The output of sudo strace -T -p {pid} is:
restart_syscall(<... resuming interrupted poll ...>)
when it use 100% CPU. Hope this can help.
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https://bugs.launchpad.net/bugs/1409032
Title:
gvfsd-smb: very high CPU utilisation
Status in gvfs package in Ubuntu:
Confirmed
Status in samba package in Ubuntu:
Confirmed
Status in samba package in Fedora:
Unknown
Bug description:
Example:
I use Virtualbox and mount a .vdi on an SMB server. Using gvfsd-smb
(browsing within Gnome to find the share), gvfsd-smb uses up to 50%
CPU which slows down the entire system when accessing the network
share. Mounting using sudo ($ sudo mount -t smbfs -o
guest,nounix,noperm //server/share /media/share) so that cifs is used
uses around 8% CPU. The difference is dramatic!
If I didn't have sudo access my machine would grind to a halt when
trying to use the remote share.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: gvfs-backends 1.12.1-0ubuntu1.2
ProcVersionSignature: Ubuntu 3.11.0-26.45~precise1-generic 3.11.10.12
Uname: Linux 3.11.0-26-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu17.8
Architecture: i386
Date: Fri Jan 9 14:32:20 2015
MarkForUpload: True
ProcEnviron:
LANGUAGE=en_GB:en
TERM=xterm
PATH=(custom, no user)
LANG=en_GB.UTF-8
SHELL=/bin/bash
SourcePackage: gvfs
UpgradeStatus: Upgraded to precise on 2014-12-07 (33 days ago)
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