Re: 5.1 RAID5 write performance

[mlelstv%serpens.de@localhost (Michael van Elst)]

ef%math.uni-bonn.de@localhost (=?iso-8859-1?Q?Edgar_Fu=DF?=) writes:

>I first tried against the fs. I now added a scratch partition and tried the 
>devices:
>I get 40 to 50MB/s on the raw device and a whopping 0.57MB/s on the block 
>device!

The block device writes through the buffer cache which has its own
idea of block sizes which is either the filesystem block size stored
in the disklabel for that partition or 2048 bytes as a default.


-- 
-- 
                                Michael van Elst
Internet: mlelstv%serpens.de@localhost
                                "A potential Snark may lurk in every tree."