file transfer in nautilus slows grossly over a couple of minutes

Bug #1665501 reported by Graham Bartlett on 2017-02-17
This bug affects 2 people
Affects Status Importance Assigned to Milestone
nautilus (Ubuntu)

Bug Description

I have found that kswapd0 is running at 100%. If i run ' echo 3 > /proc/sys/vm/drop_caches' the transfer of data improves but not to initial levels. If that is not done more than a few times the system eventually grinds to a halt and reboot is required. The file transfer is usually between external usb drives. Beginning of xfer speeds are usually 17 - 20 mbit but will slow to less than 1mbit. This hasn't previously been a problem but i have tried rebooting with 3 or 4 older kernels and same problem exists. Older kernels wont start for some reason ! That timing coincides with a new graphics board i installed. Not relevant to the issue but may explain earlier than .30 kernels not allowing me to login ! As it is the system is unusable for any major file transfers. I have been patching all relevant patches on to my system which is running 16.10
root@GrahamsPC:~# apt-cache policy nautilus
  Installed: 1:3.20.3-1ubuntu3.1
  Candidate: 1:3.20.3-1ubuntu3.1
  Version table:
 *** 1:3.20.3-1ubuntu3.1 500
        500 yakkety-updates/main i386 Packages
        100 /var/lib/dpkg/status
     1:3.20.3-1ubuntu3 500
        500 yakkety/main i386 Packages

ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: nautilus 1:3.20.3-1ubuntu3.1
ProcVersionSignature: Ubuntu 4.8.0-37.39-generic 4.8.16
Uname: Linux 4.8.0-37-generic i686
NonfreeKernelModules: nvidia_uvm nvidia
ApportVersion: 2.20.3-0ubuntu8.2
Architecture: i386
Date: Fri Feb 17 11:46:41 2017
GsettingsChanges: b'org.gnome.nautilus.window-state' b'geometry' b"'890x548+224+414'"
InstallationDate: Installed on 2016-07-12 (219 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release i386 (20140417)
SourcePackage: nautilus
UpgradeStatus: Upgraded to yakkety on 2016-10-14 (125 days ago)
usr_lib_nautilus: gnome-terminal 3.20.2-1ubuntu5

Graham Bartlett (graham45-k) wrote :
Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in nautilus (Ubuntu):
status: New → Confirmed
Tuomo Sipola (tuomosipola) wrote :

During file transfer kswapd0 starts using CPU a lot. This happens on 4.8 kernel but not on 4.4.

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