Slow speed via mount + vfs

Help and Support
1

Hello :slight_smile:

I have a truenas box and setup smb to share files with my LAN. All Networking is 1Gb.

What is the problem you are having with rclone?

If I copy a file from the nas to my pc with Windows Explorer I get ~900 Mbit/s speed.

Now if I mount the same share with rclone as local drive (Y:) and try to copy the same file I get ~300 Mbit/s.
I tried it with vfs-cache-mode off, the transfer speed increased to ~600 Mbit/s but I need the cache.

I am trying to have my games saved on my nas and "stream" the files to my pc. For that I need a local cache on the pc. Without a cache this will not work unless I upgrade my NAS to SSDs and 10Gb ethernet.

What is your rclone version (output from rclone version)

rclone v1.53.4

  • os/arch: windows/amd64
  • go version: go1.15.6

Which OS you are using and how many bits (eg Windows 7, 64 bit)

Windows 10 Pro 2004

The command you were trying to run (eg rclone copy /tmp remote:tmp)

rclone mount //TRUENAS/Games Y: --vfs-cache-mode full --vfs-cache-max-age 96h --cache-dir "C:\Temp\rclone_cache" --file-perms=0777 --volname Games -v
2

hello and welcome to the forum,

the c:\, is that ssd or spinning disk?

3

C: is my 500GB sata SSD.
My nas however has hdd

4

you have tried, net use Y: \\TRUENAS\Games and that was not working well for streaming/playing the games?

5

No because some games (Blizzard) don't allow being installed to a Network Share. Also there is no caching with net use.

As I said if I access the SMB share directly I will get ~900 Mbit/s. If I go through the rclone mount I get at max 300 Mbit

6

rclone mount over samba is known to be slow.
you can search the forum about that.
Need help for slow samba share speed over share in linux - #11 by mindtripper

i did a quick internet search.
seems that some gamers use iscsi

7

I have actually read that thread, but they share an gdrive mount via SMB
I just want to mount an existing smb share and use vfs for caching. Maybe there is another solution better suited for this task?

8

One thing you could try is to point the cache directory at a RAM disk? That should help with the speed. You'll want to set --cache-dir for that and also --vfs-cache-max-size

It would be worth experimenting with the --buffer-size parameter - try making it bigger and smaller.

9

I didn't try the ramdisk as I got the expected speed via windows explorer. I tried changing the buffer size with no success. Be it 32K or 4G

10

i would think that streaming a game is about random access reads, not the same as downloading a large file from start to finish.

what actually happens when you play a game?

11

I've settled for iscsi now. Until I get a faster storage backend :slight_smile:

12

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