FreeNAS 9.10.2-U2 slow receive speeds

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SRSR333

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Hi everyone—I am planning to do a clean install of FreeNAS Corral over my current FreeNAS build, and I wanted to back up everything on the server. I then noticed that transfer speeds when downloading files from the server to my notebook are rather slow and oscillate between 100 and 850 Mbps periodically:
78b694e669544a529da7823000c9e94c.png


The NICs on my server and in my notebook, and my router all support full Gigabit throughput, and the cable itself is Cat 6A STP. For some reason, uploads to the server from my notebook are nearly twice as fast, and are consistently fast:
055aad7a58ba480ab50e854caa59aabe.png


The curious thing is that downloading starts off at speeds of 800 Mbps or so, and then fall quickly to roughly half that. What gives? How do I fix this? I was transferring files through simple SMB shares; has overhead of that got to do anything with the lousy speeds? Specs of my server are in my signature.

Thanks in advance.
 
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miniwalks

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Uploads to server are being handled by RAM then down to the disks
Downloads from the server will be dependent on your laptop and its ability to pull the data. The second image looks like you are writing to disk F which is maxing out.


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SRSR333

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Uploads to server are being handled by RAM then down to the disks
Both the server and notebook have 16 GB RAM, server's is 2133 MHz DDR4, notebook's is 1600 MHz DDR3L. Is that not sufficient?
Also, the problem was in the first image, not second. Anyway, disk F: is a SATA III SSD, Samsung 840 EVO.
 
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miniwalks

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Oct 17, 2013
Messages
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Both the server and notebook have 16 GB RAM, server's is 2133 MHz DDR4, notebook's is 1600 MHz DDR3L. Is that not sufficient?

Also, the problem was in the first image, not second. Anyway, disk F: is a SATA III SSD, Samsung 840 EVO.

Ok, so you don't seem to understand how FreeNAS/ZFS caches and handles writes.

Also your signature doesn't show up if your specs, can you have please list them here

What versions of SMB do you have enabled?

How much ram is in use on the server?

Cheers


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