Asus RT-AC86U
has Adaptive QoS (Quality of Service) advertised to support "deliver lag-free online gaming and smooth 4K UHD streaming" .
If I remember correctly in another thread QoS was a reason for bad SMB performance.
Are there other gaming or streaming devices connected?
How many other WLAN routers are visible at your location?
has Adaptive QoS (Quality of Service) advertised to support "deliver lag-free online gaming and smooth 4K UHD streaming" .
If I remember correctly in another thread QoS was a reason for bad SMB performance.
Are there other gaming or streaming devices connected?
How many other WLAN routers are visible at your location?
No, all QoS / traffic analysis features are disabled.
When I'm doing these tests the network is not loaded by other devices.
I still believe the issue is not the network: I get these drops also when I transfer a file inside the NAS from a share to another, which is handled remotely
I still believe the issue is not the network: I get these drops also when I transfer a file inside the NAS from a share to another, which is handled remotely
In many cases a share to share transfer that is initiated remotely will actually transfer the data from the server to the remote client and then back to the server. Are you sure this is not happening?
In many cases a share to share transfer that is initiated remotely will actually transfer the data from the server to the remote client and then back to the server. Are you sure this is not happening?
Yes I am.
Task Manager shows 0% activity and the transfer speed is above 1 GB/s.
Has been said before, but the current combination of Windows + Samba supports remote transfers.
When I'm doing these tests the network is not loaded by other devices.
As long as WiFi/WLAN is enabled, the router will perform "housekeeping" activities (radar detection, switch channels ,..).
Some of these periodic activities have an impact on network performance.
Since I know that, I've switched to using a network switch for performance testing.
If you recommend another tool, it means that SMB is not up to the task?
It's not really a solution, I don't want to use shell to move files, but File Explorer on my PC.
Don't think of it as a solution but as a tool to isolate the problem. Also look at top or jnettop to see if resources are being overloaded.
Don't think of it as a solution solution but as a tool to isolate the problem. Also look at top or jnettop to see if resources are being overloaded.
I have Glances running when there's a copy going on. Nothing strange: during a 1 GB/s SMB transfer one core is doing 25% and the others are pretty idle. If you check out my signature you'll agree I'm not lacking resources for a gigabit SMB.
I have done further testing using rsync: rsync -Pa /sourcefile /destinationfile and a 3GB file generated with dd (
dd if=/dev/urandom of=3GB.bin bs=64M count=48 iflag=fullblock)
I have 3 different HDDs for data.
I moved this file from a NVMe SSD to each of these HDDs back and forth: no performance impact at all. Always over 100 MB/s, both Glances and rsync show correct values.
However, when I target my MergerFS pool with these drives, SOMETIMES I am able to reproduce the performance issue, however there's no stress on the server.
I will open a case to MergerFS's creator, but here's my configuration:
- 3 HDDs
- All default options: defaults,allow_other,cache.files=off,use_ino
- Policy: Most Free Space (yes my HDDs are balanced and evenly used)
when I target my MergerFS pool with these drives, SOMETIMES I am able to reproduce the performance issue, however there's no stress on the server.
I will open a case to MergerFS's creator
Good you found a potential root cause.
Now if I'm not mistaken its the first time MergerFS was mentioned.
How come it wasn't mentioned before?
No, all QoS / traffic analysis features are disabled.
When I'm doing these tests the network is not loaded by other devices.
I still believe the issue is not the network: I get these drops also when I transfer a file inside the NAS from a share to another, which is handled remotely
I have 2 (two) Asus RT-AC68U, both hardwired on my Intranet and functioning as routers and Samba servers. While that set-up was active my transfer rate Disk-Disk (non SSD) on my NAS (Debian based openmediavault 5 running on AMD5 5300 6Cores 12 threads unlocked, 16GB RAM, 23 TB storage) was ~45-52MB/s. Some time ego I build myself custom router utilizing on of my old PC (Nvidia i750 SLI MB Q9300 Intel CPU and 8GB RAM) and FREE BSD pfSense OS and converted both RT-AC68U routers to "Access Points" disabling all other router features. Now my Disk-Disk (non SSD) transfer rate on the same NAS, transferring large, 4-15GB, files is ~105-108MB/s. I also use "rsync" on openmediavault NAS computer to backup drives (somewhat as RAID 1). Using this method I can backup/transfer 4TB of large files from one drive to another in ~4 Hrs. I was never able to accomplish that when my RT-AC68U`s were used as "routers". In my opinion consumer grade routers like yours or mine do not have enough horse power to take advantage of your network speed.
This was my experience and it worked for me. Your situation might be different, but I would suggest you investigate other solution than the one you employ now. There is plenty of alternatives.
Edit: BTW I am on latest OMV6 now
Since you were resolving someone else's issue in my thread, I just started to use FTP, which is instant 
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