Samba network mount low write speed

Greed1sGood · 2014-08-24 12:44:11

I have a nas connected to a wireless router. I mount the shared directory using the following line in fstab:

//NAS/media cifs /media/media guest,uid=1000,gid=1000 0 0

I get about 1.9 MBps write speed and 4 MBps read speed.
On a windows 8 pc I get almost the same read speed while the write speed is 4.5 MBps (2 times higher).
I also noticed that every other amount of MB written to the NAS the copy process stops for 5-10 seconds and than continues as if the buffer is too small. On the windows 8 pc on the other hand the write is continuous.
On a separate note I also experience a considerable delay on shutdown ~90sec.

Last edited by Greed1sGood (2014-08-24 20:04:26)

t0m5k1 · 2014-08-24 15:16:33

is the drive on the nas NTFS & is the NAS linux?
if yes the answer is probably due to the ntfs-3g driver consuming the cpu!!

Greed1sGood · 2014-08-24 17:37:11

t0m5k1 wrote:

is the drive on the nas NTFS & is the NAS linux?
if yes the answer is probably due to the ntfs-3g driver consuming the cpu!!

The NAS is Buffalo linkstation LS-CHLv2 the boot and root partitions use ext3 and the data partition file system is xfs. I know that this is not a high end nas but the write speed is clearly too low and I kow for a fact that it's twice as high on a windows pc.

Last edited by Greed1sGood (2014-08-24 17:40:12)

t0m5k1 · 2014-08-25 14:58:22

this might shed light on the issue:
http://forums.buffalotech.com/index.php?topic=9406.0

reading this will tell you:
gigabit can provide faster transfer rates than what you currently have
the hardware is known to give low performance (600mhz cpu!!!)

essentially this is not a arch issue but a buffalo issue also google is your friend

Last edited by t0m5k1 (2014-08-25 14:59:39)

Soukyuu · 2014-08-25 18:19:24

That doesn't explain why he is getting higher write speeds writing to the same NAS from a windows client though...

alphaniner · 2014-08-25 18:44:37

^ Agreed, the NAS does not seem to be the problem here. But unless Windows and Arch are on the same machine this could be a client side h/w issue or perhaps a wireless signal issue. Either install Arch on the Windows machine or try using NFS to connect to the NAS from Arch.

t0m5k1 · 2014-08-25 19:16:58

so you expect samba to behave just like win8.1 or win7?
come on there are going to be differences & the big one here is the nas is low end!

Try different versions of samba & see if that affects it
Try lots of different combinations on your arch pc & then try different samba shares on other pc's from your arch pc & then compare the results.

according to the link i provided it seems that even if you increase the frame size on the buffalo itself the most you get is 8Meg/s via cat5 lan
if your nic & router supports it get some cat5e & be happy with gigabit
otherwise get a new nas or try the custom firmware

(yes none of the above explains why win8 gives faster &/or why the buffalo is slower but here this is an arch forum so my response will & does focus on arch!)
sorry

Arch Linux

#1 2014-08-24 12:44:11

Samba network mount low write speed

#2 2014-08-24 15:16:33

Re: Samba network mount low write speed

#3 2014-08-24 17:37:11

Re: Samba network mount low write speed

#4 2014-08-25 14:58:22

Re: Samba network mount low write speed

#5 2014-08-25 18:19:24

Re: Samba network mount low write speed

#6 2014-08-25 18:44:37

Re: Samba network mount low write speed

#7 2014-08-25 19:16:58

Re: Samba network mount low write speed

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