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Forum Discussion
Performance problems with my NV+
[Setup / Devices]
ReadyNAS NV+ / 1GB RAM (RAIDiator 4.1.9-T2 [1.00a043]) /
4xSeagate ST31000528AS 1TB disks / 0.9 of 2.7TB free
FritzBox Wlan 3170
drink green DGS-1005D Gbit switch
macbook pro 7.1 / OSX Lion
[Notes]
* fritzbox is connected to switch. readynas and macbook are connected to switch.
* readynas uses a static ip configuration / 1000Mbit with full duplex is auto negotiated as expected
* jumbo frames are disabled
* On the readynas there are no 3rd party add ons running. Enabled services are cifs/afp/ftp/firefly(hardly used)
* I also tried connecting the laptop directly to the NAS without any switch in between but that made no difference
<EDIT> : I tried the whole thing with jumbo frames disabled- While it increases the read performance it
totally destroys write performance. Uploading a 1GB file to AFP drops to below 4MB/sec. I guess OSX
won't set MTU beyond some standard value (?).
[Issue]
To cut to the point i am experiencing severe performance issues. Sadly I can't
be sure when those started because i hadn't used the readynas a lot for some
time but wanted to archive some data now and noticed that transfers were horribly
slow.
[Tests]
Tests were carried out by reading/writing data to/from mounted
share via 'dd' or using lftp for the ftp transfers. Tests were each
carried out at least twice. I realize those aren't super exact numbers
or measurement tools but they should suffice to demonstrate that
the performance is lacking for some reason.
* Write-To-Samba-Share = 11MB/sec
* Read-From-Samba-Share = 23MB/sec
* Write-To-AFP-Share = 15MB/sec
* Read-From-AFP-Share = 25MB/sec
* Read-From-FTP = 17.64MB/sec
* Write-To-FTP = 11MB/sec
[Closing]
Currently I only have a macbook for performance testing. Some crappy old EeePC around
but that does not even have a Gbit ethernet adapter. I could boot some linux live cd and check
if this issue might be in any way OS related later on.
Also, as a last additional question - is it normal that while navigating in frontview there are
delays of several seconds until some subpage is loaded ? Not for all pages all the time but often
enough.
Any ideas/questions for further detail on this ? I am pretty sure that the performance must
have been much better in the past because i would certainly have noted it before otherwise.
ReadyNAS NV+ / 1GB RAM (RAIDiator 4.1.9-T2 [1.00a043]) /
4xSeagate ST31000528AS 1TB disks / 0.9 of 2.7TB free
FritzBox Wlan 3170
drink green DGS-1005D Gbit switch
macbook pro 7.1 / OSX Lion
[Notes]
* fritzbox is connected to switch. readynas and macbook are connected to switch.
* readynas uses a static ip configuration / 1000Mbit with full duplex is auto negotiated as expected
* jumbo frames are disabled
* On the readynas there are no 3rd party add ons running. Enabled services are cifs/afp/ftp/firefly(hardly used)
* I also tried connecting the laptop directly to the NAS without any switch in between but that made no difference
<EDIT> : I tried the whole thing with jumbo frames disabled- While it increases the read performance it
totally destroys write performance. Uploading a 1GB file to AFP drops to below 4MB/sec. I guess OSX
won't set MTU beyond some standard value (?).
[Issue]
To cut to the point i am experiencing severe performance issues. Sadly I can't
be sure when those started because i hadn't used the readynas a lot for some
time but wanted to archive some data now and noticed that transfers were horribly
slow.
[Tests]
Tests were carried out by reading/writing data to/from mounted
share via 'dd' or using lftp for the ftp transfers. Tests were each
carried out at least twice. I realize those aren't super exact numbers
or measurement tools but they should suffice to demonstrate that
the performance is lacking for some reason.
* Write-To-Samba-Share = 11MB/sec
* Read-From-Samba-Share = 23MB/sec
* Write-To-AFP-Share = 15MB/sec
* Read-From-AFP-Share = 25MB/sec
* Read-From-FTP = 17.64MB/sec
* Write-To-FTP = 11MB/sec
[Closing]
Currently I only have a macbook for performance testing. Some crappy old EeePC around
but that does not even have a Gbit ethernet adapter. I could boot some linux live cd and check
if this issue might be in any way OS related later on.
Also, as a last additional question - is it normal that while navigating in frontview there are
delays of several seconds until some subpage is loaded ? Not for all pages all the time but often
enough.
Any ideas/questions for further detail on this ? I am pretty sure that the performance must
have been much better in the past because i would certainly have noted it before otherwise.
7 Replies
Replies have been turned off for this discussion
- Are you able to ssh into the box and check out dd performance in /c? I'm wondering if fragmentation in the fs may be causing some performance issues.
- $ dd if=/dev/zero of=test.bin bs=1048576 count=500
500+0 records in
500+0 records out
524288000 bytes transferred in 22.583006 seconds (23216041 bytes/sec)
--> 24216041/1024/1024 = 23MB/sec
So that poses a problem/bottleneck. I will reboot&fsck - which will
probably take forever - and I'm not sure if that will be of much help.
*EDIT*
I checked the Hardware Compatibility list : http://www.readynas.com/?page_id=82
My disks (ST31000528AS) are listed as supported for the NV+
I am a bit confused by what hdparm is reporting about the drives though:
$ hdparm -d /dev/hdc
/dev/hdc:
using_dma = 0 (off)
$ hdparm -i /dev/hdc
[...]
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5 udma6
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
So according to this udma5 is selected, but if hdma is to be trusted dma is still
switched off anyway ? Trying to set pio mode or dma on/off yields a "Function not implemented" - What do you get when running "filefrag" on test.bin? How many extents?
- The 500M dd created test file is only a single extent. Other files seem to be way more fragmented,
just two random picks:
$ filefrag china.mkv
china.mkv: 297695 extents found, perfection would be 5 extents
$ filefrag x.mkv
x.mkv: 686 extents found, perfection would be 3 extents - Just noticed that you upgraded the RAM to 1GB? What happens when you try with the stock mem?
- Hi
Just to maybe simplify this slightly .
I have 3 Macs. 1 running Leopard and the other 2 upgraded to Lion.
Both Lions now have massive issues with NAS Duo being v slow and sometimes stopping completely.
Where as the Leopard machine is, as it always was, 20MB approx transfers.
i think something wrong with ReadyNAS Duo and Lion.
Any ideas? - mgarvey what version of RAIDiator are you running. Looking at your earlier posts it sounds like you may be running 4.1.8 which has a general performance issue.
Also this thread has been dead for months. Best not to revive such a thread as the thread being dead is an indication that the issue is resolved.
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