[linux-lvm] mirror_region_size default: 4096 six times faster than 512?

[Ray Morris]

512 byte sector consumer SATA drives from Seagate and Hitachi. Drives attached to a 9560 RAID card exhibited more difference than drives in a different system attached to the motherboard directly. As I mentioned, I haven't done extensive or highly scientific testing, but in general, across various hardware using various software, copying chinks of a few MBs seems to always beat copying bytes or KB per chunk.

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Les Mikesell <lesmikesell at gmail.com> wrote:

On Tue, Feb 21, 2012 at 10:29 AM, Ray Morris <support at bettercgi.com> wrote:


If 4096 is OFTEN several times faster than 512, would it make sense
to consider canging the default?


What disks are underneath this?  One of the new 4k sector types?

-- 
   Les Mikesell
    lesmikesell at gmail.com

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