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

[Ray Morris <support bettercgi com>]

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 gmail com> wrote:

On Tue, Feb 21, 2012 at 10:29 AM, Ray Morris <support 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?

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   Les Mikesell
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