[Bug 392204] Re: Huge CPU usage by mount.ntfs process

[Kenny Loveall]

I've recently switched over from Windows to Ubuntu (11.10) and was
pulling my hair out trying to figure out why two programs we're hanging
and being very unresponsive (Filezilla and VirtualBox). Turns out that
it was that I was running them off a NTFS partition (and therefore
having ntfs-3g taking 70-100+% of CPU as others have said).  I switched
them to run off a non-NTFS partition and the transfers in FileZilla
(when they worked) jumped from about 5KB/s total to 1,600 KB/s.

Personal anecdote aside, I agree that this bug should be listed a lot
higher than medium. For people that have recently switched from Windows
and still regularly work with files on their Windows partition it is a
huge headache when everything is slow to respond. Not to mention that
it's been known since 2009 so isn't it time we fixed it? I would try
myself but I don't know enough to even know where to start, however I
hope someone else fixes it soon!

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https://bugs.launchpad.net/bugs/392204

Title:
  Huge CPU usage by mount.ntfs process

Status in NTFS-3G:
  New
Status in “ntfs-3g” package in Ubuntu:
  Confirmed

Bug description:
  While copying files from one ntfs partition to second ntfs partition
  process 'mount.ntfs' use 42 - 49% procesor resources (probably 100% on
  one core). Second 'mount.ntfs' process use 5% procesor time. (used
  'conky' for inspection)

  / and /home on first sata disk (ext4)
  file source on the second sata (ntfs)
  file target on third sata hdd (ntfs)

  Ubuntu 9.10 Alpha 1 (up-to-date)

  Athlon 2xCore
  nvidia 570 chipset

  ProblemType: Bug
  Architecture: i386
  Date: Thu Jun 25 19:11:54 2009
  DistroRelease: Ubuntu 9.10
  ExecutablePath: /usr/bin/nautilus
  NonfreeKernelModules: nvidia
  Package: nautilus 1:2.27.2-0ubuntu1
  ProcEnviron:
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcVersionSignature: Ubuntu 2.6.30-9.10-generic
  SourcePackage: nautilus
  Uname: Linux 2.6.30-9-generic i686

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