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[Gorka Navarrete <gorkang@xxxxxxxxx>]

Public bug reported:

Opening folders with many files takes a long time with Nautilus, to the point it becomes unusable for folders with more than 5K files. 
I've measured the time it takes for folders with different amount of files to open with Nautilus and Gnome Commander. It is ~6 times faster with GC on average. In folders with ~20K files, it takes 30s with nautilus versus 6! with GC. 

With Nautilus
~3500 files tales 6 seconds
~7000 files takes 18 seconds
~15000 files takes 22 seconds
~20000 files takes 30 seconds

With Gnome Commander
~3500 files tales <1 second
~7000 files takes 1.5 seconds
~15000 files takes 3 seconds
~20000 files takes 6 seconds

These are mostly small dicom files (MRI images). I am using a 8 core 3.4Ghz and 16Gigs of RAM with Ubuntu 11.04 64-bits.
Also, of course, things like selecting all files and copying them around is absurdly slow and makes nautilus unusable... but that would be another bug report (?).

** Affects: nautilus (Ubuntu)
     Importance: Undecided
         Status: Confirmed

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https://bugs.launchpad.net/bugs/869793

Title:
  Nautilus is very slow when opening folders with many files

Status in “nautilus” package in Ubuntu:
  Confirmed

Bug description:
  Opening folders with many files takes a long time with Nautilus, to the point it becomes unusable for folders with more than 5K files. 
  I've measured the time it takes for folders with different amount of files to open with Nautilus and Gnome Commander. It is ~6 times faster with GC on average. In folders with ~20K files, it takes 30s with nautilus versus 6! with GC. 

  With Nautilus
  ~3500 files tales 6 seconds
  ~7000 files takes 18 seconds
  ~15000 files takes 22 seconds
  ~20000 files takes 30 seconds

  With Gnome Commander
  ~3500 files tales <1 second
  ~7000 files takes 1.5 seconds
  ~15000 files takes 3 seconds
  ~20000 files takes 6 seconds

  These are mostly small dicom files (MRI images). I am using a 8 core 3.4Ghz and 16Gigs of RAM with Ubuntu 11.04 64-bits.
  Also, of course, things like selecting all files and copying them around is absurdly slow and makes nautilus unusable... but that would be another bug report (?).

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