Andrey Kuzmin wrote:
As to your results, it sounds almost too good to be true. As Bob has
pointed out, h/w design targeted hundreds IOPS, and it was hard to
believe it can scale 100x. Fantastic.
Hundreds IOPS is not quite true, even with hard drives. I just tested
a Hitachi 15k drive and it handles 67000 512 byte linear write/s, cache
enabled.
--Arne
Regards,
Andrey
On Thu, Jun 10, 2010 at 6:06 PM, Robert Milkowski <mi...@task.gda.pl
<mailto:mi...@task.gda.pl>> wrote:
On 21/10/2009 03:54, Bob Friesenhahn wrote:
I would be interested to know how many IOPS an OS like Solaris
is able to push through a single device interface. The normal
driver stack is likely limited as to how many IOPS it can
sustain for a given LUN since the driver stack is optimized for
high latency devices like disk drives. If you are creating a
driver stack, the design decisions you make when requests will
be satisfied in about 12ms would be much different than if
requests are satisfied in 50us. Limitations of existing
software stacks are likely reasons why Sun is designing hardware
with more device interfaces and more independent devices.
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