[wp-trac] [WordPress Trac] #36534: Media Upload Issue Since 4.5 Upgrade

[WordPress Trac]

#36534: Media Upload Issue Since 4.5 Upgrade
--------------------------+------------------------
 Reporter:  unicornbacon  |       Owner:  joemcgill
     Type:  defect (bug)  |      Status:  accepted
 Priority:  normal        |   Milestone:  4.6
Component:  Media         |     Version:  4.5
 Severity:  normal        |  Resolution:
 Keywords:  has-patch     |     Focuses:
--------------------------+------------------------
Changes (by joemcgill):

 * keywords:   => has-patch
 * status:  reviewing => accepted
 * milestone:   => 4.6


Comment:

 After spending some time digging into this issue, I believe this very well
 may be related to a longstanding ImageMagick issue when multiple threads
 are available using OpenMP (see:
 https://github.com/mkoppanen/imagick#openmp). The patch in
 [attachment:36534.diff] fixes this by forcing Imagick to use a single
 thread.

 I will also add that the OpenMP issue has been an problem since before
 4.5, but version 4.5 magnifies the problem by using extra memory during
 processing.

 Can any of you experiencing this issue please try applying the patch and
 see if this resolves the issue for you?

--
Ticket URL: <https://core.trac.wordpress.org/ticket/36534#comment:10>
WordPress Trac <https://core.trac.wordpress.org/>
WordPress publishing platform