DSM-G600, DNS-3xx and NSA-220 Hack Forum

caio · 2008-09-29 11:18:01

hello,
I open this thread because I've the same problem as many others before with my new DNS-323, but I've not found a solution yet.
The main problem is that the transfer rate writing to the NAS is painful slow, I can write about 1GB every hour, and this is unacceptable also because I've to transfer my archive of about 200GB and I can't wait more than 1 week!!
EDIT: reading from NAS one big file (2GB) I can reach only 5MB/s of average...I think is really a too slow speed, I expected to reach about 20MB/s...am I wrong?
EDIT2: reading the same file from Vista x64 on my notebook I can reach about 8,3MB/s...too slow, but a little bit better.

The NAS is running the 1.05 original firmware version, and the drives (two barracuda 7200.10 capable of about 45MB/s with hdparm) are configured in raid 1.

Another problem is when I write files larger than 4GB, I've an error telling that the "file is too big", and the file is automatically cutted at 2GB.

I'm using linux (gentoo) in a samba mounted directory, with GB ethernet NIC and a cisco GB switch in the middle.

Somebody can suggest me how to solve these problems?

Thank you

Last edited by caio (2008-09-29 11:39:12)

caio · 2008-09-29 13:06:05

installed fun_plug and making test on device:

Code:

Timing buffered disk reads:   86 MB in 3.01 seconds = 29207 kB/s
/ # hdparm -tT /dev/md0

/dev/md0:
Timing buffer-cache reads:   110 MB in 0.51 seconds = 220555 kB/s
Timing buffered disk reads:   88 MB in 3.00 seconds = 29939 kB/s

these are the results, so is not so bad.
So why is so slow during tranfer?

could be a samba problem related?

EDIT:
change to 1.04 firmware had slowed the transfer rate from 5MB/s to 4MB/s....somebody can tell me why please?

Last edited by caio (2008-09-29 13:21:50)

caio · 2008-09-29 13:24:35

other informations: dmesg show me that I would have to upgrade ictls

Code:

raid1: raid set md0 active with 2 out of 2 mirrors
ext3: No journal on filesystem on sda4
ext3: No journal on filesystem on sdb4
EXT2-fs warning: mounting unchecked fs, running e2fsck is recommended
Link Layer Topology Discovery Protocol, version 1.05.1223.2005
dev is  <NULL>
md: mdadm(pid 1713) used obsolete MD ioctl, upgrade your software to use new ictls.

fordem · 2008-09-29 15:48:16

Check your network infrastructure.

8.3MB/sec (Vista x64 to laptop) is a little slow for 100 mbps, you should be able to get closer to 12MB/sec, likewise from the DNS-323, over a 100 mbps LAN you should see closer to 10 MB/sec - note - these figures are for single large file transfers - large numbers of smaller files WILL take significantly longer to transfer

The unit is "CPU bound"

caio · 2008-09-29 16:10:47

fordem wrote:
Check your network infrastructure.

8.3MB/sec (Vista x64 to laptop) is a little slow for 100 mbps, you should be able to get closer to 12MB/sec, likewise from the DNS-323, over a 100 mbps LAN you should see closer to 10 MB/sec - note - these figures are for single large file transfers - large numbers of smaller files WILL take significantly longer to transfer

The unit is "CPU bound"

yes I agree with all,
all my test until now was done with only 1 file of 2.0GB (limit of samba).

But I think that these speed values are still too slow.
I've an update now:
I've enabled NFS, and now mounting the directory as NFS under Linux I can write on NAS one file of 5.0 GB in 12m28.740s
So with NFS I've a tranfer rate of 6,95 MB/s.
Better than before (1GB/h in write), but really worse than speed I expect.

bq041 · 2008-09-29 18:01:48

Who told you the limit of Samba is 2 GB? This is not true. The FAT32 filesystem is size limited. I currently transefer 8 GB filess via Samba with no issues. All my video files are between 2 and 10 GB.

caio · 2008-09-30 00:46:33

bq041 wrote:
Who told you the limit of Samba is 2 GB? This is not true. The FAT32 filesystem is size limited. I currently transefer 8 GB filess via Samba with no issues. All my video files are between 2 and 10 GB.

It was my supposition because in the first attempt my big files (> 2GB) was automatically trunked at 2GB transferring via samba, while using NFS this doesn't happen.
But this is not my main problem, that now that I've finished to transfer 180GB of files (in exactly 517m48.441s) is still the low speed transfer.
The NAS continuosly show me "stalled" in Konqueror when I browse it and this is not a good thing.

DSM-G600, DNS-3xx and NSA-220 Hack Forum

Announcement

#1 2008-09-29 11:18:01

Transfer extremely slow and file size too big - from linux

#2 2008-09-29 13:06:05

Re: Transfer extremely slow and file size too big - from linux

Code:

#3 2008-09-29 13:24:35

Re: Transfer extremely slow and file size too big - from linux

Code:

#4 2008-09-29 15:48:16

Re: Transfer extremely slow and file size too big - from linux

#5 2008-09-29 16:10:47

Re: Transfer extremely slow and file size too big - from linux

fordem wrote:

#6 2008-09-29 18:01:48

Re: Transfer extremely slow and file size too big - from linux

#7 2008-09-30 00:46:33

Re: Transfer extremely slow and file size too big - from linux

bq041 wrote:

Board footer