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

[Edward]

Had a similar problem - mount.ntfs-3g process uses up to 80% of CPU. 
Finally found the reason - large files (40GB). 
mount.ntfs has a special option to support large files -  big_writes. 
I updated my  /etc/fstab configuration file and it works now! 
CPU load variates from 0 to 45%, but not constant 80% anymore. 

Example of /etc/fstab file:

/dev/sda1 /media/USBHDD1        ntfs    noatime,big_writes   0    0

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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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