On 03/14/2014 02:53 PM, Matthew Eaton wrote:
So that wont work as-is, since the parser will bypass the store when the
callback is specified. It needs a one-liner, please try this updated one
instead.
--
Jens Axboe
Ok, so it looks like everything works now except for zero_buffers.
fio-2.1.6.1-11-g0574 + patch
buffer_compress_percentage=100
iops=83457
buffer_compress_percentage=50
iops=78836
buffer_compress_percentage=1
iops=52785
buffer_compress_percentage=0
iops=51013
zero_buffers
iops=69465
scramble_buffers=0
zero_buffers
iops=83451
zero_buffers and buffer_compres_percentage=100 are essentially the same
thing, for both cases it writes buffers just fill of zeroes. So I'm not
sure what you were expecting here since you don't think it works as it
should?
If you have both zero_buffers and scramble set, then the result will be
a bit less compressible. The goal of scramble_buffers is to defeat basic
dedupe attempts. So even if you don't fully refill your buffers every
time, the blocks will be a bit different.
--
Jens Axboe
--
To unsubscribe from this list: send the line "unsubscribe fio" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
