the speed of reading a 1Gbyte video from the NAS to a WIN10 computers varies between 30 ... 90 Mbyte/s. I don`t see any pattern, it seems to be rather random from hour to hour and day by day. The Inconsitency started somewhen with an update (I guess 6.2.x). No differece by virus scanner turned on/off on NAS or computer.
There`s another topic that is rather strange: The speed seems to depend from the source folder. That means that a file is read by ~70 Mbytes/s wheres the same file is read reproducible down to 40 Mbytes/s from a subfolder.
When you say "speed of reading a 1Gbyte video"; are you playing a video from the RN102 or are you doing a usual file copy transfer to and from the NAS?
Also, have tried/checked the following:
1. Changing Ethernet cables?
2. Checked network activity of other devices on the network while the reading of the video?
3. Tried a smaller sized video?
4. Doing a file transfer to and from the NAS with the same size?
first of all thank you for your kind reply. All your mentioned hypothesis make sense to me. Let me reply to your questions in blue:
I`m not streaming videos but only usual file transfers via explorer.
1. Changing Ethernet cables?
I checked differnent cat5 cables on different ports on the routers -> no effect. I guess, the problem came up since upgrading to firmware 6.2.x
2. Checked network activity of other devices on the network while the reading of the video?
I checked network traffic in my router and task manager and found no unsuspiciuous load while transfering no file. No improvement by switching off all other connections to the router except the NAS and my computer. The CPU load of the router while file transfer is below maximum, too.
3. Tried a smaller sized video?
Yes, but without effect.
4. Doing a file transfer to and from the NAS with the same size?
I checked but read and write show the same inconsistencies and range in speed.
I´m really happy with my Netgear products but this seems to be a kind of odd phenomenon. I appreciate your support to find rooot cause and make this product work as it did before.
Can you measure your write speed to a different device on the network; say from one computer to another? Just to get an idea or baseline of your connection speed.
I am also seeing this same behavior. I have a gigabit LAN system connected to the RN102 through a gigabit switch, and running rsynch I'mn getting speeds as low as 38kB/s and as high as 300kB/s on similar sized files which no apparent pattern.
I've been having many SEVERE problems with the RN, and I'm starting to think that the sum of my issues is due to the RN itself. I'm currenly trying to get all the data stored on the RN onto other disks, and as such have been running rsync for over 28 hours now and still haven't been able to pull more than 600GB off of the unit.
UPDATE: I disabled antivirus and now I'm getting speed in excess of 6 MB/s, and peaking at up to 20MB/s. Still variant, but much more performant! It appears that the AntiVirus is the root of my performance problems.
I am also seeing this same behavior. I have a gigabit LAN system connected to the RN102 through a gigabit switch, and running rsynch I'mn getting speeds as low as 38kB/s and as high as 300kB/s on similar sized files which no apparent pattern.
The OP is seeing speeds between 30-90 MB/s, so the behavior he is seeing is not the same as yours. His worst speeds are quite a bit faster than your best.
Though it would do no harm to disable antivirus and retest.
Can you measure your write speed to a different device on the network; say from one computer to another? Just to get an idea or baseline of your connection speed.
Regards,
Hello FramerV,
yes, of course. I disconnected the LAN cable from the NAS and plugged it into a WIN10 notebook instead of it. File transfers between notebook and desktop computer via my router is reproducible and robust at 113 Mbyte/s.
at this point I try to summarize and to interpret the findings we konw so far. Please, correct me in case I draw the wrong conclusions.
Problem description:
Inconsistent transfer read/write rates of RN102 - Transfer rate is varying from minute to minute in the range of 30-90 Mbyte/s
Hypothesis proofed as wrong, i.e.root cause is not:
H1. Network (inkcluding Cabels, Router and Computer) -> replacing the NAS by a notebook on the same lan cable shows full and stable transfer speed
H2. Any app or av software on the NAS -> Disabling av, apps and all services except SMB shows no effect.
Open findings & hypothesis:
H3. Each day when the NAS wakes up at 7am a "ReadyNASOS Background Service started" is found in the log file -> What is it?
H4: Transfer speeds seems to correlate with CPU temperature readings of the NAS. At a range of 42-47°C the speed is (most of the time) higher than at a range of 50-55°C. -> CPU overload?
H5: Problem was not present at former times. It become a problem when updating firmware to 6.2.X -> firmware related?
H6: Transfer speed is depending on the folder of the NAS. A file from a certain subfolder is (most of the time) transfered faster by ~ 50% than the the same file from a folder above. -> I have no clue how to interpret?
at this point I try to summarize and to interpret the findings we konw so far. Please, correct me in case I draw the wrong conclusions.
Problem description:
Inconsistent transfer read/write rates of RN102 - Transfer rate is varying from minute to minute in the range of 30-90 Mbyte/s
Hypothesis proofed as wrong, i.e.root cause is not:
H1. Network (inkcluding Cabels, Router and Computer) -> replacing the NAS by a notebook on the same lan cable shows full and stable transfer speed
H2. Any app or av software on the NAS -> Disabling av, apps and all services except SMB shows no effect.
Open findings & hypothesis:
H3. Each day when the NAS wakes up at 7am a "ReadyNASOS Background Service started" is found in the log file -> What is it?
H4: Transfer speeds seems to correlate with CPU temperature readings of the NAS. At a range of 42-47°C the speed is (most of the time) higher than at a range of 50-55°C. -> CPU overload?
H5: Problem was not present at former times. It become a problem when updating firmware to 6.2.X -> firmware related?
H6: Transfer speed is depending on the folder of the NAS. A file from a certain subfolder is (most of the time) transfered faster by ~ 50% than the the same file from a folder above. -> I have no clue how to interpret?
Thank you all for your time and support. Regards,
Robert
If H6 is a read-only test it could be due to fragmentation.
Your volume looks healthy, but is quite old (2013). There have been some performance improvements since then that can only be done on new volumes. Though it is painful, you could try doing a factory reset and restoring data from backup. I did this last May and I did see a significant performance boost (I was seeing typical speeds around ~40 MB/s before the reset, and in the 70s afterwards).
I'm not sure how you are measuring speeds. If you were to include NasTester results ( http://www.808.dk/?code-csharp-nas-performance ) then it would be easier for other folks to compare their performance to yours.
I did a defragmentation in the meanwhile however w/o any effect. So far, I measured the transfer speed with the explorer. Please, find attached the measurements of the NAS performance tester. I guess I measured during a weak time of my NAS ...
I was seeing speeds in this range on my RN102 last spring (and it had an old volume too). Doing a reset and restoring the data made quite a big improvement in speed.
Your volume looks healthy, but is quite old (2013). There have been some performance improvements since then that can only be done on new volumes. Though it is painful, you could try doing a factory reset and restoring data from backup. I did this last May and I did see a significant performance boost (I was seeing typical speeds around ~40 MB/s before the reset, and in the 70s afterwards).
...
Thank you for sharing your experience and insight. However I´m not willing to spend my rare spare time into a factory reset and data restore. I´m not familiar with the process and I would have to spend some time on it. So, if I have to re-install a NAS to solve this issue then it won`t be a Netgear NAS anymore. Other makers may have other issues but this one is absolutely unacceptable: Your volume is 3 years old, so you have to re-install to get back to normal performance ....
Once again, thank you and the community for your contribution.
