Am Sat, 07 Apr 2012 21:45:04 +0200
schrieb Jay Norwood j...@prismnet.com:
So ... it looks like the defrag helps, as the 109 sec values are
at the low end of the range I've seen previously. Still it is
totally surprising to me that deleting files should take longer
than creating the same
On Sunday, 8 April 2012 at 13:55:21 UTC, Marco Leise wrote:
Maybe the kernel caches writes, but synchronizes deletes? (So
the seek times become apparent there, and not in the writes)
Also check the file creation flags, maybe you can hint Windows
to the final file size and they wont be
On Saturday, 7 April 2012 at 05:02:04 UTC, dennis luehring wrote:
7zip took 55 secs _on the same file_.
that is ok but he still compares different implementations
7zip is the program. It unzips many formats, with the standard
zip format being one of them. The parallel d program is three
On 4/7/2012 12:32 AM, Jay Norwood wrote:
I got procmon to see what is going on. Win7 has doing indexing and
thumbnails, and there was some virus checker going on, but you can get
rid of those. Still, most of the problem just boils down to the duration
of the delete on close being proportional
On Saturday, 7 April 2012 at 11:41:41 UTC, Rainer Schuetze wrote:
Maybe it is the trim command being executed on the sectors
previously occupied by the file.
No, perhaps I didn't make it clear that the rmdir slowness is
only an issue on hard drives. I can unzip the 2GB archive in
about
On Saturday, 7 April 2012 at 17:08:33 UTC, Jay Norwood wrote:
The mydefrag program uses the ntfs defrag api. There is an
article at the following link showing how to access it to get
the Logical Cluster Numbers on disk for a file. I suppose you
could sort your file operations by start LCN,
On 4/5/2012 6:53 PM, Jay Norwood wrote:
I'm curious why win7 is such a dog when removing directories. I see a
lot of disk read activity going on which seems to dominate the delete
time. This doesn't make any sense to me unless there is some file
caching being triggered on files being
On Friday, 6 April 2012 at 14:55:14 UTC, Sean Cavanaugh wrote:
If you delete a directory containing several hundred thousand
directories (each with 4-5 files inside, don't ask), you can
see windows freeze for long periods (10+seconds) of time until
it is finished, which affects everything up
Am 05.04.2012 19:04, schrieb Timon Gehr:
On 04/05/2012 06:37 PM, dennis luehring wrote:
Am 05.04.2012 16:04, schrieb Jay Norwood:
I uploaded a parallel unzip here, and the main in the examples
folder. Testing on my ssd drive, unzips a 2GB directory
structure in 17.5 secs. 7zip took 55 secs
Am 06.04.2012 01:53, schrieb Jay Norwood:
I'm curious why win7 is such a dog when removing directories. I
see a lot of disk read activity going on which seems to dominate
the delete time.
try windows safe-mode (without network :} - your virus scanner is
disabled), press F8 before windows
On Thursday, 5 April 2012 at 14:04:57 UTC, Jay Norwood wrote:
I uploaded a parallel unzip here, and the main in the examples
folder.
So, below is a demo of how to use the example app in windows,
where I unzipped a 2GB directory structure from a 1GB zip file,
tzip.zip.
02/18/2012 03:23 PM
On Thursday, 5 April 2012 at 15:07:47 UTC, Jay Norwood wrote:
so, a few comments about std.zip...
I attempted to use it and found that its way of unzipping is a
memory hog, keeping the full original and all the unzipped data
in memory. It quickly ran out of memory on my test case.
Am 05.04.2012 16:04, schrieb Jay Norwood:
I uploaded a parallel unzip here, and the main in the examples
folder. Testing on my ssd drive, unzips a 2GB directory
structure in 17.5 secs. 7zip took 55 secs on the same file.
it makes no sense to benchmark different algorithm zip-7zip
compare
On 04/05/2012 06:37 PM, dennis luehring wrote:
Am 05.04.2012 16:04, schrieb Jay Norwood:
I uploaded a parallel unzip here, and the main in the examples
folder. Testing on my ssd drive, unzips a 2GB directory
structure in 17.5 secs. 7zip took 55 secs on the same file.
it makes no sense to
I think he is talking about 7zip the standalone software, not
7zip the compression algorithm.
7zip took 55 secs _on the same file_.
Yes, that's right, both 7zip and this uzp program are using the
same deflate standard format of zip for this test. It is the
only expand format that is
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