on 09/04/2010 14:14 Alexey Tarasov said the following:
> Hello.
>
> I see considerably increased performance when creating over gnop -S 4096
> virtual disk. Even when I create zpool over raw disks the performance is very
> bad and concurent writes stalls. When using gnop, zfs works VERY fast!
>
> Btw, here is another discussion, may be there is a bug in a mav@ commit,
> because he has added support for >512 sector size:
> http://lists.freebsd.org/pipermail/freebsd-current/2010-April/016495.html
Looks like I was wrong:
/*
* Determine the device's minimum transfer size.
*/
*ashift = highbit(MAX(pp->sectorsize, SPA_MINBLOCKSIZE)) - 1;
This is in vdev_geom_open and SPA_MINBLOCKSIZE is 512.
--
Andriy Gapon
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