Help with slow downloads

[seanmcg182]

System info:
Sab on an ESXi 6.7 VM (Linux, Ubuntu 20.04)... allocated 2CPU cores and 1GB of RAM
CPU is Ryzen 2700X
Storage is 3x 8TB drives handled by TrueNAS v12.
The Sab VM accesses the storage via NFS mounted share, hosted on the same physical machine.

I had to reinstall TrueNAS and Sab last night, and ever since my download performance has been crap.
Before I was getting a constant 30-50MB/s
Now I start out climbing to close to 40MB/s, then the speeds drop to 3-6MB/s for the entire download

Not really sure where to begin here... only started using Linux, Sab, and ESXi about 3 weeks ago.

I can provide any additional information requested, just... i might need some help getting the information.

[sander]

While SAB is not doing anything:

In SABnzbd's upper right corner, click on the wrench symbol ("Status and interface options"), then click on first tab Status, and therev click on the Refresh Arrow.

Post all those results here (except your public IPv4 and iPv6 address)

[seanmcg182]

While SAB is not doing anything:

In SABnzbd's upper right corner, click on the wrench symbol ("Status and interface options"), then click on first tab Status, and therev click on the Refresh Arrow.

Post all those results here (except your public IPv4 and iPv6 address)

Used cache0 B (0 articles)
System performance (Pystone) 205683 AMD Ryzen 7 2700X Eight-C…
Download folder speed 103.8 MB/s (/mediaplex/downloading)
Complete folder speed 16.4 MB/s (/mediaplex/completed)
Internet Bandwidth 28.4 MB/s (227.2 Mbps)

Rerunning the test multiple times gives vstly different results for the folder slpeeds... usually between 30-100MB/s

[seanmcg182]

Update: I have determined with
dd if=/dev/zero of=/[mount directory]/io_test bs=1M count=4096 status=progress
that my Sab VM is able to Write to my TrueNAS array at 122MB/s avg...

So, I'm lead to believe that this issue is something inherent with my Sab VM

[seanmcg182]

Just had Sab lockup for 5 minutes, and then this popped up like 5 times in my Sab's Error log, not sure if related:

[19/Feb/2021:03:02:19] Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/cherrypy/_cpwsgi.py", line 189, in trap return func(*args, **kwargs)
File "/usr/lib/python3/dist-packages/cherrypy/_cpwsgi.py", line 105, in __call__return self.nextapp(environ, start_response)
File "/usr/lib/python3/dist-packages/cherrypy/_cpwsgi.py", line 438, in tail return self.response_class(environ, start_response, self.cpapp)
File "/usr/lib/python3/dist-packages/cherrypy/_cpwsgi.py", line 244, in __init__self.run()
File "/usr/lib/python3/dist-packages/cherrypy/_cpwsgi.py", line 347, in run request.run(meth, path, qs, rproto, headers, rfile)
File "/usr/lib/python3/dist-packages/cherrypy/_cprequest.py", line 617, in run raise cherrypy.TimeoutError()
cherrypy._cperror.TimeoutError

[sander]

cherrypy is the webserver / webinterface of SABnzbd. It complains about a Timeout. So that indicates network problems.

[safihre]

No, a Timeout error indicates that SABnzbd took too long to calculate the response.. So seems the hardware can't keep up with the demand of SABnbzd.