Crypt on arm SoC too demanding?

Help and Support
1

What is the problem you are having with rclone?

Buffering on 4K files on Vero 4K+. Data throughput is limited to about 7 MB/s.
Tested with mounted crypted GDrive, cat 2160p.mkv|pv >/dev/null/ results in 7 MB/s maximum.
top shows rclone with 100% usage (one of the 4 cores to the maximum).
If I test an unencrypted file I get 10 MB/s.
rclone copy gets about 18 MB/s.

Is the CPU too slow to decode?

What is your rclone version (output from rclone version)

rclone v1.52.0

  • os/arch: linux/arm
  • go version: go1.14.3

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

OSMC on Vero 4K+ (AMLogic S905D Quad Core 1.6GHz 64-bit ARMv4 )
Linux osmc 3.14.29-158-osmc #1 SMP Thu Apr 2 18:40:24 UTC 2020 aarch64 GNU/Linux

Which cloud storage system are you using? (eg Google Drive)

Google Drive

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

/usr/bin/rclone --log-file=/home/osmc/rclone.log --log-level ERROR --config /home/osmc/.rclone.conf mount --read-only --buffer-size 256M gdrive: /home/osmc/mnt/ --dir-cache-time 60m

The rclone config contents with secrets removed.

[drive]
type = drive
client_id = REDACTED
client_secret = REDACTED
token = REDACTED
team_drive = 
root_folder_id = REDACTED

[gdrive]
type = crypt
client_id = y
client_secret = 
token = REDACTED
remote = drive:gdrive
filename_encryption = standard
password = REDACTED
password2 = REDACTED
2

hi,
as a test, have tried rclone mount drive: and try to stream 4k?
or trying removing --buffer-size

3

Wow, this is embarassing. If found the error, I installed the 32 bit version of rclone.
Everything is fine with the 64bit version.

1 Like
4

Good! I was looking at the CPU spec and thinking that looks fast enough!

5

But shouldn't get the 32bit version the same speed? What's the bottleneck then?

6

Not sure, but the 64 bit code is likely more efficient and it is likely coded better as 64 but gets more attention (maybe uses vector instructions). Also I don't think 64 bit arms run 32 bit code particularly efficiently.

7

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