I surrender and yet again realize i have boring hardware. :-P
Stuart Henderson wrote:
>On 2013-07-13, Nick Holland wrote:
>> A few years ago, after someone said basically the same thing
>(actually,
>> I think it was more emphatic -- as in, "it is impossible to see gains
>> beyond ..."), I played
On 2013-07-13, Nick Holland wrote:
> A few years ago, after someone said basically the same thing (actually,
> I think it was more emphatic -- as in, "it is impossible to see gains
> beyond ..."), I played with it and saw significant gains well beyond
> bs=64k for raw devices. I'd be surprised if
On 07/12/13 19:11, Alexander Hall wrote:
> On 07/12/13 23:50, Nathan Goings wrote:
...
>> However, when I run `dd if=/dev/zero of=/dev/wd0c bs=1M' After 3-4
>
> use the raw device, /dev/rwd0c, not the block device. I have found close
> to no speed improvements with bs > 64k.
A few years ago, af
Nathan Goings writes:
> I have a disk -- IIRC, Seagate Barracuda 160gb 7200RPM 8MB Cache SATA
> 3.0GB/s
>
> dmesg:
> wd0 at pciide0 channel 0 drive 0:
> wd0: 16-sector PIO, LBA48, 152626MB, 312579695 sectors
> wd0 (pciide0:0:0): using PIO mode 4, Ultra-DMA mode 6
>
> However, when I run `dd if=/
On 7/12/2013 5:12 PM, Alexander Hall wrote:
use the raw device, /dev/rwd0c, not the block device.
Tried: dd if=/dev/zero of=/dev/rwd0c bs=64k
It runs at ~72MB/s.
Thanks!
On Fri, Jul 12, 2013 at 03:50:58PM -0600, Nathan Goings wrote:
> However, when I run `dd if=/dev/zero of=/dev/wd0c bs=1M' After 3-4
> hours, it's only running at ~2.4MB/s. CPU usage is about 30%.
Do instead:
dd if=/dev/zero of=/dev/rwd0c bs=1M
Nicolai
On 07/12/13 23:50, Nathan Goings wrote:
I have a disk -- IIRC, Seagate Barracuda 160gb 7200RPM 8MB Cache SATA
3.0GB/s
dmesg:
wd0 at pciide0 channel 0 drive 0:
wd0: 16-sector PIO, LBA48, 152626MB, 312579695 sectors
wd0 (pciide0:0:0): using PIO mode 4, Ultra-DMA mode 6
However, when I run `dd if
Full GENERIC kernel dmesg on request:
OpenBSD 5.3 (GENERIC) #26: Fri Jul 12 16:26:16 MDT 2013
r...@binarynet.hsd1.nm.comcast.net.:/usr/src/sys/arch/i386/compile/GENERIC
cpu0: Intel(R) Celeron(R) D CPU 3.20GHz ("GenuineIntel" 686-class) 3.22 GHz
cpu0:
FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,M
I have a disk -- IIRC, Seagate Barracuda 160gb 7200RPM 8MB Cache SATA
3.0GB/s
dmesg:
wd0 at pciide0 channel 0 drive 0:
wd0: 16-sector PIO, LBA48, 152626MB, 312579695 sectors
wd0 (pciide0:0:0): using PIO mode 4, Ultra-DMA mode 6
However, when I run `dd if=/dev/zero of=/dev/wd0c bs=1M' After 3-
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