Hi,

> What is /mnt/hgfs/C in this case? How is it mounted?

.host:/ on /mnt/hgfs type vmhgfs (rw,ttl=5)

I am now preparing an easy to use scandir/stat performance testing program that will perform it in various methods and printout comparison results in an easy to use manner. It will compare cygwin API (to allow us to see how cygwin1.dll changes affect performance), and various native Windows APIs - so we can see how much room there is for improvement.

I hope to be able to post this program tomorrow.

Yoni

~$ cat /etc/fstab
# /etc/fstab: static file system information.
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
proc            /proc           proc    defaults        0       0
/dev/sda1       /               ext3    errors=remount-ro 0       1
/dev/sda5       none            swap    sw              0       0
/dev/hda        /media/cdrom0   udf,iso9660 user,noauto     0       0
/dev/fd0        /media/floppy0  auto    rw,user,noauto  0       0
# Beginning of the block added by the VMware software
.host:/ /mnt/hgfs vmhgfs defaults,ttl=5 0 0
# End of the block added by the VMware software


On 22/9/2010 3:44 PM, Christopher Faylor wrote:
On Wed, Sep 22, 2010 at 07:50:14AM +0200, Yoni Londner wrote:
Hi,

I'm not exactly concerned about Linux being way faster accessing an NTFS
drive.  After all it's the OS itself and comes with it's own NTFS driver
which obviously is streamlined for typical POSIX operations.

I did not test&  compare to using the Linux NTFS, rather I compared with
Linux on VMWARE using the same Windows NTFS.SYS (via the same
kernel32.dll APIs):

Cygwin: "C:/cygwin/bin/ls.exe /bin" ->  cygwin1.dll ->  kernel32.dll ->
NTOS kernel ->  NTFS.SYS driver ->  HD

linux: "/bin/ls /mnt/hgfs/C/cygwin/bin" ->  glibc ->  linux kernel ->
VMWARE hgfs driver ->  vmware_player.exe (on Win32) ->   kernel32.dll ->
NTOS kernel ->  NTFS.SYS driver ->  HD

As you can see the VMWARE path is much longer than Cygwin, and it passes
the same APIs and NTFS.SYS driver, and yet it executes much faster.

This helps us understand that there is a lot that still can be done in
Cygwin's filesystem performance.

What is /mnt/hgfs/C in this case?  How is it mounted?

cgf

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