Public bug reported:
Binary package hint: nautilus
Copying a large number of small files from an internal hard disk to a
USB 2.0 pendrive is very slow. Here are three proofs that the operating
system is definitely doing something wrong:
1) Copying a large number of small files is a couple of orders of magintudes
slower than copying one single file with the same total size (e.g. 1000 files
of 100kB vs 1 file of 100MB).
2) Let F be a folder containing 1000 files of 100kB in our internal hard disk.
Let's zip it into one zip file. Let's copy the zip file to the pendrive. Now we
extract it directly (from the zip on the pendrive into the pendrive).
Extracting the file is a lot faster than copying them from the internal hard
disk to the pendrive. Note that it is creating and writing exactly the same
number of files and of the same size, so if it can create and write them
(besides extracting them!) that fast, copying them from the hard disk to the
pendrive should be at the very least as fast.
If it was an issue with the hardware, unzipping would be at least as
slow as copying from the hard disk.
3) Another operating system (namely Windows) on the same machine with
the same hard disk and the same pendrive does the same 100 times faster.
ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: nautilus 1:2.30.1-0ubuntu1.1
ProcVersionSignature: Ubuntu 2.6.32-31.61-generic 2.6.32.32+drm33.14
Uname: Linux 2.6.32-31-generic i686
NonfreeKernelModules: nvidia
Architecture: i386
Date: Fri Apr 29 20:59:24 2011
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
ProcEnviron:
PATH=(custom, no user)
LANG=en_US.utf8
SHELL=/bin/bash
SourcePackage: nautilus
** Affects: nautilus (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug i386 lucid
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https://bugs.launchpad.net/bugs/773541
Title:
copying many small files to USB drive is extremely slow
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