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

[Lena Wildervanck]

Hi, I also encountered this bug.

However, it started fast, and got slower when the file got bigger.

Maybe it's a n^2 bug?

I included the statistics in rates.tsv.

** Attachment added: "statistics of gddrescue, with a folder on the NTFS disk as the current working directory, slightly formatted for easy analysing."
   https://bugs.launchpad.net/ubuntu/+source/ntfs-3g/+bug/392204/+attachment/5564498/+files/rates.tsv

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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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