I find it strange...
When I upgraded from 14.04 to 16.04 - DT was at version 2.0.5 and nvidia
361. I actually experienced speed "gain" - did not clock it but it was
very noticeable. I worked in this state for several weeks - all happy,
no changes in settings to DT.
2.0.6 was installed on 2016-09-06. I noticed it works but did not test
any further. Then I didn't use the computer till 11th. Installed the
following updates
2016-09-11 19:56:16 status installed gnome-menus:amd64 3.13.3-6ubuntu3.1
2016-09-11 19:56:16 status installed desktop-file-utils:amd64 0.22-1ubuntu5
2016-09-11 19:56:17 status installed mime-support:all 3.59ubuntu1
2016-09-11 19:56:17 status installed bamfdaemon:amd64
0.5.3~bzr0+16.04.20160701-0ubuntu1
2016-09-11 19:56:17 status installed man-db:amd64 2.7.5-1
2016-09-11 19:56:18 status installed libc-bin:amd64 2.23-0ubuntu3
2016-09-11 19:56:18 status installed dbus:amd64 1.10.6-1ubuntu3
2016-09-11 19:56:18 status installed gconf2:amd64 3.2.6-3ubuntu6
2016-09-11 19:56:18 status installed hicolor-icon-theme:all 0.15-0ubuntu1
2016-09-11 19:56:18 status installed libglib2.0-0:i386
2.48.1-1~ubuntu16.04.1
2016-09-11 19:56:18 status installed libglib2.0-0:amd64
2.48.1-1~ubuntu16.04.1
2016-09-11 19:56:18 status installed sgml-base:all 1.26+nmu4ubuntu1
2016-09-11 19:56:19 status installed google-chrome-stable:amd64
53.0.2785.101-1
2016-09-11 19:56:19 status installed libp11-kit0:amd64
0.23.2-5~ubuntu16.04.1
2016-09-11 19:56:19 status installed libp11-kit0:i386 0.23.2-5~ubuntu16.04.1
2016-09-11 19:56:19 status installed p11-kit-modules:amd64
0.23.2-5~ubuntu16.04.1
2016-09-11 19:56:19 status installed libaccountsservice0:amd64
0.6.40-2ubuntu11.2
2016-09-11 19:56:19 status installed accountsservice:amd64
0.6.40-2ubuntu11.2
2016-09-11 19:56:19 status installed file-roller:amd64 3.16.5-0ubuntu1.2
2016-09-11 19:56:19 status installed gnome-font-viewer:amd64 3.16.2-1ubuntu1
2016-09-11 19:56:19 status installed libappstream-glib8:amd64
0.5.13-1ubuntu3
2016-09-11 19:56:19 status installed libimlib2:amd64 1.4.7-1ubuntu0.1
2016-09-11 19:56:19 status installed metacity-common:all 1:3.18.7-0ubuntu0.1
2016-09-11 19:56:19 status installed libmetacity-private3a:amd64
1:3.18.7-0ubuntu0.1
2016-09-11 19:56:19 status installed libnm-gtk-common:all
1.2.0-0ubuntu0.16.04.4
2016-09-11 19:56:19 status installed libnm-gtk0:amd64 1.2.0-0ubuntu0.16.04.4
2016-09-11 19:56:19 status installed libnma-common:all
1.2.0-0ubuntu0.16.04.4
2016-09-11 19:56:19 status installed libnma0:amd64 1.2.0-0ubuntu0.16.04.4
2016-09-11 19:56:19 status installed network-manager-gnome:amd64
1.2.0-0ubuntu0.16.04.4
2016-09-11 19:56:21 status installed snapd:amd64 2.14.2~16.04
2016-09-11 19:56:21 status installed p11-kit:amd64 0.23.2-5~ubuntu16.04.1
2016-09-11 19:56:21 status installed libc-bin:amd64 2.23-0ubuntu3
and noticed drop in performance - mainly when using darktable (not much
light table). Took a chance to turn off open CL and the performance
improved. After reading the thread
https://www.mail-archive.com/darktable-dev@lists.darktable.org/msg01176.html
Tried to compare with export of a single image.
without open CL - 23s for about 20 MB RAW.
Same image - no change
with open CL - 41s
The OS and the images are stored on SSD so the networking does not come
into play.
I can work without open CL - it is not a deal breaker but the behavior
is surprising.
Regards,
B
On 2016-09-13 03:04 AM, Jonathan Niehof wrote:
There was a thread on the -dev list with someone else having slowness
on Ubuntu 16.04 with OpenCL on nVidia and it looked like a driver
issue. They switched from version 361 of the nVidia driver to 340 and
saw an improvement, might be worth trying.
Thread here:
https://www.mail-archive.com/darktable-dev@lists.darktable.org/msg01176.html
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