NTFS write speed really slow (<15MB/s)

Posted by Zulakis on Super User See other posts from Super User or by Zulakis
Published on 2013-06-30T17:05:42Z Indexed on 2013/06/30 22:23 UTC
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ubuntu

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ntfs

I got a new Seagate 4TB harddrive formatted with ntfs using

parted /dev/sda
> mklabel gpt
> mkpart pri 1 -1
mkfs.ntfs /dev/sda1

When copying files or testing writespeed with dd, the max writespeed I can get is about 12MB/s. The harddrive should be capable of atleast 100MB/s.

top shows high cpu usage for the mount.ntfs process. The system has a AMD dualcore.

This is the output of parted /dev/sda unit s print:

Model: ATA ST4000DM000-1F21 (scsi)
Disk /dev/sda: 7814037168s
Sector size (logical/physical): 512B/4096B
Partition Table: gpt

Number  Start  End          Size         File system  Name  Flags
 1      2048s  7814035455s  7814033408s               pri

The used kernel is 3.5.0-23-generic.

The ntfs-3g versions I tried are ntfs-3g 2012.1.15AR.1 (ubuntu 12.04 default) and the newest version ntfs-3g 2013.1.13AR.2. When formatted with ext4 I get good write speeds with about 140MB/s.

How can I fix the writespeed?

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