.1 is missing the proper entry for your IDE controller,
as a result it's used in PIO mode.
A 5.1_STABLE kernel should probe is as an ahci controller and performances
will be much better.

Manuel Bouyer <>
     NetBSD: 26 ans d'experience feront toujours la difference

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