Rclone cache speed (test with Disk Speed Test by Blackmagic)

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Looking at your log all the io is still being done in 4k chunks.

not sure, but this is probably due to the fact the Blackmagic Speedtest is stressing the disk writing/reading small files of that size.

I made the following tests, hoping I got well your suggestions:

 ~/ rclone mount ~/Desktop/tmp magnum --volname magnum -o iosize=131072 --log-level=DEBUG --log-file=rclone155beta-local-iosize-131072.log
 ~/ rclone mount ~/Desktop/tmp magnum --volname magnum -o iosize=16777216 --log-level=DEBUG --log-file=rclone155beta-local-iosize-16777216.log
 ~/ rclone mount ~/Desktop/tmp magnum --volname magnum -o iosize=8388608 --log-level=DEBUG --log-file=rclone155beta-local-iosize-8388608.log
 ~/ rclone mount ~/Desktop/tmp magnum --volname magnum --max-read-ahead 4k --log-level=DEBUG --log-file=rclone155beta-local-max-read-ahead-4k.log
 ~/ rclone mount ~/Desktop/tmp magnum --volname magnum --max-read-ahead 128k --log-level=DEBUG --log-file=rclone155beta-local-max-read-ahead-128k.log 
 ~/ rclone mount ~/Desktop/tmp magnum --volname magnum  --log-level=DEBUG --log-file=rclone155beta-local-tranfer-huge-file.log

I wanted to do a different test then try to move a folder on the mounted folder it took around 4 minutes to move it:

 ~/ rclone mount ~/Desktop/tmp magnum --volname magnum --vfs-cache-mode full --log-level=DEBUG --log-file=rclone155beta-local-huge-file.log

Screenshot 2021-03-24 at 12.14.38
Screenshot 2021-03-24 at 12.14.38426×102 15.4 KB

The same folder moved directly on the Desktop/Tmp in less than 1minute:

Screenshot 2021-03-24 at 12.20.10
Screenshot 2021-03-24 at 12.20.10426×100 16.1 KB

Here the folder with all the logs above if you want to check (the last one is ~700MB). The chunk size is still 4096.

https://drive.google.com/file/d/1BR4T5oF-wDNkmpzTRenaRt0lKFWVOLlW/view?usp=sharing
https://drive.google.com/file/d/1gGOMnTYDMWi876qjsGMukeGWGr8QsFAy/view?usp=sharing
https://drive.google.com/file/d/10AxjamZvY9mExAxnItuUnttvNknnaidR/view?usp=sharing
https://drive.google.com/file/d/1TJZv02IHAG9wuC15cS8jll3jtkQT21Jh/view?usp=sharing
https://drive.google.com/file/d/1cAttdMNOS_iK7VChlqnQsbH2Orfh43CD/view?usp=sharing

and the huge folder moving log:

https://drive.google.com/file/d/1F-iLRRbRe6iWCc-5ilcWsoBH8Y3Z_Gyn/view?usp=sharing

Thanks,
Fabio