mpt2sas 6Gb/s, PCIE 2.0，the card is four port,so theoretical ratio can reach to 2.4Gb/s,it is not bottleneck. I test read two raid5 using dd,
such as dd if=/dev/md0 of=/dev/zero 1M
dd if=/dev/md1 of=/dev/zero 1M
the total read bandwidth can reach to 2.3GB/s,so I/O bus is not a problem.
------------------------------------------------------------------
发件人：Dag Nygren <dag@xxxxxxxxxx>
发送时间：2013年12月16日(星期一) 21:06
收件人：lilofile <lilofile@xxxxxxxxxx>
抄 送：Pieter De Wit <pieter@xxxxxxxxxxxxx>; linux-raid <linux-raid@xxxxxxxxxxxxxxx>
主 题：Re: 答复：two raid5 performance
On Monday 16 December 2013 15:57:42 lilofile wrote:
> the disks involved in the array is sTEC ssd disk,they are connected by mpt2sas 6Gb/s
I/O bus to the card?
Best
Dag
--
To unsubscribe from this list: send the line "unsubscribe linux-raid" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
