Displaying 20 results from an estimated 10000 matches similar to: "compression of source and target files"
2013 May 07
4
[Bug 9864] New: Allow permanent compression of destination files
https://bugzilla.samba.org/show_bug.cgi?id=9864
Summary: Allow permanent compression of destination files
Product: rsync
Version: 3.1.0
Platform: All
OS/Version: All
Status: NEW
Severity: enhancement
Priority: P5
Component: core
AssignedTo: wayned at samba.org
ReportedBy: me at haravikk.com
2018 Aug 02
2
Default compression level for -compress-debug-info=zlib?
Hi Rui,
What's the intended advantage for compressing the debug sections? - (i)
Improved link time through smaller IO / (ii) Improved Load / startup time
for the debugger / (iii) Smaller exe with debug info for distribution /
disk space?
For i) and ii) how much this is worth it depends on balance of storage
bandwidth to compression (i) / decompression (ii) bandwidth. For spinning
drives it
2018 Aug 02
3
Default compression level for -compress-debug-info=zlib?
> As to (3), in most cases, I believe it is rare to distribute executables
with debug info widely
> I think it is at least less important than (1).
Agreed.
> I think (1) is definitely the case, and that's also true for a
distributed build system with which a lot of object files are copied
between machines.
> My suggestion was to use compression level 9 when both -O2 and
2018 Aug 02
3
Default compression level for -compress-debug-info=zlib?
Not really, as well as some sensitivity to the input data overall
performance of the link with compression will depend on how this is
implemented in lld - how is it parallelized? How is it chunked? Is it
effectively pipelined with IO?
Or, I wouldn't feel comfortable being able to make a recommendation to our
end-users on whether to use this option or not based on my existing
extensive
2018 Aug 02
2
Default compression level for -compress-debug-info=zlib?
Also not an expert, but would it make sense for this to be configurable at
a fine-grained level, perhaps with another option, or an extension to the
compress-debug-sections switch interface? That way users who care about the
finer details can configure it themselves. And we should pick sensible
options for the default.
James
On 2 August 2018 at 11:08, Pavel Labath via llvm-dev <
llvm-dev at
2019 Jun 25
2
About rsync over SSH and compression
Thanks; I did not think of that. I have just run a few basic tests with
both rsync and OpenSSH in their default settings, when it comes to
compression. SSH compression seems to have a very slight edge. However, I
surmise that, given the number of knobs available on both sides (OpenSSH,
in particular) one can tinker with settings almost endlessly in either
side, probably being able to end up with
2007 Feb 09
2
DO NOT REPLY [Bug 4383] New: Idea: Store files in compressed format and visa versa
https://bugzilla.samba.org/show_bug.cgi?id=4383
Summary: Idea: Store files in compressed format and visa versa
Product: rsync
Version: 3.0.0
Platform: Other
OS/Version: All
Status: NEW
Severity: normal
Priority: P3
Component: core
AssignedTo: wayned@samba.org
ReportedBy:
2009 Jun 15
33
compression at zfs filesystem creation
Hi,
I just installed 2009.06 and found that compression isn''t enabled by default when filesystems are created. Does is make sense to have an RFE open for this? (I''ll open one tonight if need be.) We keep telling people to turn on compression. Are there any situations where turning on compression doesn''t make sense, like rpool/swap? what about rpool/dump?
Thanks,
~~sa
2007 Jul 05
17
ZFS Compression algorithms - Project Proposal
Bellow, follows a proposal for a new opensolaris project. Of course,
this is open to change since I just wrote down some ideas I had months
ago, while researching the topic as a graduate student in Computer
Science, and since I''m not an opensolaris/ZFS expert at all. I would
really appreciate any suggestion or comments.
PROJECT PROPOSAL: ZFS Compression Algorithms.
The main purpose of
2006 Aug 17
7
in-kernel gzip compression
Hello zfs-discuss,
Is someone actually working on it? Or any other algorithms?
Any dates?
--
Best regards,
Robert mailto:rmilkowski at task.gda.pl
http://milek.blogspot.com
2007 Feb 14
3
DoveCot compression to save HDD space
Hello,
I am wondering if there are any possibilities to save HDD space used by
emails by compressing content (not just attachements).
It would be many 1000s email boxes and probably each using lot of space
so would be easier if we can just compress emails somehow.
Thanks,
Cristian
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2008 Nov 07
2
A couple of newbie questions about ZFS compression
I''m about to enable compression on my ZFS filesystem, as most of the data I intend to store should be highly compressible.
Before I do so, I''d like to ask a couple of newbie questions....
First - if you were running a ZFS without compression, wrote some files to it, then turned compression on, will those original uncompressed files ever get compressed via some background work,
2019 Jun 25
5
About rsync over SSH and compression
Rsync supports the capability of compressing data before sending. So does
OpenSSH. It would be probably be a waste of resources and time to enable
both compression capabilities at the same time, but it is not clear to me
whether, in general, it makes better sense to enable rsync compression or
SSH compression.
My first thought would be that SSH compression might yield better results,
on the
2012 Aug 09
0
[LLVMdev] Compressing with llvm-ar
On Thu, Aug 9, 2012 at 1:15 PM, Michael Spencer <bigcheesegs at gmail.com> wrote:
> On Thu, Aug 9, 2012 at 12:49 PM, Rafael EspĂndola
> <rafael.espindola at gmail.com> wrote:
>>> I think this is a leftover from the days we used to have a *byte*code
>>> and use bzip2 on it :-)
>>>
>>> I will try to clean it up.
>>
>> The attached
2009 Jul 30
5
PDF Compression
Hi,
I am generating a large number of graphs with pdf() and
incorporating them in pdf document using pdflatex.
According to the pdf() help:
'pdf' writes uncompressed PDF. It is primarily intended for
producing PDF graphics for inclusion in other documents, and
PDF-includers such as 'pdftex' are usually able to handle
.compression.
But pdflatex incorporates the R
2005 Feb 19
3
Low compression on high noise?
Hi List,
I noted that compressing music like Merzbow or other Japanese chaotic
noise-bands usually results in very low compression rates.
That means, that the resulting .flac-file is nearly as big as the
initial .wav-file.
Other kinds of music get compressed much better.
Any explanation?
Regards
Thomas
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2015 May 10
3
Packet compression benchmark
Hello,
Darik Horn sent a pull request adding support for LZ4. LZ4 is supposed
to be a very fast compression algorithm, especially when it comes to
decompression. I did a quick benchmark with zlib, LZO and LZ4. Now,
there are many benchmarks you can find online, but most of them deal
with compressing large files. Tinc on the other hand has to compress
small packets individually. So I did the
2012 Aug 09
2
[LLVMdev] Compressing with llvm-ar
On Thu, Aug 9, 2012 at 12:49 PM, Rafael EspĂndola
<rafael.espindola at gmail.com> wrote:
>> I think this is a leftover from the days we used to have a *byte*code
>> and use bzip2 on it :-)
>>
>> I will try to clean it up.
>
> The attached patch removes all references to compression from llvm-ar,
> llvm-ranlib and related libraries.
>
> Is it OK?
>
2009 Feb 09
2
Local transform on files before sending?
Is it possible to have rsync do a transform on each file before sending
it? This would be useful for things like individually compressed or
encrypted backups, or in my case, syncing lossy copies of my FLAC music
to an mp3 player or laptop.
If not, is there demand for such a feature? It seems like it would be of
use to many people, and in principle it shouldn't interfere with
incremental file
2003 Jun 25
5
lossless ogg encoding with good compression rate
I think that there is a very simple way to encode audio files with lossless compression around 35%.
(the compression may be improved if we can lose some lsb bits around 30% for 2 and 25% for 3)
Other lossless audio encoder I've seen reach at maximum a compression of 48% (*.flac, *.ape)
So the questions are:
1- Is someone interested in another encoder?
2- If true n.1 may it be included in ogg