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File copy slow with zfs destination (cp 3x faster)
Status:
RESOLVED: WONTFIX

Comments

Description Greg 2015-05-03 19:22:43 CEST
Created attachment 6231 
trace

Copying a file from a ramdrive to a zfs filesystem has a max transfer rate around 220MB/s.  Copying this same file/directory using cp, the max transfer rate is around 800MB/s.  Attached is the thunar trace of the copy

System information
AMD 8120, 32 GB RAM, ZFS kernel module (0.6.4+) kernel 3.17.4 on Fedora 21.  The destination is an Intel 750 Series ssd (max write 1000+ MB/s)
Comment 1 Harald Judt editbugs 2015-05-04 12:07:00 CEST
Does it work fast when you close the thunar windows while copying?
Comment 2 Greg 2015-05-04 15:34:07 CEST
Unfortunately no difference when all thunar windows are closed.  I also killed the daemon and spawned a single instance, same result
Comment 3 Harald Judt editbugs 2015-05-04 15:43:09 CEST
Then I suspect either gio/gvfs is slow with copying, or it is some other part of the code which makes this slow. Can't help you with that, but the code works, so I am closing this. Feel free to reopen this if you have any idea what could be wrong.

Bug #11883

Reported by:
Greg
Reported on: 2015-05-03
Last modified on: 2015-05-04

People

Assignee:
Xfce Bug Triage
CC List:
2 users

Version

Version:
unspecified

Attachments

trace (934.19 KB, application/octet-stream)
2015-05-03 19:22 CEST , Greg
no flags

Additional information