Re: Thecus N2100: where's the bottleneck?

[Peter Bauer <peter.bauer@inode.at>]

Hi !

Last year i tried a backported kernel which gave me nice results on
N2100. I remember I got around ~6 MB during read and write over Network
on NFS file share, but with processor load ~95%.

http://packages.debian.org/lenny-backports/linux-image-2.6.32-bpo.5-iop32x



If you really like a faster device go for a TS-219.

Data from TS-219:

root@NAS:~# uname -a
Linux NAS 2.6.32-5-kirkwood #1 Fri Aug 13 01:53:46 UTC 2010 armv5tel
GNU/Linux

/dev/sda:
 Timing cached reads:   700 MB in  2.00 seconds = 349.86 MB/sec
 Timing buffered disk reads:  298 MB in  3.02 seconds =  98.77 MB/sec


Bye,
Peter
peba@inode.at


On Don, 2010-10-21 at 01:37 +0200, Markus Kreiner wrote:
> installed debian on my n2100, following martin's instructions.
> 
> i *think* i also got the kernel with the DMA-patches, but am too much
> a linux novice to tell for sure, uname -a says:
> Linux debian 2.6.26-2-iop32x #1 Thu Sep 16 18:42:37 UTC 2010 armv5tel GNU/Linux
> 
> problem is, i barely get more than 800KB/s written to the N2100, no
> matter if via cable, wifi, samba, or ftp, it's always the same. read
> speeds are .. well.. better with ~4,5MB/s
> 
> some things i tried:
> 
> debian:~# hdparm -tT /dev/md2
> 
> /dev/md2:
>  Timing cached reads:   118 MB in  2.02 seconds =  58.54 MB/sec
>  Timing buffered disk reads:   74 MB in  3.03 seconds =  24.41 MB/sec
> 
> 
> debian:~# dd count=1k bs=1M if=/dev/zero of=/mnt/disk/test.img
> 1024+0 Datensätze ein
> 1024+0 Datensätze aus
> 1073741824 Bytes (1,1 GB) kopiert, 50,8158 s, 21,1 MB/s
> 
> 
> 
> do i expect too much by hoping to get at least *a little* more throughput?
> 
> btw, does anyone know (or have) an arm-build of netio? (plain to much
> a noob to build myself)
> 
> thanks,
> markus.
> 
>