Re: O_DIRECT to md raid 6 is slow
From: Stan Hoeppner <hidden>
Date: 2012-08-20 05:42:05
On 8/20/2012 12:19 AM, Dave Chinner wrote:
Oh, you're probably complaining about that write number.
I wasn't complaining. You know me better than that. The cops caught me robbing a bank. Under pressure, I pointed at you and said "He gave me the gun and ammo!". ;) Of course it was completely my responsibility for shooting myself in the foot with it. :)
Either way, the point I was making in the original post stands - RAID6 sucks balls for most workloads as they only do small writes in comparison to the stripe width of the volume....
Agreed. Which was the point I originally made in this thread. "We" simply got a minor detail wrong. It seems folks on the linux-raid list like to split every hair 2^6 times, with extremely valid points getting lost when the discussion drops into the weeds. Sorry I dragged you into this Dave. -- Stan