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by ChriD » Sat Feb 12, 2011 7:58 pm
Hi,
I've got the Problem that my Pogoplug seems to studder if i read FullHD Movies from
a Samba Share. I'm a Linux newbie
and maybe someone please can help me?
I did some research and there is the information i gatherd until now
My System:
Pogoplug v2.0 with Arch Linux ARM install Linux where there is a samba server
Attached 3 x USB 2.0 external Discs at 1500GB 7200rpm NTFS Partitions an samba share
The Share is read by a TV (Samsung UE55C8780) with SamyGo Extensions and CIFS Mount on USB 2.0 Stick
attached to the TV
Problem Pogplug -->
Pogoplug Idle
$this->bbcode_second_pass_quote('', 'C')pu(s): 0.7%us, 1.0%sy, 0.0%ni, 98.3%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Pogoplog at work (reading from share)
$this->bbcode_second_pass_quote('', 'C')pu(s): 0.3%us, 5.3%sy, 0.0%ni, 0.0%id, 93.4%wa, 0.7%hi, 0.3%si, 0.0%st
CPU usage of processes is few, but "wa" actions is too much!
I read that "wa" is something like that the CPU is waiting for IO actions to complete?
$this->bbcode_second_pass_quote('', ' ')PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
11153 root 20 0 21828 2652 1776 S 4.3 2.1 1:50.05 smbd
4479 root 20 0 3020 1176 512 S 3.3 0.9 1:37.60 mount.ntfs-3g
ntfs3g --> 3,3%
smbd --> 4,3%
So it seems that my little Pogoplug runns out of "IO - Power" when have to deal with Full-HD data from NTFS Devices
Does anyone have a Idea how to deal with this problem? Is there a chance to get some better performance?
I do not want to format my discs to ext3! (Of course this would be the best solution)
I only get to 2,0MB/s read/write access to the NTFS usb discs via samba share. I gto this rate with FTP too!
So it seems to be a Problem reading the NTFS Disc?! But shouldn't i get at least 6MB/s?
The speed of the disc themselves seems to be fine
$this->bbcode_second_pass_quote('', '/')dev/sdd1:
Timing buffered disk reads: 90 MB in 3.05 seconds = 29.53 MB/sec
/dev/sde1:
Timing buffered disk reads: 70 MB in 3.05 seconds = 22.95 MB/sec
/dev/sdf1:
Timing buffered disk reads: 70 MB in 3.10 seconds = 22.58 MB/sec
i found this thread. It seems to be the same problem, but there was no solution!
Seems to be that i am the only one with this problem?