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From: Eric Biggers <ebiggers@kernel.org>
To: Szabolcs Szakacsits <szaka@tuxera.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
	Theodore Ts'o <tytso@mit.edu>,
	Matthew Wilcox <willy@infradead.org>,
	"Leonidas P. Papadakos" <papadakospan@gmail.com>,
	Konstantin Komarov <almaz.alexandrovich@paragon-software.com>,
	zajec5@gmail.com, "Darrick J. Wong" <djwong@kernel.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Hans de Goede <hdegoede@redhat.com>,
	linux-fsdevel <linux-fsdevel@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Al Viro <viro@zeniv.linux.org.uk>,
	Miklos Szeredi <miklos@szeredi.hu>
Subject: Re: NTFS testing (was: [GIT PULL] vboxsf fixes for 5.14-1
Date: Fri, 3 Sep 2021 10:48:18 -0700	[thread overview]
Message-ID: <YTJf4lBjnliqhI4D@sol.localdomain> (raw)
In-Reply-To: <alpine.DEB.2.20.2109030047330.23375@tuxera.com>

On Fri, Sep 03, 2021 at 01:09:40AM +0300, Szabolcs Szakacsits wrote:
> User space drivers can have major disadvantages for certain workloads 
> however how relevant are those for NTFS users? Most people use NTFS for 
> file transfers in which case ntfs-3g read and write speed is about 15-20% 
> less compared to ext4. For example in some quick tests ext4 read was 
> 3.4 GB/s versus ntfs-3g 2.8 GB/s, and write was 1.3 GB/s versus 1.1 GB/s.

Your company's own advertising materials promoting your proprietary NTFS driver
(https://www.tuxera.com/products/tuxera-ntfs-embedded) claim that NTFS-3G is
much slower than ext4:

	Read:
		NTFS-3G: 63.4 MB/s
		ext4: 113.8 MB/s
		"Microsoft NTFS by Tuxera": 116 MB/s

	Write:
		NTFS-3G: 16.3 MB/s
		ext4: 92.4 MB/s
		"Microsoft NTFS by Tuxera": 113.3 MB/s

I'm not sure why anything you say should have any credibility when it
contradicts what your company says elsewhere, and your company has a vested
interest in not having proper NTFS support upstreamed to compete with their
proprietary driver.  (Note that Tuxera doesn't provide much support for NTFS-3G;
most of their efforts are focused on their proprietary driver.)

- Eric

  reply	other threads:[~2021-09-03 17:48 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-13 10:45 [GIT PULL] vboxsf fixes for 5.14-1 Hans de Goede
2021-07-13 19:15 ` Linus Torvalds
2021-07-13 20:14   ` Al Viro
2021-07-13 20:18     ` Al Viro
2021-07-13 20:24       ` Randy Dunlap
2021-07-13 20:32         ` Al Viro
2021-07-13 21:43           ` Randy Dunlap
2021-07-14 10:50     ` Rafał Miłecki
2021-07-14 14:13       ` Christoph Hellwig
2021-07-14 14:51       ` Greg KH
2021-07-14 15:59         ` Rafał Miłecki
2021-07-14 16:05           ` Matthew Wilcox
2021-07-14 16:18             ` Rafał Miłecki
2021-07-15 21:50               ` Neal Gompa
2021-07-16 11:46               ` Leonidas P. Papadakos
2021-07-16 18:07                 ` Linus Torvalds
2021-07-30 15:55                   ` Konstantin Komarov
2021-07-30 17:23                     ` Paragon NTFSv3 (was Re: [GIT PULL] vboxsf fixes for 5.14-1) Linus Torvalds
2021-08-13 16:11                       ` Konstantin Komarov
2021-08-15 20:32                         ` Stephen Rothwell
2021-08-16  3:00                         ` Kari Argillander
2021-09-02 21:55                       ` Linus Torvalds
2021-08-03 22:48                   ` [GIT PULL] vboxsf fixes for 5.14-1 Theodore Ts'o
2021-08-03 23:44                     ` Matthew Wilcox
2021-08-04  0:04                       ` Theodore Ts'o
2021-08-04  0:10                         ` Linus Torvalds
2021-08-04  0:49                           ` Theodore Ts'o
2021-08-04  1:03                             ` Darrick J. Wong
2021-08-04  6:38                               ` Kari Argillander
2021-08-04 16:30                                 ` Theodore Ts'o
2021-08-05 15:48                               ` Konstantin Komarov
2021-08-10  7:02                                 ` Darrick J. Wong
2021-09-02 22:09                           ` NTFS testing (was: " Szabolcs Szakacsits
2021-09-03 17:48                             ` Eric Biggers [this message]
2021-09-03 21:17                               ` Szabolcs Szakacsits
2021-07-17 16:47                 ` Pali Rohár
2021-07-14 16:13           ` Darrick J. Wong
2021-07-14 16:18             ` Christoph Hellwig
2021-07-14 16:38               ` Gao Xiang
2021-07-14 20:03               ` Eric W. Biederman
2021-07-15 22:14               ` Darrick J. Wong
2021-07-13 19:17 ` pr-tracker-bot

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