Poor upload performance with "gio copy" using cifs
a maintainer from nautilus advised me to report my issue here.
My bug report for nautilus: https://bugs.launchpad.net/ubuntu/+source/glib2.0/+bug/1782535
I've connected my desktop and my NAS via Gigabit-Ethernet and cifs mounting. While download speed is near maximum (~ 110 MB/s), the upload speed (of big files > 4 GB) is generally trash (~ 7 MB/s). The slow upload speed occurs only with some methods (e.g. Nautilus, gio copy), others are fairly good (50-110 MB/s): rsync, dd, cp.
A very odd behaviour with Nautilus/gio copy: The speed drop also depends on the file extension. ISO is always slow, copying (and not replacing!) an EXE is near maximum speed.
For further details please observe my posts on launchpad mentioned in the beginning.
My current configuration
Ubuntu 18.04.2 LTS (4.15.0-45-generic, x86_64)
cifs-fstab-entry on Desktop: //[ip-address]/home /mnt/cifs_nas_home cifs uid=florian,gid=florian,credentials=/home/florian/.smbcredentials,dir_mode=0700,vers=2.0 0 0
NAS: Synology DS214+ - DSM 6.2.1-23824 Update 4
Your default bug report list
- which version of GLib are you using?
I'm not quite sure. The default one from my OS? How do I check this without compiling?
- which operating system are you using?
s. "My current configuration"
- the necessary steps to reproduce the issue
detailed on launchpad
- the expected outcome
Upload speed at least 50 MB/s, optimal ~ 110 MB/s
- a description of the behavior
short above, detailed on launchpad
- a small, self-contained example exhibiting the behavior