Slow Nic Speed

[tuxylord]

Hello,

 

i'm new at Unraid.

 

I have a problem with the slow Nic Speed, this is about max. 60MB/S

 

Can somebody help to solve this.

 

Thanks in advance.

 

 

dr-strange-diagnostics-20200803-0935.zip

[trurl]

How are you testing? The speed you mention seems typical for parity writes so if your test is transferring files to the parity array your NIC isn't really the reason. 

 

On mobile now so can't look at Diagnostics. 

[tuxylord]

Hello,

i'm using two 250GB NVMe as a cache, so the speed should be really faster.

The files will be written on the array somewhere in the night.

There is a Synology on the same Switch and the NIC speed of this is 100-110 MB/S

I've copied two large Files, about 120GB, to my Computer and the Download speed was about 64MB/S

 

Edited August 3, 2020 by tuxylord

[trurl]

You don't specifically mention if you are copying to a cached user share so there is still some question. By default, normal user shares are not cached.

[JorgeB]

Start by running a single stream iperf test to rule out any LAN issue.

[tuxylord]

@trurl

You can choose to use the cache for new files in the settings.

 

@johnnie.black

i'm gonna test it.

 

Thanks for your help

i'm gonna test the speed with iperf, then i will be back.

[trurl]

15 minutes ago, tuxylord said:

You can choose to use the cache for new files in the settings.

Each user share has its own settings for whether and how it uses cache. You have some user shares that are not using cache and others that are. That is why I questioned whether you were actually writing to cache and not directly to the array. And I still don't know since you didn't really say.

 

Also, your dockers are not configured to live on cache. Their performance will be impacted by slower parity writes, and they will keep array disks spinning since they will always have open files. Maybe same could be said for your VMs, I didn't check.

[tuxylord]

So i've done an iperf test beetween my ubuntu Workstation and the Unraid Server, the results are

 

stefan@balus-hell:~$ iperf3 -c 192.168.3.156
Connecting to host 192.168.3.156, port 5201
[  5] local 192.168.3.47 port 57634 connected to 192.168.3.156 port 5201
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec   114 MBytes   956 Mbits/sec    0    315 KBytes       
[  5]   1.00-2.00   sec   112 MBytes   937 Mbits/sec    0    315 KBytes       
[  5]   2.00-3.00   sec   112 MBytes   942 Mbits/sec    0    315 KBytes       
[  5]   3.00-4.00   sec   112 MBytes   942 Mbits/sec    0    315 KBytes       
[  5]   4.00-5.00   sec   112 MBytes   942 Mbits/sec    0    315 KBytes       
[  5]   5.00-6.00   sec   112 MBytes   942 Mbits/sec    0    315 KBytes       
[  5]   6.00-7.00   sec   112 MBytes   942 Mbits/sec    0    315 KBytes       
[  5]   7.00-8.00   sec   112 MBytes   937 Mbits/sec    0    315 KBytes       
[  5]   8.00-9.00   sec   112 MBytes   942 Mbits/sec    0    315 KBytes       
[  5]   9.00-10.00  sec   112 MBytes   942 Mbits/sec    0    315 KBytes       
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec  1.10 GBytes   943 Mbits/sec    0             sender
[  5]   0.00-10.00  sec  1.10 GBytes   941 Mbits/sec                  receiver

iperf Done.

 

 

[tuxylord]

All Dockers are stopped at the moment. I dont have any VMs.

All Shares, that are important for me, is cache enabled.

This System is a test System to find out if Unraid is what i need.

When i copy Files on the server cache is used, i can see it in the main menu.

Sorry for my English, i didn't use it often.

 

[JorgeB]

Enable turbo write and copy directly to the array, is speed same, better, worse?

[tuxylord]

Speed is 5MB/S slower.

[JorgeB]

Now try coping to a disk share directly, enable then fist on Settings -> Global Share Settings then copy for example to \\tower\cache