I was testing shell search providers, and checking if they work or not, also if there are any messages in journal/log.

This looks like some debug/statistics, and if it is, it probably should be disabled in final release, or packaged gnome-software for the end user.

gnome-software-3.14.0-1.fc21.x86_64



gnome-session[1683]: (org.gnome.Software:2009): Gs-WARNING **: Not already a started task for 0x10b8400~packagekit-refine::transaction
gnome-session[1683]: #                                                                                      @0108ms GsPlugin::setup 108ms
gnome-session[1683]: # @2897116ms 0x10d28a0~GsPlugin::epiphany(gs_plugin_add_search) 75ms
gnome-session[1683]: # @2898033ms 0x10d28a0~GsPlugin::appstream(gs_plugin_add_search) 917ms
gnome-session[1683]: # @2898033ms 0x10d28a0~appstream::startup 917ms
gnome-session[1683]: # @2898387ms 0x10b8400~GsPlugin::appstream(gs_plugin_add_search) 517ms
gnome-session[1683]: # @2898387ms 0x10b8400~appstream::search 353ms
gnome-session[1683]: # @2898187ms 0x10d28a0~GsPlugin::moduleset(gs_plugin_add_search;gs_plugin_refine) 153ms
gnome-session[1683]: # @2898187ms 0x10d28a0~moduleset::startup 153ms
gnome-session[1683]: # @2898763ms 0x10b8400~GsPlugin::packagekit-refine(gs_plugin_add_search;gs_plugin_refine) 371ms
gnome-session[1683]: # @2898765ms 0x10d28a0~GsPlugin::appstream(gs_plugin_add_search) 14ms
gnome-session[1683]: # @2898765ms 0x10d28a0~appstream::search 14ms
gnome-session[1683]: # @2898975ms 0x10d28a0~GsPlugin::packagekit-refine(gs_plugin_add_search;gs_plugin_refine) 207ms
gnome-session[1683]: # @2898975ms 0x10d28a0~packagekit-refine[name->id] 207ms
gnome-session[1683]: # @2898974ms 0x10d28a0~packagekit-refine::transaction 133ms
gnome-session[1683]: $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ @????ms GsMain 2899382ms
gnome-session[1683]: $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ @????ms GsPluginLoader 2899145ms
gnome-session[1683]: $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ @????ms 0x10b8400~packagekit-refine[name->id] 754ms
gnome-session[1683]: $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ @????ms 0x10b8400~GsPlugin::packagekit-refine(gs_plugin_add_search;gs_plugin_refine) 15ms
gnome-session[1683]: (org.gnome.Software:2009): Gs-WARNING **: Already a started task for 0x10b8400~packagekit-refine[name->id]