Re: which dual-CPU hardware/OS is fastest for PostgreSQL?

Joshua D. Drake wrote:
>>RAID controllers tend to use i960 or StrongARM CPUs that run at speeds
>>that _aren't_ all that impressive.  With software RAID, you can take
>>advantage of the _enormous_ increases in the speed of the main CPU.
>>
>>I don't know so much about FreeBSD's handling of this, but on Linux,
>>there's pretty strong indication that _SOFTWARE_ RAID is faster than
>>hardware RAID.
>>
>>
>
> Unless something has changed though, you can't run raid 10
> with linux software raid and raid 5 sucks for heavy writes.

You could always do raid 1 over raid 0, with newer kernels (2.6ish)
there is even a dedicated raid10 driver.

Jan