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Date: Mon, 27 Nov 2006 19:44:55 -0800
From: Linda Walsh <cygwin AT tlinx DOT org>
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Subject: Re: NTFS fragmentation under Cygwin & not NT/XP; redux
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Christopher Faylor wrote:
> I was hoping that this discussion about ext3 would die a natural death but
> it looks like I have to make the observation that this really has nothing
> to do with Cygwin
---
    Don't know what "cygwin" you are talking about, but the one  I
download from cygwin.com  seems to have several utils that deal with
ext2/ext3.  If  ext2/ext3 performance relative to NTFS is a verboten
discussion and has nothing to do with Cygwin, then perhaps
these utils shouldn't be in Cygwin??   

 > uname -sro
CYGWIN_NT-5.1 1.5.22(0.156/4/2) Cygwin
 > apropos ext2
debugfs          (8)  - ext2/ext3 file system debugger
dumpe2fs         (8)  - dump ext2/ext3 filesystem information
e2fsck           (8)  - check a Linux ext2/ext3 file system
e2fsck [fsck]    (8)  - check a Linux ext2/ext3 file system
e2image          (8)  - Save critical ext2/ext3 filesystem data to a file
e2label          (8)  - Change the label on an ext2/ext3 filesystem
mke2fs           (8)  - create an ext2/ext3 filesystem
mke2fs [mkfs]    (8)  - create an ext2/ext3 filesystem
resize2fs        (8)  - ext2/ext3 file system resizer
tune2fs          (8)  - adjust tunable filesystem parameters on ext2/ext3 fi
lesystems
law> apropos ext3
debugfs          (8)  - ext2/ext3 file system debugger
dumpe2fs         (8)  - dump ext2/ext3 filesystem information
e2fsck           (8)  - check a Linux ext2/ext3 file system
e2fsck [fsck]    (8)  - check a Linux ext2/ext3 file system
e2image          (8)  - Save critical ext2/ext3 filesystem data to a file
e2label          (8)  - Change the label on an ext2/ext3 filesystem
mke2fs           (8)  - create an ext2/ext3 filesystem
mke2fs [mkfs]    (8)  - create an ext2/ext3 filesystem
resize2fs        (8)  - ext2/ext3 file system resizer
tune2fs          (8)  - adjust tunable filesystem parameters on ext2/ext3 fi
lesystems
------------------
The discussion has been about NTFS and how NT-native apps handle
fragmentation compared to Cygwin.

Cygwin's performance with NTFS (both default and optimized) was being
compared to linux's allocation performance on "xfs" and "ext2(&3)".

Two responses clarifying the test conditions on ext2/3 were asked and
then you declare the whole "discussion"[sic] as having nothing to do
with Cygwin?  Perhaps not caring for the topic, you haven't been
reading it?   The discussion has everything to do with the performance
on NTFS, the underlying filesystem that cygwin recommends vs. ext2/ext3. 

As for your assertion that ext2/ext3 have nothing to do with cygwin,
the cygwin distribution contains/provides several utilities ( as
shown above) for for creating, checking, debugging, resizing,
tuning imaging, labeling and dumping ext2/ext3 file systems.

The data I processed was output from "debugfs" -- a utility that also
exists on cygwin.

How can we begin to determine how well or poorly cygwin on top of NT
does if we aren't allowed to discuss how well ext2/ext3 perform.
For whatever reasons, they are the only non-NT file systems
cygwin seems to have utilities for.

-l





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