In message <[EMAIL PROTECTED]>, Scott Long writes:
>The solution is to re-engineer the way that I/O buffers pass through
>the kernel and only assign KVA when needed (for doing software parity
>calculations, for example).
I've hacked up a prototype to do this and there is no doubt that this
is the
Steven Hartland wrote:
Summary of results:
RAID0:
Changing vfs.read_max 8 -> 16 and MAXPHYS 128k -> 1M
increased read performance significantly from 129Mb/s to 199MB/s
Max raw device speed here was 234Mb/s
FS -> Raw device: 35Mb/s 14.9% performance loss
RAID5: Changing vfs.read_max 8 -> 16 produced
