Hi,
I have the feeling somthing is not good in my setup as it seems the
performance looks as if it can be better.
The setup: quadcore (Q9450) @ 2,1GHz with 8GB ram.
On the server I run nbd-server and nbd-client via localhost.
The nbd-server has a sparse file of 10GB in a ramdisk (tmpfs).
Now when I create an ext2 filesystem (no journal overhead) and run
iozone I get the following values:
random random bkwd
record
KB reclen write rewrite read reread read write read
rewrite
2097152 256 601977 699077 930964 932460 928055 706410 1011458
814914
Compare that with iozone directly in the ramdisk:
random random bkwd
record
KB reclen write rewrite read reread read write read
rewrite
2097152 256 1497485 2211397 3293086 3318772 3231160 2267725 3268985
4805781
Quit a large difference isn't it?
Folkert van Heusden
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